Adding upstream version 1:10.5.12.upstream/1%10.5.12upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 5828 insertions, 0 deletions

diff --git a/sql/item_create.cc b/sql/item_create.cc
new file mode 100644
index 00000000..8850688f
--- /dev/null
+++ b/sql/item_create.cc
@@ -0,0 +1,5828 @@
+/*
+   Copyright (c) 2000, 2011, Oracle and/or its affiliates.
+   Copyright (c) 2008, 2021, MariaDB Corporation.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 of the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335  USA */
+
+/**
+  @file
+
+  @brief
+  Functions to create an item. Used by sql_yac.yy
+*/
+
+#include "mariadb.h"
+#include "sql_priv.h"
+/*
+  It is necessary to include set_var.h instead of item.h because there
+  are dependencies on include order for set_var.h and item.h. This
+  will be resolved later.
+*/
+#include "sql_class.h"                          // set_var.h: THD
+#include "set_var.h"
+#include "sp_head.h"
+#include "sp.h"
+#include "sql_time.h"
+#include "sql_type_geom.h"
+#include <mysql/plugin_function.h>
+
+
+extern "C" uchar*
+get_native_fct_hash_key(const uchar *buff, size_t *length,
+                        my_bool /* unused */)
+{
+  Native_func_registry *func= (Native_func_registry*) buff;
+  *length= func->name.length;
+  return (uchar*) func->name.str;
+}
+
+
+bool Native_func_registry_array::append_to_hash(HASH *hash) const
+{
+  DBUG_ENTER("Native_func_registry_array::append_to_hash");
+  for (size_t i= 0; i < count(); i++)
+  {
+    const Native_func_registry &func= element(i);
+    DBUG_ASSERT(func.builder != NULL);
+    if (my_hash_insert(hash, (uchar*) &func))
+      DBUG_RETURN(true);
+  }
+  DBUG_RETURN(false);
+}
+
+
+#ifdef HAVE_SPATIAL
+extern Native_func_registry_array native_func_registry_array_geom;
+#endif
+
+
+/*
+=============================================================================
+  LOCAL DECLARATIONS
+=============================================================================
+*/
+
+/**
+  Function builder for Stored Functions.
+*/
+
+class Create_sp_func : public Create_qfunc
+{
+public:
+  virtual Item *create_with_db(THD *thd, LEX_CSTRING *db, LEX_CSTRING *name,
+                               bool use_explicit_name, List<Item> *item_list);
+
+  static Create_sp_func s_singleton;
+
+protected:
+  /** Constructor. */
+  Create_sp_func() {}
+  /** Destructor. */
+  virtual ~Create_sp_func() {}
+};
+
+
+/*
+  Concrete functions builders (native functions).
+  Please keep this list sorted in alphabetical order,
+  it helps to compare code between versions, and helps with merges conflicts.
+*/
+
+class Create_func_abs : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_abs s_singleton;
+
+protected:
+  Create_func_abs() {}
+  virtual ~Create_func_abs() {}
+};
+
+
+class Create_func_acos : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_acos s_singleton;
+
+protected:
+  Create_func_acos() {}
+  virtual ~Create_func_acos() {}
+};
+
+
+class Create_func_addtime : public Create_func_arg2
+{
+public:
+  virtual Item *create_2_arg(THD *thd, Item *arg1, Item *arg2);
+
+  static Create_func_addtime s_singleton;
+
+protected:
+  Create_func_addtime() {}
+  virtual ~Create_func_addtime() {}
+};
+
+
+class Create_func_aes_encrypt : public Create_func_arg2
+{
+public:
+  virtual Item *create_2_arg(THD *thd, Item *arg1, Item *arg2);
+
+  static Create_func_aes_encrypt s_singleton;
+
+protected:
+  Create_func_aes_encrypt() {}
+  virtual ~Create_func_aes_encrypt() {}
+};
+
+
+class Create_func_aes_decrypt : public Create_func_arg2
+{
+public:
+  virtual Item *create_2_arg(THD *thd, Item *arg1, Item *arg2);
+
+  static Create_func_aes_decrypt s_singleton;
+
+protected:
+  Create_func_aes_decrypt() {}
+  virtual ~Create_func_aes_decrypt() {}
+};
+
+
+class Create_func_asin : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_asin s_singleton;
+
+protected:
+  Create_func_asin() {}
+  virtual ~Create_func_asin() {}
+};
+
+
+class Create_func_atan : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_atan s_singleton;
+
+protected:
+  Create_func_atan() {}
+  virtual ~Create_func_atan() {}
+};
+
+
+class Create_func_benchmark : public Create_func_arg2
+{
+public:
+  virtual Item *create_2_arg(THD *thd, Item *arg1, Item *arg2);
+
+  static Create_func_benchmark s_singleton;
+
+protected:
+  Create_func_benchmark() {}
+  virtual ~Create_func_benchmark() {}
+};
+
+
+class Create_func_bin : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_bin s_singleton;
+
+protected:
+  Create_func_bin() {}
+  virtual ~Create_func_bin() {}
+};
+
+
+class Create_func_binlog_gtid_pos : public Create_func_arg2
+{
+public:
+  virtual Item *create_2_arg(THD *thd, Item *arg1, Item *arg2);
+
+  static Create_func_binlog_gtid_pos s_singleton;
+
+protected:
+  Create_func_binlog_gtid_pos() {}
+  virtual ~Create_func_binlog_gtid_pos() {}
+};
+
+
+class Create_func_bit_count : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_bit_count s_singleton;
+
+protected:
+  Create_func_bit_count() {}
+  virtual ~Create_func_bit_count() {}
+};
+
+
+class Create_func_bit_length : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_bit_length s_singleton;
+
+protected:
+  Create_func_bit_length() {}
+  virtual ~Create_func_bit_length() {}
+};
+
+
+class Create_func_ceiling : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_ceiling s_singleton;
+
+protected:
+  Create_func_ceiling() {}
+  virtual ~Create_func_ceiling() {}
+};
+
+
+class Create_func_chr : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_chr s_singleton;
+
+protected:
+  Create_func_chr() {}
+  virtual ~Create_func_chr() {}
+};
+
+
+class Create_func_char_length : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_char_length s_singleton;
+
+protected:
+  Create_func_char_length() {}
+  virtual ~Create_func_char_length() {}
+};
+
+
+class Create_func_coercibility : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_coercibility s_singleton;
+
+protected:
+  Create_func_coercibility() {}
+  virtual ~Create_func_coercibility() {}
+};
+
+class Create_func_dyncol_check : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_dyncol_check s_singleton;
+
+protected:
+  Create_func_dyncol_check() {}
+  virtual ~Create_func_dyncol_check() {}
+};
+
+class Create_func_dyncol_exists : public Create_func_arg2
+{
+public:
+  virtual Item *create_2_arg(THD *thd, Item *arg1, Item *arg2);
+
+  static Create_func_dyncol_exists s_singleton;
+
+protected:
+  Create_func_dyncol_exists() {}
+  virtual ~Create_func_dyncol_exists() {}
+};
+
+class Create_func_dyncol_list : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_dyncol_list s_singleton;
+
+protected:
+  Create_func_dyncol_list() {}
+  virtual ~Create_func_dyncol_list() {}
+};
+
+class Create_func_dyncol_json : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_dyncol_json s_singleton;
+
+protected:
+  Create_func_dyncol_json() {}
+  virtual ~Create_func_dyncol_json() {}
+};
+
+
+class Create_func_compress : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_compress s_singleton;
+
+protected:
+  Create_func_compress() {}
+  virtual ~Create_func_compress() {}
+};
+
+
+class Create_func_concat : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_concat s_singleton;
+
+protected:
+  Create_func_concat() {}
+  virtual ~Create_func_concat() {}
+};
+
+
+class Create_func_concat_operator_oracle : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_concat_operator_oracle s_singleton;
+
+protected:
+  Create_func_concat_operator_oracle() {}
+  virtual ~Create_func_concat_operator_oracle() {}
+};
+
+
+class Create_func_decode_histogram : public Create_func_arg2
+{
+public:
+  Item *create_2_arg(THD *thd, Item *arg1, Item *arg2);
+
+  static Create_func_decode_histogram s_singleton;
+
+protected:
+  Create_func_decode_histogram() {}
+  virtual ~Create_func_decode_histogram() {}
+};
+
+
+class Create_func_decode_oracle : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_decode_oracle s_singleton;
+
+protected:
+  Create_func_decode_oracle() {}
+  virtual ~Create_func_decode_oracle() {}
+};
+
+
+class Create_func_concat_ws : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_concat_ws s_singleton;
+
+protected:
+  Create_func_concat_ws() {}
+  virtual ~Create_func_concat_ws() {}
+};
+
+
+class Create_func_connection_id : public Create_func_arg0
+{
+public:
+  virtual Item *create_builder(THD *thd);
+
+  static Create_func_connection_id s_singleton;
+
+protected:
+  Create_func_connection_id() {}
+  virtual ~Create_func_connection_id() {}
+};
+
+
+class Create_func_nvl2 : public Create_func_arg3
+{
+public:
+  virtual Item *create_3_arg(THD *thd, Item *arg1, Item *arg2, Item *arg3);
+
+  static Create_func_nvl2 s_singleton;
+
+protected:
+  Create_func_nvl2() {}
+  virtual ~Create_func_nvl2() {}
+};
+
+
+class Create_func_conv : public Create_func_arg3
+{
+public:
+  virtual Item *create_3_arg(THD *thd, Item *arg1, Item *arg2, Item *arg3);
+
+  static Create_func_conv s_singleton;
+
+protected:
+  Create_func_conv() {}
+  virtual ~Create_func_conv() {}
+};
+
+
+class Create_func_convert_tz : public Create_func_arg3
+{
+public:
+  virtual Item *create_3_arg(THD *thd, Item *arg1, Item *arg2, Item *arg3);
+
+  static Create_func_convert_tz s_singleton;
+
+protected:
+  Create_func_convert_tz() {}
+  virtual ~Create_func_convert_tz() {}
+};
+
+
+class Create_func_cos : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_cos s_singleton;
+
+protected:
+  Create_func_cos() {}
+  virtual ~Create_func_cos() {}
+};
+
+
+class Create_func_cot : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_cot s_singleton;
+
+protected:
+  Create_func_cot() {}
+  virtual ~Create_func_cot() {}
+};
+
+
+class Create_func_crc32 : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_crc32 s_singleton;
+
+protected:
+  Create_func_crc32() {}
+  virtual ~Create_func_crc32() {}
+};
+
+
+class Create_func_datediff : public Create_func_arg2
+{
+public:
+  virtual Item *create_2_arg(THD *thd, Item *arg1, Item *arg2);
+
+  static Create_func_datediff s_singleton;
+
+protected:
+  Create_func_datediff() {}
+  virtual ~Create_func_datediff() {}
+};
+
+
+class Create_func_dayname : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_dayname s_singleton;
+
+protected:
+  Create_func_dayname() {}
+  virtual ~Create_func_dayname() {}
+};
+
+
+class Create_func_dayofmonth : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_dayofmonth s_singleton;
+
+protected:
+  Create_func_dayofmonth() {}
+  virtual ~Create_func_dayofmonth() {}
+};
+
+
+class Create_func_dayofweek : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_dayofweek s_singleton;
+
+protected:
+  Create_func_dayofweek() {}
+  virtual ~Create_func_dayofweek() {}
+};
+
+
+class Create_func_dayofyear : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_dayofyear s_singleton;
+
+protected:
+  Create_func_dayofyear() {}
+  virtual ~Create_func_dayofyear() {}
+};
+
+
+class Create_func_degrees : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_degrees s_singleton;
+
+protected:
+  Create_func_degrees() {}
+  virtual ~Create_func_degrees() {}
+};
+
+
+class Create_func_des_decrypt : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_des_decrypt s_singleton;
+
+protected:
+  Create_func_des_decrypt() {}
+  virtual ~Create_func_des_decrypt() {}
+};
+
+
+class Create_func_des_encrypt : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_des_encrypt s_singleton;
+
+protected:
+  Create_func_des_encrypt() {}
+  virtual ~Create_func_des_encrypt() {}
+};
+
+
+class Create_func_elt : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_elt s_singleton;
+
+protected:
+  Create_func_elt() {}
+  virtual ~Create_func_elt() {}
+};
+
+
+class Create_func_encode : public Create_func_arg2
+{
+public:
+  virtual Item *create_2_arg(THD *thd, Item *arg1, Item *arg2);
+
+  static Create_func_encode s_singleton;
+
+protected:
+  Create_func_encode() {}
+  virtual ~Create_func_encode() {}
+};
+
+
+class Create_func_encrypt : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_encrypt s_singleton;
+
+protected:
+  Create_func_encrypt() {}
+  virtual ~Create_func_encrypt() {}
+};
+
+
+class Create_func_exp : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_exp s_singleton;
+
+protected:
+  Create_func_exp() {}
+  virtual ~Create_func_exp() {}
+};
+
+
+class Create_func_export_set : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_export_set s_singleton;
+
+protected:
+  Create_func_export_set() {}
+  virtual ~Create_func_export_set() {}
+};
+
+
+class Create_func_field : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_field s_singleton;
+
+protected:
+  Create_func_field() {}
+  virtual ~Create_func_field() {}
+};
+
+
+class Create_func_find_in_set : public Create_func_arg2
+{
+public:
+  virtual Item *create_2_arg(THD *thd, Item *arg1, Item *arg2);
+
+  static Create_func_find_in_set s_singleton;
+
+protected:
+  Create_func_find_in_set() {}
+  virtual ~Create_func_find_in_set() {}
+};
+
+
+class Create_func_floor : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_floor s_singleton;
+
+protected:
+  Create_func_floor() {}
+  virtual ~Create_func_floor() {}
+};
+
+
+class Create_func_format : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_format s_singleton;
+
+protected:
+  Create_func_format() {}
+  virtual ~Create_func_format() {}
+};
+
+
+class Create_func_found_rows : public Create_func_arg0
+{
+public:
+  virtual Item *create_builder(THD *thd);
+
+  static Create_func_found_rows s_singleton;
+
+protected:
+  Create_func_found_rows() {}
+  virtual ~Create_func_found_rows() {}
+};
+
+
+class Create_func_from_base64 : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_from_base64 s_singleton;
+
+protected:
+  Create_func_from_base64() {}
+  virtual ~Create_func_from_base64() {}
+};
+
+
+class Create_func_from_days : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_from_days s_singleton;
+
+protected:
+  Create_func_from_days() {}
+  virtual ~Create_func_from_days() {}
+};
+
+
+class Create_func_from_unixtime : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_from_unixtime s_singleton;
+
+protected:
+  Create_func_from_unixtime() {}
+  virtual ~Create_func_from_unixtime() {}
+};
+
+
+class Create_func_get_lock : public Create_func_arg2
+{
+public:
+  virtual Item *create_2_arg(THD *thd, Item *arg1, Item *arg2);
+
+  static Create_func_get_lock s_singleton;
+
+protected:
+  Create_func_get_lock() {}
+  virtual ~Create_func_get_lock() {}
+};
+
+
+class Create_func_greatest : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_greatest s_singleton;
+
+protected:
+  Create_func_greatest() {}
+  virtual ~Create_func_greatest() {}
+};
+
+
+class Create_func_hex : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_hex s_singleton;
+
+protected:
+  Create_func_hex() {}
+  virtual ~Create_func_hex() {}
+};
+
+
+class Create_func_ifnull : public Create_func_arg2
+{
+public:
+  virtual Item *create_2_arg(THD *thd, Item *arg1, Item *arg2);
+
+  static Create_func_ifnull s_singleton;
+
+protected:
+  Create_func_ifnull() {}
+  virtual ~Create_func_ifnull() {}
+};
+
+
+class Create_func_instr : public Create_func_arg2
+{
+public:
+  virtual Item *create_2_arg(THD *thd, Item *arg1, Item *arg2);
+
+  static Create_func_instr s_singleton;
+
+protected:
+  Create_func_instr() {}
+  virtual ~Create_func_instr() {}
+};
+
+
+class Create_func_is_free_lock : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_is_free_lock s_singleton;
+
+protected:
+  Create_func_is_free_lock() {}
+  virtual ~Create_func_is_free_lock() {}
+};
+
+
+class Create_func_is_used_lock : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_is_used_lock s_singleton;
+
+protected:
+  Create_func_is_used_lock() {}
+  virtual ~Create_func_is_used_lock() {}
+};
+
+
+class Create_func_isnull : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_isnull s_singleton;
+
+protected:
+  Create_func_isnull() {}
+  virtual ~Create_func_isnull() {}
+};
+
+
+class Create_func_json_exists : public Create_func_arg2
+{
+public:
+  virtual Item *create_2_arg(THD *thd, Item *arg1, Item *arg2);
+
+  static Create_func_json_exists s_singleton;
+
+protected:
+  Create_func_json_exists() {}
+  virtual ~Create_func_json_exists() {}
+};
+
+
+class Create_func_json_valid : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_json_valid s_singleton;
+
+protected:
+  Create_func_json_valid() {}
+  virtual ~Create_func_json_valid() {}
+};
+
+
+class Create_func_json_compact : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_json_compact s_singleton;
+
+protected:
+  Create_func_json_compact() {}
+  virtual ~Create_func_json_compact() {}
+};
+
+
+class Create_func_json_loose : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_json_loose s_singleton;
+
+protected:
+  Create_func_json_loose() {}
+  virtual ~Create_func_json_loose() {}
+};
+
+
+class Create_func_json_detailed: public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_json_detailed s_singleton;
+
+protected:
+  Create_func_json_detailed() {}
+  virtual ~Create_func_json_detailed() {}
+};
+
+
+class Create_func_json_type : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_json_type s_singleton;
+
+protected:
+  Create_func_json_type() {}
+  virtual ~Create_func_json_type() {}
+};
+
+
+class Create_func_json_depth : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_json_depth s_singleton;
+
+protected:
+  Create_func_json_depth() {}
+  virtual ~Create_func_json_depth() {}
+};
+
+
+class Create_func_json_value : public Create_func_arg2
+{
+public:
+  virtual Item *create_2_arg(THD *thd, Item *arg1, Item *arg2);
+
+  static Create_func_json_value s_singleton;
+
+protected:
+  Create_func_json_value() {}
+  virtual ~Create_func_json_value() {}
+};
+
+
+class Create_func_json_query : public Create_func_arg2
+{
+public:
+  virtual Item *create_2_arg(THD *thd, Item *arg1, Item *arg2);
+
+  static Create_func_json_query s_singleton;
+
+protected:
+  Create_func_json_query() {}
+  virtual ~Create_func_json_query() {}
+};
+
+
+class Create_func_json_keys: public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_json_keys s_singleton;
+
+protected:
+  Create_func_json_keys() {}
+  virtual ~Create_func_json_keys() {}
+};
+
+
+class Create_func_json_contains: public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_json_contains s_singleton;
+
+protected:
+  Create_func_json_contains() {}
+  virtual ~Create_func_json_contains() {}
+};
+
+
+class Create_func_json_contains_path : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_json_contains_path s_singleton;
+
+protected:
+  Create_func_json_contains_path() {}
+  virtual ~Create_func_json_contains_path() {}
+};
+
+
+class Create_func_json_extract : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_json_extract s_singleton;
+
+protected:
+  Create_func_json_extract() {}
+  virtual ~Create_func_json_extract() {}
+};
+
+
+class Create_func_json_search : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_json_search s_singleton;
+
+protected:
+  Create_func_json_search() {}
+  virtual ~Create_func_json_search() {}
+};
+
+
+class Create_func_json_array : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_json_array s_singleton;
+
+protected:
+  Create_func_json_array() {}
+  virtual ~Create_func_json_array() {}
+};
+
+
+class Create_func_json_array_append : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_json_array_append s_singleton;
+
+protected:
+  Create_func_json_array_append() {}
+  virtual ~Create_func_json_array_append() {}
+};
+
+
+class Create_func_json_array_insert : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_json_array_insert s_singleton;
+
+protected:
+  Create_func_json_array_insert() {}
+  virtual ~Create_func_json_array_insert() {}
+};
+
+
+class Create_func_json_insert : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_json_insert s_singleton;
+
+protected:
+  Create_func_json_insert() {}
+  virtual ~Create_func_json_insert() {}
+};
+
+
+class Create_func_json_set : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_json_set s_singleton;
+
+protected:
+  Create_func_json_set() {}
+  virtual ~Create_func_json_set() {}
+};
+
+
+class Create_func_json_replace : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_json_replace s_singleton;
+
+protected:
+  Create_func_json_replace() {}
+  virtual ~Create_func_json_replace() {}
+};
+
+
+class Create_func_json_remove : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_json_remove s_singleton;
+
+protected:
+  Create_func_json_remove() {}
+  virtual ~Create_func_json_remove() {}
+};
+
+
+class Create_func_json_object : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_json_object s_singleton;
+
+protected:
+  Create_func_json_object() {}
+  virtual ~Create_func_json_object() {}
+};
+
+
+class Create_func_json_length : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_json_length s_singleton;
+
+protected:
+  Create_func_json_length() {}
+  virtual ~Create_func_json_length() {}
+};
+
+
+class Create_func_json_merge : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_json_merge s_singleton;
+
+protected:
+  Create_func_json_merge() {}
+  virtual ~Create_func_json_merge() {}
+};
+
+
+class Create_func_json_merge_patch : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_json_merge_patch s_singleton;
+
+protected:
+  Create_func_json_merge_patch() {}
+  virtual ~Create_func_json_merge_patch() {}
+};
+
+
+class Create_func_json_quote : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_json_quote s_singleton;
+
+protected:
+  Create_func_json_quote() {}
+  virtual ~Create_func_json_quote() {}
+};
+
+
+class Create_func_json_unquote : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_json_unquote s_singleton;
+
+protected:
+  Create_func_json_unquote() {}
+  virtual ~Create_func_json_unquote() {}
+};
+
+
+class Create_func_last_day : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_last_day s_singleton;
+
+protected:
+  Create_func_last_day() {}
+  virtual ~Create_func_last_day() {}
+};
+
+
+class Create_func_last_insert_id : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_last_insert_id s_singleton;
+
+protected:
+  Create_func_last_insert_id() {}
+  virtual ~Create_func_last_insert_id() {}
+};
+
+
+class Create_func_lcase : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_lcase s_singleton;
+
+protected:
+  Create_func_lcase() {}
+  virtual ~Create_func_lcase() {}
+};
+
+
+class Create_func_least : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_least s_singleton;
+
+protected:
+  Create_func_least() {}
+  virtual ~Create_func_least() {}
+};
+
+
+class Create_func_length : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_length s_singleton;
+
+protected:
+  Create_func_length() {}
+  virtual ~Create_func_length() {}
+};
+
+class Create_func_octet_length : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_octet_length s_singleton;
+
+protected:
+  Create_func_octet_length() {}
+  virtual ~Create_func_octet_length() {}
+};
+
+
+#ifndef DBUG_OFF
+class Create_func_like_range_min : public Create_func_arg2
+{
+public:
+  virtual Item *create_2_arg(THD *thd, Item *arg1, Item *arg2);
+
+  static Create_func_like_range_min s_singleton;
+
+protected:
+  Create_func_like_range_min() {}
+  virtual ~Create_func_like_range_min() {}
+};
+
+
+class Create_func_like_range_max : public Create_func_arg2
+{
+public:
+  virtual Item *create_2_arg(THD *thd, Item *arg1, Item *arg2);
+
+  static Create_func_like_range_max s_singleton;
+
+protected:
+  Create_func_like_range_max() {}
+  virtual ~Create_func_like_range_max() {}
+};
+#endif
+
+
+class Create_func_ln : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_ln s_singleton;
+
+protected:
+  Create_func_ln() {}
+  virtual ~Create_func_ln() {}
+};
+
+
+class Create_func_load_file : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_load_file s_singleton;
+
+protected:
+  Create_func_load_file() {}
+  virtual ~Create_func_load_file() {}
+};
+
+
+class Create_func_locate : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_locate s_singleton;
+
+protected:
+  Create_func_locate() {}
+  virtual ~Create_func_locate() {}
+};
+
+
+class Create_func_log : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_log s_singleton;
+
+protected:
+  Create_func_log() {}
+  virtual ~Create_func_log() {}
+};
+
+
+class Create_func_log10 : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_log10 s_singleton;
+
+protected:
+  Create_func_log10() {}
+  virtual ~Create_func_log10() {}
+};
+
+
+class Create_func_log2 : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_log2 s_singleton;
+
+protected:
+  Create_func_log2() {}
+  virtual ~Create_func_log2() {}
+};
+
+
+class Create_func_lpad : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name,
+                              List<Item> *item_list)
+  {
+    return thd->variables.sql_mode & MODE_ORACLE ?
+           create_native_oracle(thd, name, item_list) :
+           create_native_std(thd, name, item_list);
+  }
+  static Create_func_lpad s_singleton;
+
+protected:
+  Create_func_lpad() {}
+  virtual ~Create_func_lpad() {}
+  Item *create_native_std(THD *thd, LEX_CSTRING *name, List<Item> *items);
+  Item *create_native_oracle(THD *thd, LEX_CSTRING *name, List<Item> *items);
+};
+
+
+class Create_func_lpad_oracle : public Create_func_lpad
+{
+public:
+  Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list)
+  {
+    return create_native_oracle(thd, name, item_list);
+  }
+  static Create_func_lpad_oracle s_singleton;
+};
+
+
+class Create_func_ltrim : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_ltrim s_singleton;
+
+protected:
+  Create_func_ltrim() {}
+  virtual ~Create_func_ltrim() {}
+};
+
+
+class Create_func_ltrim_oracle : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_ltrim_oracle s_singleton;
+
+protected:
+  Create_func_ltrim_oracle() {}
+  virtual ~Create_func_ltrim_oracle() {}
+};
+
+
+class Create_func_makedate : public Create_func_arg2
+{
+public:
+  virtual Item *create_2_arg(THD *thd, Item *arg1, Item *arg2);
+
+  static Create_func_makedate s_singleton;
+
+protected:
+  Create_func_makedate() {}
+  virtual ~Create_func_makedate() {}
+};
+
+
+class Create_func_maketime : public Create_func_arg3
+{
+public:
+  virtual Item *create_3_arg(THD *thd, Item *arg1, Item *arg2, Item *arg3);
+
+  static Create_func_maketime s_singleton;
+
+protected:
+  Create_func_maketime() {}
+  virtual ~Create_func_maketime() {}
+};
+
+
+class Create_func_make_set : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_make_set s_singleton;
+
+protected:
+  Create_func_make_set() {}
+  virtual ~Create_func_make_set() {}
+};
+
+
+class Create_func_master_pos_wait : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_master_pos_wait s_singleton;
+
+protected:
+  Create_func_master_pos_wait() {}
+  virtual ~Create_func_master_pos_wait() {}
+};
+
+
+class Create_func_master_gtid_wait : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_master_gtid_wait s_singleton;
+
+protected:
+  Create_func_master_gtid_wait() {}
+  virtual ~Create_func_master_gtid_wait() {}
+};
+
+
+class Create_func_md5 : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_md5 s_singleton;
+
+protected:
+  Create_func_md5() {}
+  virtual ~Create_func_md5() {}
+};
+
+
+class Create_func_monthname : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_monthname s_singleton;
+
+protected:
+  Create_func_monthname() {}
+  virtual ~Create_func_monthname() {}
+};
+
+
+class Create_func_name_const : public Create_func_arg2
+{
+public:
+  virtual Item *create_2_arg(THD *thd, Item *arg1, Item *arg2);
+
+  static Create_func_name_const s_singleton;
+
+protected:
+  Create_func_name_const() {}
+  virtual ~Create_func_name_const() {}
+};
+
+
+class Create_func_nullif : public Create_func_arg2
+{
+public:
+  virtual Item *create_2_arg(THD *thd, Item *arg1, Item *arg2);
+
+  static Create_func_nullif s_singleton;
+
+protected:
+  Create_func_nullif() {}
+  virtual ~Create_func_nullif() {}
+};
+
+
+class Create_func_oct : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_oct s_singleton;
+
+protected:
+  Create_func_oct() {}
+  virtual ~Create_func_oct() {}
+};
+
+
+class Create_func_ord : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_ord s_singleton;
+
+protected:
+  Create_func_ord() {}
+  virtual ~Create_func_ord() {}
+};
+
+
+class Create_func_period_add : public Create_func_arg2
+{
+public:
+  virtual Item *create_2_arg(THD *thd, Item *arg1, Item *arg2);
+
+  static Create_func_period_add s_singleton;
+
+protected:
+  Create_func_period_add() {}
+  virtual ~Create_func_period_add() {}
+};
+
+
+class Create_func_period_diff : public Create_func_arg2
+{
+public:
+  virtual Item *create_2_arg(THD *thd, Item *arg1, Item *arg2);
+
+  static Create_func_period_diff s_singleton;
+
+protected:
+  Create_func_period_diff() {}
+  virtual ~Create_func_period_diff() {}
+};
+
+
+class Create_func_pi : public Create_func_arg0
+{
+public:
+  virtual Item *create_builder(THD *thd);
+
+  static Create_func_pi s_singleton;
+
+protected:
+  Create_func_pi() {}
+  virtual ~Create_func_pi() {}
+};
+
+
+class Create_func_pow : public Create_func_arg2
+{
+public:
+  virtual Item *create_2_arg(THD *thd, Item *arg1, Item *arg2);
+
+  static Create_func_pow s_singleton;
+
+protected:
+  Create_func_pow() {}
+  virtual ~Create_func_pow() {}
+};
+
+
+class Create_func_quote : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_quote s_singleton;
+
+protected:
+  Create_func_quote() {}
+  virtual ~Create_func_quote() {}
+};
+
+
+class Create_func_regexp_instr : public Create_func_arg2
+{
+public:
+  virtual Item *create_2_arg(THD *thd, Item *arg1, Item *arg2);
+
+  static Create_func_regexp_instr s_singleton;
+
+protected:
+  Create_func_regexp_instr() {}
+  virtual ~Create_func_regexp_instr() {}
+};
+
+
+class Create_func_regexp_replace : public Create_func_arg3
+{
+public:
+  virtual Item *create_3_arg(THD *thd, Item *arg1, Item *arg2, Item *arg3);
+
+  static Create_func_regexp_replace s_singleton;
+
+protected:
+  Create_func_regexp_replace() {}
+  virtual ~Create_func_regexp_replace() {}
+};
+
+
+class Create_func_regexp_substr : public Create_func_arg2
+{
+public:
+  virtual Item *create_2_arg(THD *thd, Item *arg1, Item *arg2);
+
+  static Create_func_regexp_substr s_singleton;
+
+protected:
+  Create_func_regexp_substr() {}
+  virtual ~Create_func_regexp_substr() {}
+};
+
+
+class Create_func_radians : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_radians s_singleton;
+
+protected:
+  Create_func_radians() {}
+  virtual ~Create_func_radians() {}
+};
+
+
+class Create_func_rand : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_rand s_singleton;
+
+protected:
+  Create_func_rand() {}
+  virtual ~Create_func_rand() {}
+};
+
+
+class Create_func_release_all_locks : public Create_func_arg0
+{
+public:
+  virtual Item *create_builder(THD *thd);
+
+  static Create_func_release_all_locks s_singleton;
+};
+
+
+class Create_func_release_lock : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_release_lock s_singleton;
+
+protected:
+  Create_func_release_lock() {}
+  virtual ~Create_func_release_lock() {}
+};
+
+
+class Create_func_replace_oracle : public Create_func_arg3
+{
+public:
+  virtual Item *create_3_arg(THD *thd, Item *arg1, Item *arg2, Item *arg3);
+
+  static Create_func_replace_oracle s_singleton;
+
+protected:
+  Create_func_replace_oracle() {}
+  virtual ~Create_func_replace_oracle() {}
+};
+
+
+class Create_func_reverse : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_reverse s_singleton;
+
+protected:
+  Create_func_reverse() {}
+  virtual ~Create_func_reverse() {}
+};
+
+
+class Create_func_round : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_round s_singleton;
+
+protected:
+  Create_func_round() {}
+  virtual ~Create_func_round() {}
+};
+
+
+class Create_func_rpad : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name,
+                              List<Item> *item_list)
+  {
+    return thd->variables.sql_mode & MODE_ORACLE ?
+           create_native_oracle(thd, name, item_list) :
+           create_native_std(thd, name, item_list);
+  }
+  static Create_func_rpad s_singleton;
+
+protected:
+  Create_func_rpad() {}
+  virtual ~Create_func_rpad() {}
+  Item *create_native_std(THD *thd, LEX_CSTRING *name, List<Item> *items);
+  Item *create_native_oracle(THD *thd, LEX_CSTRING *name, List<Item> *items);
+};
+
+
+class Create_func_rpad_oracle : public Create_func_rpad
+{
+public:
+  Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list)
+  {
+    return create_native_oracle(thd, name, item_list);
+  }
+  static Create_func_rpad_oracle s_singleton;
+};
+
+
+class Create_func_rtrim : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_rtrim s_singleton;
+
+protected:
+  Create_func_rtrim() {}
+  virtual ~Create_func_rtrim() {}
+};
+
+
+class Create_func_rtrim_oracle : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_rtrim_oracle s_singleton;
+
+protected:
+  Create_func_rtrim_oracle() {}
+  virtual ~Create_func_rtrim_oracle() {}
+};
+
+
+class Create_func_sec_to_time : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_sec_to_time s_singleton;
+
+protected:
+  Create_func_sec_to_time() {}
+  virtual ~Create_func_sec_to_time() {}
+};
+
+
+class Create_func_sha : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_sha s_singleton;
+
+protected:
+  Create_func_sha() {}
+  virtual ~Create_func_sha() {}
+};
+
+
+class Create_func_sha2 : public Create_func_arg2
+{
+public:
+  virtual Item* create_2_arg(THD *thd, Item *arg1, Item *arg2);
+
+  static Create_func_sha2 s_singleton;
+
+protected:
+  Create_func_sha2() {}
+  virtual ~Create_func_sha2() {}
+};
+
+
+class Create_func_sign : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_sign s_singleton;
+
+protected:
+  Create_func_sign() {}
+  virtual ~Create_func_sign() {}
+};
+
+
+class Create_func_sin : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_sin s_singleton;
+
+protected:
+  Create_func_sin() {}
+  virtual ~Create_func_sin() {}
+};
+
+
+class Create_func_sleep : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_sleep s_singleton;
+
+protected:
+  Create_func_sleep() {}
+  virtual ~Create_func_sleep() {}
+};
+
+
+class Create_func_soundex : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_soundex s_singleton;
+
+protected:
+  Create_func_soundex() {}
+  virtual ~Create_func_soundex() {}
+};
+
+
+class Create_func_space : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_space s_singleton;
+
+protected:
+  Create_func_space() {}
+  virtual ~Create_func_space() {}
+};
+
+
+class Create_func_sqrt : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_sqrt s_singleton;
+
+protected:
+  Create_func_sqrt() {}
+  virtual ~Create_func_sqrt() {}
+};
+
+
+class Create_func_str_to_date : public Create_func_arg2
+{
+public:
+  virtual Item *create_2_arg(THD *thd, Item *arg1, Item *arg2);
+
+  static Create_func_str_to_date s_singleton;
+
+protected:
+  Create_func_str_to_date() {}
+  virtual ~Create_func_str_to_date() {}
+};
+
+
+class Create_func_strcmp : public Create_func_arg2
+{
+public:
+  virtual Item *create_2_arg(THD *thd, Item *arg1, Item *arg2);
+
+  static Create_func_strcmp s_singleton;
+
+protected:
+  Create_func_strcmp() {}
+  virtual ~Create_func_strcmp() {}
+};
+
+
+class Create_func_substr_index : public Create_func_arg3
+{
+public:
+  virtual Item *create_3_arg(THD *thd, Item *arg1, Item *arg2, Item *arg3);
+
+  static Create_func_substr_index s_singleton;
+
+protected:
+  Create_func_substr_index() {}
+  virtual ~Create_func_substr_index() {}
+};
+
+
+class Create_func_substr_oracle : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name,
+                              List<Item> *item_list);
+
+  static Create_func_substr_oracle s_singleton;
+
+protected:
+  Create_func_substr_oracle() {}
+  virtual ~Create_func_substr_oracle() {}
+};
+
+
+class Create_func_subtime : public Create_func_arg2
+{
+public:
+  virtual Item *create_2_arg(THD *thd, Item *arg1, Item *arg2);
+
+  static Create_func_subtime s_singleton;
+
+protected:
+  Create_func_subtime() {}
+  virtual ~Create_func_subtime() {}
+};
+
+
+class Create_func_tan : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_tan s_singleton;
+
+protected:
+  Create_func_tan() {}
+  virtual ~Create_func_tan() {}
+};
+
+
+class Create_func_time_format : public Create_func_arg2
+{
+public:
+  virtual Item *create_2_arg(THD *thd, Item *arg1, Item *arg2);
+
+  static Create_func_time_format s_singleton;
+
+protected:
+  Create_func_time_format() {}
+  virtual ~Create_func_time_format() {}
+};
+
+
+class Create_func_time_to_sec : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_time_to_sec s_singleton;
+
+protected:
+  Create_func_time_to_sec() {}
+  virtual ~Create_func_time_to_sec() {}
+};
+
+
+class Create_func_timediff : public Create_func_arg2
+{
+public:
+  virtual Item *create_2_arg(THD *thd, Item *arg1, Item *arg2);
+
+  static Create_func_timediff s_singleton;
+
+protected:
+  Create_func_timediff() {}
+  virtual ~Create_func_timediff() {}
+};
+
+
+class Create_func_to_base64 : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_to_base64 s_singleton;
+
+protected:
+  Create_func_to_base64() {}
+  virtual ~Create_func_to_base64() {}
+};
+
+
+class Create_func_to_days : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_to_days s_singleton;
+
+protected:
+  Create_func_to_days() {}
+  virtual ~Create_func_to_days() {}
+};
+
+class Create_func_to_seconds : public Create_func_arg1
+{
+public:
+  virtual Item* create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_to_seconds s_singleton;
+
+protected:
+  Create_func_to_seconds() {}
+  virtual ~Create_func_to_seconds() {}
+};
+
+
+class Create_func_ucase : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_ucase s_singleton;
+
+protected:
+  Create_func_ucase() {}
+  virtual ~Create_func_ucase() {}
+};
+
+
+class Create_func_uncompress : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_uncompress s_singleton;
+
+protected:
+  Create_func_uncompress() {}
+  virtual ~Create_func_uncompress() {}
+};
+
+
+class Create_func_uncompressed_length : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_uncompressed_length s_singleton;
+
+protected:
+  Create_func_uncompressed_length() {}
+  virtual ~Create_func_uncompressed_length() {}
+};
+
+
+class Create_func_unhex : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_unhex s_singleton;
+
+protected:
+  Create_func_unhex() {}
+  virtual ~Create_func_unhex() {}
+};
+
+
+class Create_func_unix_timestamp : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_unix_timestamp s_singleton;
+
+protected:
+  Create_func_unix_timestamp() {}
+  virtual ~Create_func_unix_timestamp() {}
+};
+
+
+class Create_func_uuid : public Create_func_arg0
+{
+public:
+  virtual Item *create_builder(THD *thd);
+
+  static Create_func_uuid s_singleton;
+
+protected:
+  Create_func_uuid() {}
+  virtual ~Create_func_uuid() {}
+};
+
+
+class Create_func_uuid_short : public Create_func_arg0
+{
+public:
+  virtual Item *create_builder(THD *thd);
+
+  static Create_func_uuid_short s_singleton;
+
+protected:
+  Create_func_uuid_short() {}
+  virtual ~Create_func_uuid_short() {}
+};
+
+
+class Create_func_version : public Create_func_arg0
+{
+public:
+  virtual Item *create_builder(THD *thd);
+
+  static Create_func_version s_singleton;
+
+protected:
+  Create_func_version() {}
+  virtual ~Create_func_version() {}
+};
+
+
+class Create_func_weekday : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_weekday s_singleton;
+
+protected:
+  Create_func_weekday() {}
+  virtual ~Create_func_weekday() {}
+};
+
+
+class Create_func_weekofyear : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_weekofyear s_singleton;
+
+protected:
+  Create_func_weekofyear() {}
+  virtual ~Create_func_weekofyear() {}
+};
+
+
+#ifdef WITH_WSREP
+class Create_func_wsrep_last_written_gtid : public Create_func_arg0
+{
+public:
+  virtual Item *create_builder(THD *thd);
+
+  static Create_func_wsrep_last_written_gtid s_singleton;
+
+protected:
+  Create_func_wsrep_last_written_gtid() {}
+  virtual ~Create_func_wsrep_last_written_gtid() {}
+};
+
+
+class Create_func_wsrep_last_seen_gtid : public Create_func_arg0
+{
+public:
+  virtual Item *create_builder(THD *thd);
+
+  static Create_func_wsrep_last_seen_gtid s_singleton;
+
+protected:
+  Create_func_wsrep_last_seen_gtid() {}
+  virtual ~Create_func_wsrep_last_seen_gtid() {}
+};
+
+
+class Create_func_wsrep_sync_wait_upto : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_wsrep_sync_wait_upto s_singleton;
+
+protected:
+  Create_func_wsrep_sync_wait_upto() {}
+  virtual ~Create_func_wsrep_sync_wait_upto() {}
+};
+#endif /* WITH_WSREP */
+
+
+class Create_func_xml_extractvalue : public Create_func_arg2
+{
+public:
+  virtual Item *create_2_arg(THD *thd, Item *arg1, Item *arg2);
+
+  static Create_func_xml_extractvalue s_singleton;
+
+protected:
+  Create_func_xml_extractvalue() {}
+  virtual ~Create_func_xml_extractvalue() {}
+};
+
+
+class Create_func_xml_update : public Create_func_arg3
+{
+public:
+  virtual Item *create_3_arg(THD *thd, Item *arg1, Item *arg2, Item *arg3);
+
+  static Create_func_xml_update s_singleton;
+
+protected:
+  Create_func_xml_update() {}
+  virtual ~Create_func_xml_update() {}
+};
+
+
+class Create_func_year_week : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, LEX_CSTRING *name, List<Item> *item_list);
+
+  static Create_func_year_week s_singleton;
+
+protected:
+  Create_func_year_week() {}
+  virtual ~Create_func_year_week() {}
+};
+
+
+/*
+=============================================================================
+  IMPLEMENTATION
+=============================================================================
+*/
+
+/**
+  Checks if there are named parameters in a parameter list.
+  The syntax to name parameters in a function call is as follow:
+  <code>foo(expr AS named, expr named, expr AS "named", expr "named")</code>
+  @param params The parameter list, can be null
+  @return true if one or more parameter is named
+*/
+static bool has_named_parameters(List<Item> *params)
+{
+  if (params)
+  {
+    Item *param;
+    List_iterator<Item> it(*params);
+    while ((param= it++))
+    {
+      if (! param->is_autogenerated_name())
+        return true;
+    }
+  }
+
+  return false;
+}
+
+
+Item*
+Create_qfunc::create_func(THD *thd, LEX_CSTRING *name, List<Item> *item_list)
+{
+  LEX_CSTRING db;
+
+  if (unlikely(! thd->db.str && ! thd->lex->sphead))
+  {
+    /*
+      The proper error message should be in the lines of:
+        Can't resolve <name>() to a function call,
+        because this function:
+        - is not a native function,
+        - is not a user defined function,
+        - can not match a qualified (read: stored) function
+          since no database is selected.
+      Reusing ER_SP_DOES_NOT_EXIST have a message consistent with
+      the case when a default database exist, see Create_sp_func::create().
+    */
+    my_error(ER_SP_DOES_NOT_EXIST, MYF(0),
+             "FUNCTION", name->str);
+    return NULL;
+  }
+
+  if (thd->lex->copy_db_to(&db))
+    return NULL;
+
+  return create_with_db(thd, &db, name, false, item_list);
+}
+
+
+#ifdef HAVE_DLOPEN
+Create_udf_func Create_udf_func::s_singleton;
+
+Item*
+Create_udf_func::create_func(THD *thd, LEX_CSTRING *name, List<Item> *item_list)
+{
+  udf_func *udf= find_udf(name->str,  name->length);
+  DBUG_ASSERT(udf);
+  return create(thd, udf, item_list);
+}
+
+
+Item*
+Create_udf_func::create(THD *thd, udf_func *udf, List<Item> *item_list)
+{
+  Item *func= NULL;
+  int arg_count= 0;
+
+  DBUG_ENTER("Create_udf_func::create");
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  thd->lex->set_stmt_unsafe(LEX::BINLOG_STMT_UNSAFE_UDF);
+
+  DBUG_ASSERT(   (udf->type == UDFTYPE_FUNCTION)
+              || (udf->type == UDFTYPE_AGGREGATE));
+
+  switch(udf->returns) {
+  case STRING_RESULT:
+  {
+    if (udf->type == UDFTYPE_FUNCTION)
+    {
+      if (arg_count)
+        func= new (thd->mem_root) Item_func_udf_str(thd, udf, *item_list);
+      else
+        func= new (thd->mem_root) Item_func_udf_str(thd, udf);
+    }
+    else
+    {
+      if (arg_count)
+        func= new (thd->mem_root) Item_sum_udf_str(thd, udf, *item_list);
+      else
+        func= new (thd->mem_root) Item_sum_udf_str(thd, udf);
+    }
+    break;
+  }
+  case REAL_RESULT:
+  {
+    if (udf->type == UDFTYPE_FUNCTION)
+    {
+      if (arg_count)
+        func= new (thd->mem_root) Item_func_udf_float(thd, udf, *item_list);
+      else
+        func= new (thd->mem_root) Item_func_udf_float(thd, udf);
+    }
+    else
+    {
+      if (arg_count)
+        func= new (thd->mem_root) Item_sum_udf_float(thd, udf, *item_list);
+      else
+        func= new (thd->mem_root) Item_sum_udf_float(thd, udf);
+    }
+    break;
+  }
+  case INT_RESULT:
+  {
+    if (udf->type == UDFTYPE_FUNCTION)
+    {
+      if (arg_count)
+        func= new (thd->mem_root) Item_func_udf_int(thd, udf, *item_list);
+      else
+        func= new (thd->mem_root) Item_func_udf_int(thd, udf);
+    }
+    else
+    {
+      if (arg_count)
+        func= new (thd->mem_root) Item_sum_udf_int(thd, udf, *item_list);
+      else
+        func= new (thd->mem_root) Item_sum_udf_int(thd, udf);
+    }
+    break;
+  }
+  case DECIMAL_RESULT:
+  {
+    if (udf->type == UDFTYPE_FUNCTION)
+    {
+      if (arg_count)
+        func= new (thd->mem_root) Item_func_udf_decimal(thd, udf, *item_list);
+      else
+        func= new (thd->mem_root) Item_func_udf_decimal(thd, udf);
+    }
+    else
+    {
+      if (arg_count)
+        func= new (thd->mem_root) Item_sum_udf_decimal(thd, udf, *item_list);
+      else
+        func= new (thd->mem_root) Item_sum_udf_decimal(thd, udf);
+    }
+    break;
+  }
+  default:
+  {
+    my_error(ER_NOT_SUPPORTED_YET, MYF(0), "UDF return type");
+  }
+  }
+  thd->lex->safe_to_cache_query= 0;
+  DBUG_RETURN(func);
+}
+#endif
+
+
+Create_sp_func Create_sp_func::s_singleton;
+
+Item*
+Create_sp_func::create_with_db(THD *thd, LEX_CSTRING *db, LEX_CSTRING *name,
+                               bool use_explicit_name, List<Item> *item_list)
+{
+  int arg_count= 0;
+  Item *func= NULL;
+  LEX *lex= thd->lex;
+  sp_name *qname;
+  const Sp_handler *sph= &sp_handler_function;
+  Database_qualified_name pkgname(&null_clex_str, &null_clex_str);
+
+  if (unlikely(has_named_parameters(item_list)))
+  {
+    /*
+      The syntax "db.foo(expr AS p1, expr AS p2, ...) is invalid,
+      and has been rejected during syntactic parsing already,
+      because a stored function call may not have named parameters.
+
+      The syntax "foo(expr AS p1, expr AS p2, ...)" is correct,
+      because it can refer to a User Defined Function call.
+      For a Stored Function however, this has no semantic.
+    */
+    my_error(ER_WRONG_PARAMETERS_TO_STORED_FCT, MYF(0), name->str);
+    return NULL;
+  }
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  qname= new (thd->mem_root) sp_name(db, name, use_explicit_name);
+  if (unlikely(sph->sp_resolve_package_routine(thd, thd->lex->sphead,
+                                               qname, &sph, &pkgname)))
+    return NULL;
+  sph->add_used_routine(lex, thd, qname);
+  if (pkgname.m_name.length)
+    sp_handler_package_body.add_used_routine(lex, thd, &pkgname);
+  Name_resolution_context *ctx= lex->current_context();
+  if (arg_count > 0)
+    func= new (thd->mem_root) Item_func_sp(thd, ctx, qname, sph, *item_list);
+  else
+    func= new (thd->mem_root) Item_func_sp(thd, ctx, qname, sph);
+
+  lex->safe_to_cache_query= 0;
+  return func;
+}
+
+
+Item*
+Create_native_func::create_func(THD *thd, LEX_CSTRING *name, List<Item> *item_list)
+{
+  if (unlikely(has_named_parameters(item_list)))
+  {
+    my_error(ER_WRONG_PARAMETERS_TO_NATIVE_FCT, MYF(0), name->str);
+    return NULL;
+  }
+
+  return create_native(thd, name, item_list);
+}
+
+
+Item*
+Create_func_arg0::create_func(THD *thd, LEX_CSTRING *name, List<Item> *item_list)
+{
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  if (unlikely(arg_count != 0))
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    return NULL;
+  }
+
+  return create_builder(thd);
+}
+
+
+Item*
+Create_func_arg1::create_func(THD *thd, LEX_CSTRING *name, List<Item> *item_list)
+{
+  int arg_count= 0;
+
+  if (item_list)
+    arg_count= item_list->elements;
+
+  if (unlikely(arg_count != 1))
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    return NULL;
+  }
+
+  Item *param_1= item_list->pop();
+
+  if (unlikely(! param_1->is_autogenerated_name()))
+  {
+    my_error(ER_WRONG_PARAMETERS_TO_NATIVE_FCT, MYF(0), name->str);
+    return NULL;
+  }
+
+  return create_1_arg(thd, param_1);
+}
+
+
+Item*
+Create_func_arg2::create_func(THD *thd, LEX_CSTRING *name, List<Item> *item_list)
+{
+  int arg_count= 0;
+
+  if (item_list)
+    arg_count= item_list->elements;
+
+  if (unlikely(arg_count != 2))
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    return NULL;
+  }
+
+  Item *param_1= item_list->pop();
+  Item *param_2= item_list->pop();
+
+  if (unlikely(!param_1->is_autogenerated_name() ||
+               !param_2->is_autogenerated_name()))
+  {
+    my_error(ER_WRONG_PARAMETERS_TO_NATIVE_FCT, MYF(0), name->str);
+    return NULL;
+  }
+
+  return create_2_arg(thd, param_1, param_2);
+}
+
+
+Item*
+Create_func_arg3::create_func(THD *thd, LEX_CSTRING *name, List<Item> *item_list)
+{
+  int arg_count= 0;
+
+  if (item_list)
+    arg_count= item_list->elements;
+
+  if (unlikely(arg_count != 3))
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    return NULL;
+  }
+
+  Item *param_1= item_list->pop();
+  Item *param_2= item_list->pop();
+  Item *param_3= item_list->pop();
+
+  if (unlikely(!param_1->is_autogenerated_name() ||
+               !param_2->is_autogenerated_name() ||
+               !param_3->is_autogenerated_name()))
+  {
+    my_error(ER_WRONG_PARAMETERS_TO_NATIVE_FCT, MYF(0), name->str);
+    return NULL;
+  }
+
+  return create_3_arg(thd, param_1, param_2, param_3);
+}
+
+
+Create_func_abs Create_func_abs::s_singleton;
+
+Item*
+Create_func_abs::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_abs(thd, arg1);
+}
+
+
+Create_func_acos Create_func_acos::s_singleton;
+
+Item*
+Create_func_acos::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_acos(thd, arg1);
+}
+
+
+Create_func_addtime Create_func_addtime::s_singleton;
+
+Item*
+Create_func_addtime::create_2_arg(THD *thd, Item *arg1, Item *arg2)
+{
+  return new (thd->mem_root) Item_func_add_time(thd, arg1, arg2, false);
+}
+
+
+Create_func_aes_encrypt Create_func_aes_encrypt::s_singleton;
+
+Item*
+Create_func_aes_encrypt::create_2_arg(THD *thd, Item *arg1, Item *arg2)
+{
+  return new (thd->mem_root) Item_func_aes_encrypt(thd, arg1, arg2);
+}
+
+
+Create_func_aes_decrypt Create_func_aes_decrypt::s_singleton;
+
+Item*
+Create_func_aes_decrypt::create_2_arg(THD *thd, Item *arg1, Item *arg2)
+{
+  return new (thd->mem_root) Item_func_aes_decrypt(thd, arg1, arg2);
+}
+
+
+Create_func_asin Create_func_asin::s_singleton;
+
+Item*
+Create_func_asin::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_asin(thd, arg1);
+}
+
+
+Create_func_atan Create_func_atan::s_singleton;
+
+Item*
+Create_func_atan::create_native(THD *thd, LEX_CSTRING *name,
+                                List<Item> *item_list)
+{
+  Item* func= NULL;
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  switch (arg_count) {
+  case 1:
+  {
+    Item *param_1= item_list->pop();
+    func= new (thd->mem_root) Item_func_atan(thd, param_1);
+    break;
+  }
+  case 2:
+  {
+    Item *param_1= item_list->pop();
+    Item *param_2= item_list->pop();
+    func= new (thd->mem_root) Item_func_atan(thd, param_1, param_2);
+    break;
+  }
+  default:
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    break;
+  }
+  }
+
+  return func;
+}
+
+
+Create_func_benchmark Create_func_benchmark::s_singleton;
+
+Item*
+Create_func_benchmark::create_2_arg(THD *thd, Item *arg1, Item *arg2)
+{
+  thd->lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
+  return new (thd->mem_root) Item_func_benchmark(thd, arg1, arg2);
+}
+
+
+Create_func_bin Create_func_bin::s_singleton;
+
+Item*
+Create_func_bin::create_1_arg(THD *thd, Item *arg1)
+{
+  Item *i10= new (thd->mem_root) Item_int(thd, (int32) 10,2);
+  Item *i2= new (thd->mem_root) Item_int(thd, (int32) 2,1);
+  return new (thd->mem_root) Item_func_conv(thd, arg1, i10, i2);
+}
+
+
+Create_func_binlog_gtid_pos Create_func_binlog_gtid_pos::s_singleton;
+
+Item*
+Create_func_binlog_gtid_pos::create_2_arg(THD *thd, Item *arg1, Item *arg2)
+{
+#ifdef HAVE_REPLICATION
+  if (unlikely(!mysql_bin_log.is_open()))
+#endif
+  {
+    my_error(ER_NO_BINARY_LOGGING, MYF(0));
+    return NULL;
+  }
+  thd->lex->set_stmt_unsafe(LEX::BINLOG_STMT_UNSAFE_SYSTEM_FUNCTION);
+  return new (thd->mem_root) Item_func_binlog_gtid_pos(thd, arg1, arg2);
+}
+
+
+Create_func_bit_count Create_func_bit_count::s_singleton;
+
+Item*
+Create_func_bit_count::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_bit_count(thd, arg1);
+}
+
+
+Create_func_bit_length Create_func_bit_length::s_singleton;
+
+Item*
+Create_func_bit_length::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_bit_length(thd, arg1);
+}
+
+
+Create_func_ceiling Create_func_ceiling::s_singleton;
+
+Item*
+Create_func_ceiling::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_ceiling(thd, arg1);
+}
+
+
+Create_func_chr Create_func_chr::s_singleton;
+
+Item*
+Create_func_chr::create_1_arg(THD *thd, Item *arg1)
+{
+  CHARSET_INFO *cs_db= thd->variables.collation_database;
+  return new (thd->mem_root) Item_func_chr(thd, arg1, cs_db);
+}
+
+
+Create_func_char_length Create_func_char_length::s_singleton;
+
+Item*
+Create_func_char_length::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_char_length(thd, arg1);
+}
+
+
+Create_func_coercibility Create_func_coercibility::s_singleton;
+
+Item*
+Create_func_coercibility::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_coercibility(thd, arg1);
+}
+
+
+Create_func_dyncol_check Create_func_dyncol_check::s_singleton;
+
+Item*
+Create_func_dyncol_check::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_dyncol_check(thd, arg1);
+}
+
+Create_func_dyncol_exists Create_func_dyncol_exists::s_singleton;
+
+Item*
+Create_func_dyncol_exists::create_2_arg(THD *thd, Item *arg1, Item *arg2)
+{
+  return new (thd->mem_root) Item_func_dyncol_exists(thd, arg1, arg2);
+}
+
+Create_func_dyncol_list Create_func_dyncol_list::s_singleton;
+
+Item*
+Create_func_dyncol_list::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_dyncol_list(thd, arg1);
+}
+
+Create_func_dyncol_json Create_func_dyncol_json::s_singleton;
+
+Item*
+Create_func_dyncol_json::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_dyncol_json(thd, arg1);
+}
+
+Create_func_concat Create_func_concat::s_singleton;
+
+Item*
+Create_func_concat::create_native(THD *thd, LEX_CSTRING *name,
+                                  List<Item> *item_list)
+{
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  if (unlikely(arg_count < 1))
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    return NULL;
+  }
+
+  return thd->variables.sql_mode & MODE_ORACLE ?
+    new (thd->mem_root) Item_func_concat_operator_oracle(thd, *item_list) :
+    new (thd->mem_root) Item_func_concat(thd, *item_list);
+}
+
+Create_func_concat_operator_oracle
+  Create_func_concat_operator_oracle::s_singleton;
+
+Item*
+Create_func_concat_operator_oracle::create_native(THD *thd, LEX_CSTRING *name,
+                                                  List<Item> *item_list)
+{
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  if (unlikely(arg_count < 1))
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    return NULL;
+  }
+
+  return new (thd->mem_root) Item_func_concat_operator_oracle(thd, *item_list);
+}
+
+Create_func_decode_histogram Create_func_decode_histogram::s_singleton;
+
+Item *
+Create_func_decode_histogram::create_2_arg(THD *thd, Item *arg1, Item *arg2)
+{
+  return new (thd->mem_root) Item_func_decode_histogram(thd, arg1, arg2);
+}
+
+Create_func_decode_oracle Create_func_decode_oracle::s_singleton;
+
+Item*
+Create_func_decode_oracle::create_native(THD *thd, LEX_CSTRING *name,
+                                         List<Item> *item_list)
+{
+  uint arg_count= item_list ? item_list->elements : 0;
+  if (unlikely(arg_count < 3))
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    return NULL;
+  }
+  return new (thd->mem_root) Item_func_decode_oracle(thd, *item_list);
+}
+
+Create_func_concat_ws Create_func_concat_ws::s_singleton;
+
+Item*
+Create_func_concat_ws::create_native(THD *thd, LEX_CSTRING *name,
+                                     List<Item> *item_list)
+{
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  /* "WS" stands for "With Separator": this function takes 2+ arguments */
+  if (unlikely(arg_count < 2))
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    return NULL;
+  }
+
+  return new (thd->mem_root) Item_func_concat_ws(thd, *item_list);
+}
+
+
+Create_func_compress Create_func_compress::s_singleton;
+
+Item*
+Create_func_compress::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_compress(thd, arg1);
+}
+
+
+Create_func_connection_id Create_func_connection_id::s_singleton;
+
+Item*
+Create_func_connection_id::create_builder(THD *thd)
+{
+  thd->lex->safe_to_cache_query= 0;
+  return new (thd->mem_root) Item_func_connection_id(thd);
+}
+
+
+Create_func_nvl2 Create_func_nvl2::s_singleton;
+
+Item*
+Create_func_nvl2::create_3_arg(THD *thd, Item *arg1, Item *arg2, Item *arg3)
+{
+  return new (thd->mem_root) Item_func_nvl2(thd, arg1, arg2, arg3);
+}
+
+
+Create_func_conv Create_func_conv::s_singleton;
+
+Item*
+Create_func_conv::create_3_arg(THD *thd, Item *arg1, Item *arg2, Item *arg3)
+{
+  return new (thd->mem_root) Item_func_conv(thd, arg1, arg2, arg3);
+}
+
+
+Create_func_convert_tz Create_func_convert_tz::s_singleton;
+
+Item*
+Create_func_convert_tz::create_3_arg(THD *thd, Item *arg1, Item *arg2, Item *arg3)
+{
+  return new (thd->mem_root) Item_func_convert_tz(thd, arg1, arg2, arg3);
+}
+
+
+Create_func_cos Create_func_cos::s_singleton;
+
+Item*
+Create_func_cos::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_cos(thd, arg1);
+}
+
+
+Create_func_cot Create_func_cot::s_singleton;
+
+Item*
+Create_func_cot::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_cot(thd, arg1);
+}
+
+
+Create_func_crc32 Create_func_crc32::s_singleton;
+
+Item*
+Create_func_crc32::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_crc32(thd, arg1);
+}
+
+Create_func_datediff Create_func_datediff::s_singleton;
+
+Item*
+Create_func_datediff::create_2_arg(THD *thd, Item *arg1, Item *arg2)
+{
+  Item *i1= new (thd->mem_root) Item_func_to_days(thd, arg1);
+  Item *i2= new (thd->mem_root) Item_func_to_days(thd, arg2);
+
+  return new (thd->mem_root) Item_func_minus(thd, i1, i2);
+}
+
+
+Create_func_dayname Create_func_dayname::s_singleton;
+
+Item*
+Create_func_dayname::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_dayname(thd, arg1);
+}
+
+
+Create_func_dayofmonth Create_func_dayofmonth::s_singleton;
+
+Item*
+Create_func_dayofmonth::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_dayofmonth(thd, arg1);
+}
+
+
+Create_func_dayofweek Create_func_dayofweek::s_singleton;
+
+Item*
+Create_func_dayofweek::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_weekday(thd, arg1, 1);
+}
+
+
+Create_func_dayofyear Create_func_dayofyear::s_singleton;
+
+Item*
+Create_func_dayofyear::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_dayofyear(thd, arg1);
+}
+
+
+Create_func_degrees Create_func_degrees::s_singleton;
+
+Item*
+Create_func_degrees::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_units(thd, (char*) "degrees", arg1,
+                                             180/M_PI, 0.0);
+}
+
+
+Create_func_des_decrypt Create_func_des_decrypt::s_singleton;
+
+Item*
+Create_func_des_decrypt::create_native(THD *thd, LEX_CSTRING *name,
+                                       List<Item> *item_list)
+{
+  Item *func= NULL;
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  switch (arg_count) {
+  case 1:
+  {
+    Item *param_1= item_list->pop();
+    func= new (thd->mem_root) Item_func_des_decrypt(thd, param_1);
+    break;
+  }
+  case 2:
+  {
+    Item *param_1= item_list->pop();
+    Item *param_2= item_list->pop();
+    func= new (thd->mem_root) Item_func_des_decrypt(thd, param_1, param_2);
+    break;
+  }
+  default:
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    break;
+  }
+  }
+
+  return func;
+}
+
+
+Create_func_des_encrypt Create_func_des_encrypt::s_singleton;
+
+Item*
+Create_func_des_encrypt::create_native(THD *thd, LEX_CSTRING *name,
+                                       List<Item> *item_list)
+{
+  Item *func= NULL;
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  switch (arg_count) {
+  case 1:
+  {
+    Item *param_1= item_list->pop();
+    func= new (thd->mem_root) Item_func_des_encrypt(thd, param_1);
+    break;
+  }
+  case 2:
+  {
+    Item *param_1= item_list->pop();
+    Item *param_2= item_list->pop();
+    func= new (thd->mem_root) Item_func_des_encrypt(thd, param_1, param_2);
+    break;
+  }
+  default:
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    break;
+  }
+  }
+
+  return func;
+}
+
+
+Create_func_elt Create_func_elt::s_singleton;
+
+Item*
+Create_func_elt::create_native(THD *thd, LEX_CSTRING *name,
+                               List<Item> *item_list)
+{
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  if (unlikely(arg_count < 2))
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    return NULL;
+  }
+
+  return new (thd->mem_root) Item_func_elt(thd, *item_list);
+}
+
+
+Create_func_encode Create_func_encode::s_singleton;
+
+Item*
+Create_func_encode::create_2_arg(THD *thd, Item *arg1, Item *arg2)
+{
+  return new (thd->mem_root) Item_func_encode(thd, arg1, arg2);
+}
+
+
+Create_func_encrypt Create_func_encrypt::s_singleton;
+
+Item*
+Create_func_encrypt::create_native(THD *thd, LEX_CSTRING *name,
+                                   List<Item> *item_list)
+{
+  Item *func= NULL;
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  switch (arg_count) {
+  case 1:
+  {
+    Item *param_1= item_list->pop();
+    func= new (thd->mem_root) Item_func_encrypt(thd, param_1);
+    thd->lex->uncacheable(UNCACHEABLE_RAND);
+    break;
+  }
+  case 2:
+  {
+    Item *param_1= item_list->pop();
+    Item *param_2= item_list->pop();
+    func= new (thd->mem_root) Item_func_encrypt(thd, param_1, param_2);
+    break;
+  }
+  default:
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    break;
+  }
+  }
+
+  return func;
+}
+
+
+Create_func_exp Create_func_exp::s_singleton;
+
+Item*
+Create_func_exp::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_exp(thd, arg1);
+}
+
+
+Create_func_export_set Create_func_export_set::s_singleton;
+
+Item*
+Create_func_export_set::create_native(THD *thd, LEX_CSTRING *name,
+                                      List<Item> *item_list)
+{
+  Item *func= NULL;
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  switch (arg_count) {
+  case 3:
+  {
+    Item *param_1= item_list->pop();
+    Item *param_2= item_list->pop();
+    Item *param_3= item_list->pop();
+    func= new (thd->mem_root) Item_func_export_set(thd, param_1, param_2, param_3);
+    break;
+  }
+  case 4:
+  {
+    Item *param_1= item_list->pop();
+    Item *param_2= item_list->pop();
+    Item *param_3= item_list->pop();
+    Item *param_4= item_list->pop();
+    func= new (thd->mem_root) Item_func_export_set(thd, param_1, param_2, param_3,
+                                                   param_4);
+    break;
+  }
+  case 5:
+  {
+    Item *param_1= item_list->pop();
+    Item *param_2= item_list->pop();
+    Item *param_3= item_list->pop();
+    Item *param_4= item_list->pop();
+    Item *param_5= item_list->pop();
+    func= new (thd->mem_root) Item_func_export_set(thd, param_1, param_2, param_3,
+                                                   param_4, param_5);
+    break;
+  }
+  default:
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    break;
+  }
+  }
+
+  return func;
+}
+
+
+Create_func_field Create_func_field::s_singleton;
+
+Item*
+Create_func_field::create_native(THD *thd, LEX_CSTRING *name,
+                                 List<Item> *item_list)
+{
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  if (unlikely(arg_count < 2))
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    return NULL;
+  }
+
+  return new (thd->mem_root) Item_func_field(thd, *item_list);
+}
+
+
+Create_func_find_in_set Create_func_find_in_set::s_singleton;
+
+Item*
+Create_func_find_in_set::create_2_arg(THD *thd, Item *arg1, Item *arg2)
+{
+  return new (thd->mem_root) Item_func_find_in_set(thd, arg1, arg2);
+}
+
+
+Create_func_floor Create_func_floor::s_singleton;
+
+Item*
+Create_func_floor::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_floor(thd, arg1);
+}
+
+
+Create_func_format Create_func_format::s_singleton;
+
+Item*
+Create_func_format::create_native(THD *thd, LEX_CSTRING *name,
+                                  List<Item> *item_list)
+{
+  Item *func= NULL;
+  int arg_count= item_list ? item_list->elements : 0;
+
+  switch (arg_count) {
+  case 2:
+  {
+    Item *param_1= item_list->pop();
+    Item *param_2= item_list->pop();
+    func= new (thd->mem_root) Item_func_format(thd, param_1, param_2);
+    break;
+  }
+  case 3:
+  {
+    Item *param_1= item_list->pop();
+    Item *param_2= item_list->pop();
+    Item *param_3= item_list->pop();
+    func= new (thd->mem_root) Item_func_format(thd, param_1, param_2, param_3);
+    break;
+  }
+  default:
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    break;
+  }
+
+  return func;
+}
+
+
+Create_func_from_base64 Create_func_from_base64::s_singleton;
+
+
+Item *
+Create_func_from_base64::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_from_base64(thd, arg1);
+}
+
+
+Create_func_found_rows Create_func_found_rows::s_singleton;
+
+Item*
+Create_func_found_rows::create_builder(THD *thd)
+{
+  DBUG_ENTER("Create_func_found_rows::create");
+  thd->lex->set_stmt_unsafe(LEX::BINLOG_STMT_UNSAFE_SYSTEM_FUNCTION);
+  thd->lex->safe_to_cache_query= 0;
+  DBUG_RETURN(new (thd->mem_root) Item_func_found_rows(thd));
+}
+
+
+Create_func_from_days Create_func_from_days::s_singleton;
+
+Item*
+Create_func_from_days::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_from_days(thd, arg1);
+}
+
+
+Create_func_from_unixtime Create_func_from_unixtime::s_singleton;
+
+Item*
+Create_func_from_unixtime::create_native(THD *thd, LEX_CSTRING *name,
+                                         List<Item> *item_list)
+{
+  Item *func= NULL;
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  switch (arg_count) {
+  case 1:
+  {
+    Item *param_1= item_list->pop();
+    func= new (thd->mem_root) Item_func_from_unixtime(thd, param_1);
+    break;
+  }
+  case 2:
+  {
+    Item *param_1= item_list->pop();
+    Item *param_2= item_list->pop();
+    Item *ut= new (thd->mem_root) Item_func_from_unixtime(thd, param_1);
+    func= new (thd->mem_root) Item_func_date_format(thd, ut, param_2);
+    break;
+  }
+  default:
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    break;
+  }
+  }
+
+  return func;
+}
+
+
+
+Create_func_get_lock Create_func_get_lock::s_singleton;
+
+Item*
+Create_func_get_lock::create_2_arg(THD *thd, Item *arg1, Item *arg2)
+{
+  thd->lex->set_stmt_unsafe(LEX::BINLOG_STMT_UNSAFE_SYSTEM_FUNCTION);
+  thd->lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
+  return new (thd->mem_root) Item_func_get_lock(thd, arg1, arg2);
+}
+
+
+Create_func_greatest Create_func_greatest::s_singleton;
+
+Item*
+Create_func_greatest::create_native(THD *thd, LEX_CSTRING *name,
+                                    List<Item> *item_list)
+{
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  if (unlikely(arg_count < 2))
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    return NULL;
+  }
+
+  return new (thd->mem_root) Item_func_max(thd, *item_list);
+}
+
+
+Create_func_hex Create_func_hex::s_singleton;
+
+Item*
+Create_func_hex::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_hex(thd, arg1);
+}
+
+
+Create_func_ifnull Create_func_ifnull::s_singleton;
+
+Item*
+Create_func_ifnull::create_2_arg(THD *thd, Item *arg1, Item *arg2)
+{
+  return new (thd->mem_root) Item_func_ifnull(thd, arg1, arg2);
+}
+
+
+Create_func_instr Create_func_instr::s_singleton;
+
+Item*
+Create_func_instr::create_2_arg(THD *thd, Item *arg1, Item *arg2)
+{
+  return new (thd->mem_root) Item_func_locate(thd, arg1, arg2);
+}
+
+
+Create_func_is_free_lock Create_func_is_free_lock::s_singleton;
+
+Item*
+Create_func_is_free_lock::create_1_arg(THD *thd, Item *arg1)
+{
+  thd->lex->set_stmt_unsafe(LEX::BINLOG_STMT_UNSAFE_SYSTEM_FUNCTION);
+  thd->lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
+  return new (thd->mem_root) Item_func_is_free_lock(thd, arg1);
+}
+
+
+Create_func_is_used_lock Create_func_is_used_lock::s_singleton;
+
+Item*
+Create_func_is_used_lock::create_1_arg(THD *thd, Item *arg1)
+{
+  thd->lex->set_stmt_unsafe(LEX::BINLOG_STMT_UNSAFE_SYSTEM_FUNCTION);
+  thd->lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
+  return new (thd->mem_root) Item_func_is_used_lock(thd, arg1);
+}
+
+
+Create_func_isnull Create_func_isnull::s_singleton;
+
+Item*
+Create_func_isnull::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_isnull(thd, arg1);
+}
+
+
+Create_func_json_exists Create_func_json_exists::s_singleton;
+
+Item*
+Create_func_json_exists::create_2_arg(THD *thd, Item *arg1, Item *arg2)
+{
+  status_var_increment(current_thd->status_var.feature_json);
+  return new (thd->mem_root) Item_func_json_exists(thd, arg1, arg2);
+}
+
+
+Create_func_json_detailed Create_func_json_detailed::s_singleton;
+
+Item*
+Create_func_json_detailed::create_native(THD *thd, LEX_CSTRING *name,
+                                     List<Item> *item_list)
+{
+  Item *func= NULL;
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  if (unlikely(arg_count < 1 || arg_count > 2 /* json_doc, [path]...*/))
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+  }
+  else
+  {
+    func= new (thd->mem_root) Item_func_json_format(thd, *item_list);
+  }
+
+  status_var_increment(current_thd->status_var.feature_json);
+  return func;
+}
+
+
+Create_func_json_loose Create_func_json_loose::s_singleton;
+
+Item*
+Create_func_json_loose::create_1_arg(THD *thd, Item *arg1)
+{
+  status_var_increment(current_thd->status_var.feature_json);
+  return new (thd->mem_root) Item_func_json_format(thd, arg1,
+               Item_func_json_format::LOOSE);
+}
+
+
+Create_func_json_compact Create_func_json_compact::s_singleton;
+
+Item*
+Create_func_json_compact::create_1_arg(THD *thd, Item *arg1)
+{
+  status_var_increment(current_thd->status_var.feature_json);
+  return new (thd->mem_root) Item_func_json_format(thd, arg1,
+               Item_func_json_format::COMPACT);
+}
+
+
+Create_func_json_valid Create_func_json_valid::s_singleton;
+
+Item*
+Create_func_json_valid::create_1_arg(THD *thd, Item *arg1)
+{
+  status_var_increment(current_thd->status_var.feature_json);
+  return new (thd->mem_root) Item_func_json_valid(thd, arg1);
+}
+
+
+Create_func_json_type Create_func_json_type::s_singleton;
+
+Item*
+Create_func_json_type::create_1_arg(THD *thd, Item *arg1)
+{
+  status_var_increment(current_thd->status_var.feature_json);
+  return new (thd->mem_root) Item_func_json_type(thd, arg1);
+}
+
+
+Create_func_json_depth Create_func_json_depth::s_singleton;
+
+Item*
+Create_func_json_depth::create_1_arg(THD *thd, Item *arg1)
+{
+  status_var_increment(current_thd->status_var.feature_json);
+  return new (thd->mem_root) Item_func_json_depth(thd, arg1);
+}
+
+
+Create_func_json_value Create_func_json_value::s_singleton;
+
+Item*
+Create_func_json_value::create_2_arg(THD *thd, Item *arg1, Item *arg2)
+{
+  status_var_increment(current_thd->status_var.feature_json);
+  return new (thd->mem_root) Item_func_json_value(thd, arg1, arg2);
+}
+
+
+Create_func_json_query Create_func_json_query::s_singleton;
+
+Item*
+Create_func_json_query::create_2_arg(THD *thd, Item *arg1, Item *arg2)
+{
+  status_var_increment(current_thd->status_var.feature_json);
+  return new (thd->mem_root) Item_func_json_query(thd, arg1, arg2);
+}
+
+
+Create_func_json_quote Create_func_json_quote::s_singleton;
+
+Item*
+Create_func_json_quote::create_1_arg(THD *thd, Item *arg1)
+{
+  status_var_increment(current_thd->status_var.feature_json);
+  return new (thd->mem_root) Item_func_json_quote(thd, arg1);
+}
+
+
+Create_func_json_unquote Create_func_json_unquote::s_singleton;
+
+Item*
+Create_func_json_unquote::create_1_arg(THD *thd, Item *arg1)
+{
+  status_var_increment(current_thd->status_var.feature_json);
+  return new (thd->mem_root) Item_func_json_unquote(thd, arg1);
+}
+
+
+Create_func_last_day Create_func_last_day::s_singleton;
+
+Item*
+Create_func_last_day::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_last_day(thd, arg1);
+}
+
+
+Create_func_json_array Create_func_json_array::s_singleton;
+
+Item*
+Create_func_json_array::create_native(THD *thd, LEX_CSTRING *name,
+                                      List<Item> *item_list)
+{
+  Item *func;
+
+  if (item_list != NULL)
+  {
+    func= new (thd->mem_root) Item_func_json_array(thd, *item_list);
+  }
+  else
+  {
+    func= new (thd->mem_root) Item_func_json_array(thd);
+  }
+
+  status_var_increment(current_thd->status_var.feature_json);
+  return func;
+}
+
+
+Create_func_json_array_append Create_func_json_array_append::s_singleton;
+
+Item*
+Create_func_json_array_append::create_native(THD *thd, LEX_CSTRING *name,
+                                                 List<Item> *item_list)
+{
+  Item *func= NULL;
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  if (unlikely(arg_count < 3 || (arg_count & 1) == 0 /*is even*/))
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+  }
+  else
+  {
+    func= new (thd->mem_root) Item_func_json_array_append(thd, *item_list);
+  }
+
+  status_var_increment(current_thd->status_var.feature_json);
+  return func;
+}
+
+
+Create_func_json_array_insert Create_func_json_array_insert::s_singleton;
+
+Item*
+Create_func_json_array_insert::create_native(THD *thd, LEX_CSTRING *name,
+                                                 List<Item> *item_list)
+{
+  Item *func= NULL;
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  if (unlikely(arg_count < 3 || (arg_count & 1) == 0 /*is even*/))
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+  }
+  else
+  {
+    func= new (thd->mem_root) Item_func_json_array_insert(thd, *item_list);
+  }
+
+  status_var_increment(current_thd->status_var.feature_json);
+  return func;
+}
+
+
+Create_func_json_insert Create_func_json_insert::s_singleton;
+
+Item*
+Create_func_json_insert::create_native(THD *thd, LEX_CSTRING *name,
+                                                 List<Item> *item_list)
+{
+  Item *func= NULL;
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  if (unlikely(arg_count < 3 || (arg_count & 1) == 0 /*is even*/))
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+  }
+  else
+  {
+    func= new (thd->mem_root) Item_func_json_insert(true, false,
+                                                    thd, *item_list);
+  }
+
+  status_var_increment(current_thd->status_var.feature_json);
+  return func;
+}
+
+
+Create_func_json_set Create_func_json_set::s_singleton;
+
+Item*
+Create_func_json_set::create_native(THD *thd, LEX_CSTRING *name,
+                                    List<Item> *item_list)
+{
+  Item *func= NULL;
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  if (unlikely(arg_count < 3 || (arg_count & 1) == 0 /*is even*/))
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+  }
+  else
+  {
+    func= new (thd->mem_root) Item_func_json_insert(true, true,
+                                                    thd, *item_list);
+  }
+
+  status_var_increment(current_thd->status_var.feature_json);
+  return func;
+}
+
+
+Create_func_json_replace Create_func_json_replace::s_singleton;
+
+Item*
+Create_func_json_replace::create_native(THD *thd, LEX_CSTRING *name,
+                                        List<Item> *item_list)
+{
+  Item *func= NULL;
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  if (unlikely(arg_count < 3 || (arg_count & 1) == 0 /*is even*/))
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+  }
+  else
+  {
+    func= new (thd->mem_root) Item_func_json_insert(false, true,
+                                                    thd, *item_list);
+  }
+
+  status_var_increment(current_thd->status_var.feature_json);
+  return func;
+}
+
+
+Create_func_json_remove Create_func_json_remove::s_singleton;
+
+Item*
+Create_func_json_remove::create_native(THD *thd, LEX_CSTRING *name,
+                                       List<Item> *item_list)
+{
+  Item *func= NULL;
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  if (unlikely(arg_count < 2 /*json_doc, path [,path]*/))
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+  }
+  else
+  {
+    func= new (thd->mem_root) Item_func_json_remove(thd, *item_list);
+  }
+
+  status_var_increment(current_thd->status_var.feature_json);
+  return func;
+}
+
+
+Create_func_json_object Create_func_json_object::s_singleton;
+
+Item*
+Create_func_json_object::create_native(THD *thd, LEX_CSTRING *name,
+                                       List<Item> *item_list)
+{
+  Item *func;
+  int arg_count;
+
+  if (item_list != NULL)
+  {
+    arg_count= item_list->elements;
+    if (unlikely((arg_count & 1) != 0 /*is odd*/))
+    {
+      my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+      func= NULL;
+    }
+    else
+    {
+      func= new (thd->mem_root) Item_func_json_object(thd, *item_list);
+    }
+  }
+  else
+  {
+    arg_count= 0;
+    func= new (thd->mem_root) Item_func_json_object(thd);
+  }
+
+  status_var_increment(current_thd->status_var.feature_json);
+  return func;
+}
+
+
+Create_func_json_length Create_func_json_length::s_singleton;
+
+Item*
+Create_func_json_length::create_native(THD *thd, LEX_CSTRING *name,
+                                       List<Item> *item_list)
+{
+  Item *func;
+  int arg_count;
+
+  if (unlikely(item_list == NULL ||
+               (arg_count= item_list->elements) == 0))
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    func= NULL;
+  }
+  else
+  {
+    func= new (thd->mem_root) Item_func_json_length(thd, *item_list);
+  }
+
+  status_var_increment(current_thd->status_var.feature_json);
+  return func;
+}
+
+
+Create_func_json_merge Create_func_json_merge::s_singleton;
+
+Item*
+Create_func_json_merge::create_native(THD *thd, LEX_CSTRING *name,
+                                      List<Item> *item_list)
+{
+  Item *func;
+  int arg_count;
+
+  if (unlikely(item_list == NULL ||
+               (arg_count= item_list->elements) < 2)) // json, json
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    func= NULL;
+  }
+  else
+  {
+    func= new (thd->mem_root) Item_func_json_merge(thd, *item_list);
+  }
+
+  status_var_increment(current_thd->status_var.feature_json);
+  return func;
+}
+
+
+Create_func_json_merge_patch Create_func_json_merge_patch::s_singleton;
+
+Item*
+Create_func_json_merge_patch::create_native(THD *thd, LEX_CSTRING *name,
+                                           List<Item> *item_list)
+{
+  Item *func;
+  int arg_count;
+
+  if (item_list == NULL ||
+      (arg_count= item_list->elements) < 2) // json, json
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    func= NULL;
+  }
+  else
+  {
+    func= new (thd->mem_root) Item_func_json_merge_patch(thd, *item_list);
+  }
+
+  return func;
+}
+
+
+Create_func_json_contains Create_func_json_contains::s_singleton;
+
+Item*
+Create_func_json_contains::create_native(THD *thd, LEX_CSTRING *name,
+                                         List<Item> *item_list)
+{
+  Item *func= NULL;
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  if (unlikely(arg_count == 2 || arg_count == 3/* json_doc, val, [path] */))
+  {
+    func= new (thd->mem_root) Item_func_json_contains(thd, *item_list);
+  }
+  else
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+  }
+
+  status_var_increment(current_thd->status_var.feature_json);
+  return func;
+}
+
+
+Create_func_json_keys Create_func_json_keys::s_singleton;
+
+Item*
+Create_func_json_keys::create_native(THD *thd, LEX_CSTRING *name,
+                                     List<Item> *item_list)
+{
+  Item *func= NULL;
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  if (unlikely(arg_count < 1 || arg_count > 2 /* json_doc, [path]...*/))
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+  }
+  else
+  {
+    func= new (thd->mem_root) Item_func_json_keys(thd, *item_list);
+  }
+
+  status_var_increment(current_thd->status_var.feature_json);
+  return func;
+}
+
+
+Create_func_json_contains_path Create_func_json_contains_path::s_singleton;
+
+Item*
+Create_func_json_contains_path::create_native(THD *thd, LEX_CSTRING *name,
+                                                 List<Item> *item_list)
+{
+  Item *func= NULL;
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  if (unlikely(arg_count < 3 /* json_doc, one_or_all, path, [path]...*/))
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+  }
+  else
+  {
+    func= new (thd->mem_root) Item_func_json_contains_path(thd, *item_list);
+  }
+
+  status_var_increment(current_thd->status_var.feature_json);
+  return func;
+}
+
+
+Create_func_json_extract Create_func_json_extract::s_singleton;
+
+Item*
+Create_func_json_extract::create_native(THD *thd, LEX_CSTRING *name,
+                                                 List<Item> *item_list)
+{
+  Item *func= NULL;
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  if (unlikely(arg_count < 2 /* json_doc, path, [path]...*/))
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+  }
+  else
+  {
+    func= new (thd->mem_root) Item_func_json_extract(thd, *item_list);
+  }
+
+  status_var_increment(current_thd->status_var.feature_json);
+  return func;
+}
+
+
+Create_func_json_search Create_func_json_search::s_singleton;
+
+Item*
+Create_func_json_search::create_native(THD *thd, LEX_CSTRING *name,
+                                       List<Item> *item_list)
+{
+  Item *func= NULL;
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  if (unlikely(arg_count < 3 /* json_doc, one_or_all, search_str, [escape_char[, path]...*/))
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+  }
+  else
+  {
+    func= new (thd->mem_root) Item_func_json_search(thd, *item_list);
+  }
+
+  status_var_increment(current_thd->status_var.feature_json);
+  return func;
+}
+
+
+Create_func_last_insert_id Create_func_last_insert_id::s_singleton;
+
+Item*
+Create_func_last_insert_id::create_native(THD *thd, LEX_CSTRING *name,
+                                          List<Item> *item_list)
+{
+  Item *func= NULL;
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  switch (arg_count) {
+  case 0:
+  {
+    func= new (thd->mem_root) Item_func_last_insert_id(thd);
+    thd->lex->safe_to_cache_query= 0;
+    break;
+  }
+  case 1:
+  {
+    Item *param_1= item_list->pop();
+    func= new (thd->mem_root) Item_func_last_insert_id(thd, param_1);
+    thd->lex->safe_to_cache_query= 0;
+    break;
+  }
+  default:
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    break;
+  }
+  }
+
+  return func;
+}
+
+
+Create_func_lcase Create_func_lcase::s_singleton;
+
+Item*
+Create_func_lcase::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_lcase(thd, arg1);
+}
+
+
+Create_func_least Create_func_least::s_singleton;
+
+Item*
+Create_func_least::create_native(THD *thd, LEX_CSTRING *name,
+                                 List<Item> *item_list)
+{
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  if (unlikely(arg_count < 2))
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    return NULL;
+  }
+
+  return new (thd->mem_root) Item_func_min(thd, *item_list);
+}
+
+
+Create_func_length Create_func_length::s_singleton;
+
+Item*
+Create_func_length::create_1_arg(THD *thd, Item *arg1)
+{
+  if (thd->variables.sql_mode & MODE_ORACLE)
+    return new (thd->mem_root) Item_func_char_length(thd, arg1);
+  else
+    return new (thd->mem_root) Item_func_octet_length(thd, arg1);
+}
+
+Create_func_octet_length Create_func_octet_length::s_singleton;
+
+Item*
+Create_func_octet_length::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_octet_length(thd, arg1);
+}
+
+
+#ifndef DBUG_OFF
+Create_func_like_range_min Create_func_like_range_min::s_singleton;
+
+Item*
+Create_func_like_range_min::create_2_arg(THD *thd, Item *arg1, Item *arg2)
+{
+  return new (thd->mem_root) Item_func_like_range_min(thd, arg1, arg2);
+}
+
+
+Create_func_like_range_max Create_func_like_range_max::s_singleton;
+
+Item*
+Create_func_like_range_max::create_2_arg(THD *thd, Item *arg1, Item *arg2)
+{
+  return new (thd->mem_root) Item_func_like_range_max(thd, arg1, arg2);
+}
+#endif
+
+
+Create_func_ln Create_func_ln::s_singleton;
+
+Item*
+Create_func_ln::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_ln(thd, arg1);
+}
+
+
+Create_func_load_file Create_func_load_file::s_singleton;
+
+Item*
+Create_func_load_file::create_1_arg(THD *thd, Item *arg1)
+{
+  DBUG_ENTER("Create_func_load_file::create");
+  thd->lex->set_stmt_unsafe(LEX::BINLOG_STMT_UNSAFE_SYSTEM_FUNCTION);
+  thd->lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
+  DBUG_RETURN(new (thd->mem_root) Item_load_file(thd, arg1));
+}
+
+
+Create_func_locate Create_func_locate::s_singleton;
+
+Item*
+Create_func_locate::create_native(THD *thd, LEX_CSTRING *name,
+                                  List<Item> *item_list)
+{
+  Item *func= NULL;
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  switch (arg_count) {
+  case 2:
+  {
+    Item *param_1= item_list->pop();
+    Item *param_2= item_list->pop();
+    /* Yes, parameters in that order : 2, 1 */
+    func= new (thd->mem_root) Item_func_locate(thd, param_2, param_1);
+    break;
+  }
+  case 3:
+  {
+    Item *param_1= item_list->pop();
+    Item *param_2= item_list->pop();
+    Item *param_3= item_list->pop();
+    /* Yes, parameters in that order : 2, 1, 3 */
+    func= new (thd->mem_root) Item_func_locate(thd, param_2, param_1, param_3);
+    break;
+  }
+  default:
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    break;
+  }
+  }
+
+  return func;
+}
+
+
+Create_func_log Create_func_log::s_singleton;
+
+Item*
+Create_func_log::create_native(THD *thd, LEX_CSTRING *name,
+                               List<Item> *item_list)
+{
+  Item *func= NULL;
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  switch (arg_count) {
+  case 1:
+  {
+    Item *param_1= item_list->pop();
+    func= new (thd->mem_root) Item_func_log(thd, param_1);
+    break;
+  }
+  case 2:
+  {
+    Item *param_1= item_list->pop();
+    Item *param_2= item_list->pop();
+    func= new (thd->mem_root) Item_func_log(thd, param_1, param_2);
+    break;
+  }
+  default:
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    break;
+  }
+  }
+
+  return func;
+}
+
+
+Create_func_log10 Create_func_log10::s_singleton;
+
+Item*
+Create_func_log10::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_log10(thd, arg1);
+}
+
+
+Create_func_log2 Create_func_log2::s_singleton;
+
+Item*
+Create_func_log2::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_log2(thd, arg1);
+}
+
+
+Create_func_lpad Create_func_lpad::s_singleton;
+
+Create_func_lpad_oracle Create_func_lpad_oracle::s_singleton;
+
+Item*
+Create_func_lpad::create_native_std(THD *thd, LEX_CSTRING *name,
+                                    List<Item> *item_list)
+{
+  Item *func= NULL;
+  int arg_count= item_list ? item_list->elements : 0;
+
+  switch (arg_count) {
+  case 2:
+  {
+    Item *param_1= item_list->pop();
+    Item *param_2= item_list->pop();
+    func= new (thd->mem_root) Item_func_lpad(thd, param_1, param_2);
+    break;
+  }
+  case 3:
+  {
+    Item *param_1= item_list->pop();
+    Item *param_2= item_list->pop();
+    Item *param_3= item_list->pop();
+    func= new (thd->mem_root) Item_func_lpad(thd, param_1, param_2, param_3);
+    break;
+  }
+  default:
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    break;
+  }
+
+  return func;
+}
+
+
+Item*
+Create_func_lpad::create_native_oracle(THD *thd, LEX_CSTRING *name,
+                                       List<Item> *item_list)
+{
+  int arg_count= item_list ? item_list->elements : 0;
+  switch (arg_count) {
+  case 2:
+  {
+    Item *param_1= item_list->pop();
+    Item *param_2= item_list->pop();
+    return new (thd->mem_root) Item_func_lpad_oracle(thd, param_1, param_2);
+  }
+  case 3:
+  {
+    Item *param_1= item_list->pop();
+    Item *param_2= item_list->pop();
+    Item *param_3= item_list->pop();
+    return new (thd->mem_root) Item_func_lpad_oracle(thd, param_1,
+                                                     param_2, param_3);
+  }
+  default:
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    break;
+  }
+  return NULL;
+}
+
+
+Create_func_ltrim Create_func_ltrim::s_singleton;
+
+Item*
+Create_func_ltrim::create_1_arg(THD *thd, Item *arg1)
+{
+  return Lex_trim(TRIM_LEADING, arg1).make_item_func_trim(thd);
+}
+
+
+Create_func_ltrim_oracle Create_func_ltrim_oracle::s_singleton;
+
+Item*
+Create_func_ltrim_oracle::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_ltrim_oracle(thd, arg1);
+}
+
+
+Create_func_makedate Create_func_makedate::s_singleton;
+
+Item*
+Create_func_makedate::create_2_arg(THD *thd, Item *arg1, Item *arg2)
+{
+  return new (thd->mem_root) Item_func_makedate(thd, arg1, arg2);
+}
+
+
+Create_func_maketime Create_func_maketime::s_singleton;
+
+Item*
+Create_func_maketime::create_3_arg(THD *thd, Item *arg1, Item *arg2, Item *arg3)
+{
+  return new (thd->mem_root) Item_func_maketime(thd, arg1, arg2, arg3);
+}
+
+
+Create_func_make_set Create_func_make_set::s_singleton;
+
+Item*
+Create_func_make_set::create_native(THD *thd, LEX_CSTRING *name,
+                                    List<Item> *item_list)
+{
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  if (unlikely(arg_count < 2))
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    return NULL;
+  }
+
+  return new (thd->mem_root) Item_func_make_set(thd, *item_list);
+}
+
+
+Create_func_master_pos_wait Create_func_master_pos_wait::s_singleton;
+
+Item*
+Create_func_master_pos_wait::create_native(THD *thd, LEX_CSTRING *name,
+                                           List<Item> *item_list)
+
+{
+  Item *func= NULL;
+  int arg_count= 0;
+
+  thd->lex->set_stmt_unsafe(LEX::BINLOG_STMT_UNSAFE_SYSTEM_FUNCTION);
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  if (unlikely(arg_count < 2 || arg_count > 4))
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    return func;
+  }
+
+  thd->lex->safe_to_cache_query= 0;
+
+  Item *param_1= item_list->pop();
+  Item *param_2= item_list->pop();
+  switch (arg_count) {
+  case 2:
+  {
+    func= new (thd->mem_root) Item_master_pos_wait(thd, param_1, param_2);
+    break;
+  }
+  case 3:
+  {
+    Item *param_3= item_list->pop();
+    func= new (thd->mem_root) Item_master_pos_wait(thd, param_1, param_2, param_3);
+    break;
+  }
+  case 4:
+  {
+    Item *param_3= item_list->pop();
+    Item *param_4= item_list->pop();
+    func= new (thd->mem_root) Item_master_pos_wait(thd, param_1, param_2, param_3,
+                                                   param_4);
+    break;
+  }
+  }
+
+  return func;
+}
+
+
+Create_func_master_gtid_wait Create_func_master_gtid_wait::s_singleton;
+
+Item*
+Create_func_master_gtid_wait::create_native(THD *thd, LEX_CSTRING *name,
+                                            List<Item> *item_list)
+{
+  Item *func= NULL;
+  int arg_count= 0;
+
+  thd->lex->set_stmt_unsafe(LEX::BINLOG_STMT_UNSAFE_SYSTEM_FUNCTION);
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  if (unlikely(arg_count < 1 || arg_count > 2))
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    return func;
+  }
+
+  thd->lex->safe_to_cache_query= 0;
+
+  Item *param_1= item_list->pop();
+  switch (arg_count) {
+  case 1:
+  {
+    func= new (thd->mem_root) Item_master_gtid_wait(thd, param_1);
+    break;
+  }
+  case 2:
+  {
+    Item *param_2= item_list->pop();
+    func= new (thd->mem_root) Item_master_gtid_wait(thd, param_1, param_2);
+    break;
+  }
+  }
+
+  return func;
+}
+
+
+Create_func_md5 Create_func_md5::s_singleton;
+
+Item*
+Create_func_md5::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_md5(thd, arg1);
+}
+
+
+Create_func_monthname Create_func_monthname::s_singleton;
+
+Item*
+Create_func_monthname::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_monthname(thd, arg1);
+}
+
+
+Create_func_name_const Create_func_name_const::s_singleton;
+
+Item*
+Create_func_name_const::create_2_arg(THD *thd, Item *arg1, Item *arg2)
+{
+  if (!arg1->basic_const_item())
+    goto err;
+
+  if (arg2->basic_const_item())
+    return new (thd->mem_root) Item_name_const(thd, arg1, arg2);
+
+  if (arg2->type() == Item::FUNC_ITEM)
+  {
+    Item_func *value_func= (Item_func *) arg2;
+    if (value_func->functype() != Item_func::COLLATE_FUNC &&
+        value_func->functype() != Item_func::NEG_FUNC)
+      goto err;
+
+    if (!value_func->key_item()->basic_const_item())
+      goto err;
+    return new (thd->mem_root) Item_name_const(thd, arg1, arg2);
+  }
+err:
+  my_error(ER_WRONG_ARGUMENTS, MYF(0), "NAME_CONST");
+  return NULL;
+}
+
+
+Create_func_nullif Create_func_nullif::s_singleton;
+
+Item*
+Create_func_nullif::create_2_arg(THD *thd, Item *arg1, Item *arg2)
+{
+  return new (thd->mem_root) Item_func_nullif(thd, arg1, arg2);
+}
+
+
+Create_func_oct Create_func_oct::s_singleton;
+
+Item*
+Create_func_oct::create_1_arg(THD *thd, Item *arg1)
+{
+  Item *i10= new (thd->mem_root) Item_int(thd, (int32) 10,2);
+  Item *i8= new (thd->mem_root) Item_int(thd, (int32) 8,1);
+  return new (thd->mem_root) Item_func_conv(thd, arg1, i10, i8);
+}
+
+
+Create_func_ord Create_func_ord::s_singleton;
+
+Item*
+Create_func_ord::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_ord(thd, arg1);
+}
+
+
+Create_func_period_add Create_func_period_add::s_singleton;
+
+Item*
+Create_func_period_add::create_2_arg(THD *thd, Item *arg1, Item *arg2)
+{
+  return new (thd->mem_root) Item_func_period_add(thd, arg1, arg2);
+}
+
+
+Create_func_period_diff Create_func_period_diff::s_singleton;
+
+Item*
+Create_func_period_diff::create_2_arg(THD *thd, Item *arg1, Item *arg2)
+{
+  return new (thd->mem_root) Item_func_period_diff(thd, arg1, arg2);
+}
+
+
+Create_func_pi Create_func_pi::s_singleton;
+
+Item*
+Create_func_pi::create_builder(THD *thd)
+{
+  return new (thd->mem_root) Item_static_float_func(thd, "pi()", M_PI, 6, 8);
+}
+
+
+Create_func_pow Create_func_pow::s_singleton;
+
+Item*
+Create_func_pow::create_2_arg(THD *thd, Item *arg1, Item *arg2)
+{
+  return new (thd->mem_root) Item_func_pow(thd, arg1, arg2);
+}
+
+
+Create_func_quote Create_func_quote::s_singleton;
+
+Item*
+Create_func_quote::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_quote(thd, arg1);
+}
+
+
+Create_func_regexp_instr Create_func_regexp_instr::s_singleton;
+
+Item*
+Create_func_regexp_instr::create_2_arg(THD *thd, Item *arg1, Item *arg2)
+{
+  return new (thd->mem_root) Item_func_regexp_instr(thd, arg1, arg2);
+}
+
+
+Create_func_regexp_replace Create_func_regexp_replace::s_singleton;
+
+Item*
+Create_func_regexp_replace::create_3_arg(THD *thd, Item *arg1, Item *arg2, Item *arg3)
+{
+  return new (thd->mem_root) Item_func_regexp_replace(thd, arg1, arg2, arg3);
+}
+
+
+Create_func_regexp_substr Create_func_regexp_substr::s_singleton;
+
+Item*
+Create_func_regexp_substr::create_2_arg(THD *thd, Item *arg1, Item *arg2)
+{
+  return new (thd->mem_root) Item_func_regexp_substr(thd, arg1, arg2);
+}
+
+
+Create_func_radians Create_func_radians::s_singleton;
+
+Item*
+Create_func_radians::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_units(thd, (char*) "radians", arg1,
+                                             M_PI/180, 0.0);
+}
+
+
+Create_func_rand Create_func_rand::s_singleton;
+
+Item*
+Create_func_rand::create_native(THD *thd, LEX_CSTRING *name,
+                                List<Item> *item_list)
+{
+  Item *func= NULL;
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  /*
+    When RAND() is binlogged, the seed is binlogged too.  So the
+    sequence of random numbers is the same on a replication slave as
+    on the master.  However, if several RAND() values are inserted
+    into a table, the order in which the rows are modified may differ
+    between master and slave, because the order is undefined.  Hence,
+    the statement is unsafe to log in statement format.
+
+    For normal INSERT's this is howevever safe
+  */
+  if (thd->lex->sql_command != SQLCOM_INSERT)
+    thd->lex->set_stmt_unsafe(LEX::BINLOG_STMT_UNSAFE_SYSTEM_FUNCTION);
+
+  switch (arg_count) {
+  case 0:
+  {
+    func= new (thd->mem_root) Item_func_rand(thd);
+    thd->lex->uncacheable(UNCACHEABLE_RAND);
+    break;
+  }
+  case 1:
+  {
+    Item *param_1= item_list->pop();
+    func= new (thd->mem_root) Item_func_rand(thd, param_1);
+    thd->lex->uncacheable(UNCACHEABLE_RAND);
+    break;
+  }
+  default:
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    break;
+  }
+  }
+
+  return func;
+}
+
+
+Create_func_release_all_locks Create_func_release_all_locks::s_singleton;
+
+Item*
+Create_func_release_all_locks::create_builder(THD *thd)
+{
+  thd->lex->set_stmt_unsafe(LEX::BINLOG_STMT_UNSAFE_SYSTEM_FUNCTION);
+  thd->lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
+  return new (thd->mem_root) Item_func_release_all_locks(thd);
+}
+
+
+Create_func_release_lock Create_func_release_lock::s_singleton;
+
+Item*
+Create_func_release_lock::create_1_arg(THD *thd, Item *arg1)
+{
+  thd->lex->set_stmt_unsafe(LEX::BINLOG_STMT_UNSAFE_SYSTEM_FUNCTION);
+  thd->lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
+  return new (thd->mem_root) Item_func_release_lock(thd, arg1);
+}
+
+
+Create_func_replace_oracle Create_func_replace_oracle::s_singleton;
+
+Item*
+Create_func_replace_oracle::create_3_arg(THD *thd, Item *arg1, Item *arg2,
+                                        Item *arg3)
+{
+  return new (thd->mem_root) Item_func_replace_oracle(thd, arg1, arg2, arg3);
+}
+
+
+Create_func_reverse Create_func_reverse::s_singleton;
+
+Item*
+Create_func_reverse::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_reverse(thd, arg1);
+}
+
+
+Create_func_round Create_func_round::s_singleton;
+
+Item*
+Create_func_round::create_native(THD *thd, LEX_CSTRING *name,
+                                 List<Item> *item_list)
+{
+  Item *func= NULL;
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  switch (arg_count) {
+  case 1:
+  {
+    Item *param_1= item_list->pop();
+    Item *i0= new (thd->mem_root) Item_int(thd, (char*)"0", 0, 1);
+    func= new (thd->mem_root) Item_func_round(thd, param_1, i0, 0);
+    break;
+  }
+  case 2:
+  {
+    Item *param_1= item_list->pop();
+    Item *param_2= item_list->pop();
+    func= new (thd->mem_root) Item_func_round(thd, param_1, param_2, 0);
+    break;
+  }
+  default:
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    break;
+  }
+  }
+
+  return func;
+}
+
+
+Create_func_rpad Create_func_rpad::s_singleton;
+
+Create_func_rpad_oracle Create_func_rpad_oracle::s_singleton;
+
+Item*
+Create_func_rpad::create_native_std(THD *thd, LEX_CSTRING *name,
+                                    List<Item> *item_list)
+{
+  Item *func= NULL;
+  int arg_count= item_list ? item_list->elements : 0;
+
+  switch (arg_count) {
+  case 2:
+  {
+    Item *param_1= item_list->pop();
+    Item *param_2= item_list->pop();
+    func= new (thd->mem_root) Item_func_rpad(thd, param_1, param_2);
+    break;
+  }
+  case 3:
+  {
+    Item *param_1= item_list->pop();
+    Item *param_2= item_list->pop();
+    Item *param_3= item_list->pop();
+    func= new (thd->mem_root) Item_func_rpad(thd, param_1, param_2, param_3);
+    break;
+  }
+  default:
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    break;
+  }
+
+  return func;
+}
+
+
+Item*
+Create_func_rpad::create_native_oracle(THD *thd, LEX_CSTRING *name,
+                                       List<Item> *item_list)
+{
+  int arg_count= item_list ? item_list->elements : 0;
+  switch (arg_count) {
+  case 2:
+  {
+    Item *param_1= item_list->pop();
+    Item *param_2= item_list->pop();
+    return new (thd->mem_root) Item_func_rpad_oracle(thd, param_1, param_2);
+  }
+  case 3:
+  {
+    Item *param_1= item_list->pop();
+    Item *param_2= item_list->pop();
+    Item *param_3= item_list->pop();
+    return new (thd->mem_root) Item_func_rpad_oracle(thd, param_1,
+                                                     param_2, param_3);
+  }
+  default:
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    break;
+  }
+  return NULL;
+}
+
+
+Create_func_rtrim Create_func_rtrim::s_singleton;
+
+Item*
+Create_func_rtrim::create_1_arg(THD *thd, Item *arg1)
+{
+  return Lex_trim(TRIM_TRAILING, arg1).make_item_func_trim(thd);
+}
+
+
+Create_func_rtrim_oracle Create_func_rtrim_oracle::s_singleton;
+
+Item*
+Create_func_rtrim_oracle::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_rtrim_oracle(thd, arg1);
+}
+
+
+Create_func_sec_to_time Create_func_sec_to_time::s_singleton;
+
+Item*
+Create_func_sec_to_time::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_sec_to_time(thd, arg1);
+}
+
+
+Create_func_sha Create_func_sha::s_singleton;
+
+Item*
+Create_func_sha::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_sha(thd, arg1);
+}
+
+
+Create_func_sha2 Create_func_sha2::s_singleton;
+
+Item*
+Create_func_sha2::create_2_arg(THD *thd, Item *arg1, Item *arg2)
+{
+  return new (thd->mem_root) Item_func_sha2(thd, arg1, arg2);
+}
+
+
+Create_func_sign Create_func_sign::s_singleton;
+
+Item*
+Create_func_sign::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_sign(thd, arg1);
+}
+
+
+Create_func_sin Create_func_sin::s_singleton;
+
+Item*
+Create_func_sin::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_sin(thd, arg1);
+}
+
+
+Create_func_sleep Create_func_sleep::s_singleton;
+
+Item*
+Create_func_sleep::create_1_arg(THD *thd, Item *arg1)
+{
+  thd->lex->set_stmt_unsafe(LEX::BINLOG_STMT_UNSAFE_SYSTEM_FUNCTION);
+  thd->lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
+  return new (thd->mem_root) Item_func_sleep(thd, arg1);
+}
+
+
+Create_func_soundex Create_func_soundex::s_singleton;
+
+Item*
+Create_func_soundex::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_soundex(thd, arg1);
+}
+
+
+Create_func_space Create_func_space::s_singleton;
+
+Item*
+Create_func_space::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_space(thd, arg1);
+}
+
+
+Create_func_sqrt Create_func_sqrt::s_singleton;
+
+Item*
+Create_func_sqrt::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_sqrt(thd, arg1);
+}
+
+
+Create_func_str_to_date Create_func_str_to_date::s_singleton;
+
+Item*
+Create_func_str_to_date::create_2_arg(THD *thd, Item *arg1, Item *arg2)
+{
+  return new (thd->mem_root) Item_func_str_to_date(thd, arg1, arg2);
+}
+
+
+Create_func_strcmp Create_func_strcmp::s_singleton;
+
+Item*
+Create_func_strcmp::create_2_arg(THD *thd, Item *arg1, Item *arg2)
+{
+  return new (thd->mem_root) Item_func_strcmp(thd, arg1, arg2);
+}
+
+
+Create_func_substr_index Create_func_substr_index::s_singleton;
+
+Item*
+Create_func_substr_index::create_3_arg(THD *thd, Item *arg1, Item *arg2, Item *arg3)
+{
+  return new (thd->mem_root) Item_func_substr_index(thd, arg1, arg2, arg3);
+}
+
+
+Create_func_substr_oracle Create_func_substr_oracle::s_singleton;
+
+Item*
+Create_func_substr_oracle::create_native(THD *thd, LEX_CSTRING *name,
+                                List<Item> *item_list)
+{
+  Item *func= NULL;
+  int arg_count= item_list ? item_list->elements : 0;
+
+  switch (arg_count) {
+  case 2:
+  {
+    Item *param_1= item_list->pop();
+    Item *param_2= item_list->pop();
+    func= new (thd->mem_root) Item_func_substr_oracle(thd, param_1, param_2);
+    break;
+  }
+  case 3:
+  {
+    Item *param_1= item_list->pop();
+    Item *param_2= item_list->pop();
+    Item *param_3= item_list->pop();
+    func= new (thd->mem_root) Item_func_substr_oracle(thd, param_1, param_2, param_3);
+    break;
+  }
+  default:
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    break;
+  }
+
+  return func;
+}
+
+
+Create_func_subtime Create_func_subtime::s_singleton;
+
+Item*
+Create_func_subtime::create_2_arg(THD *thd, Item *arg1, Item *arg2)
+{
+  return new (thd->mem_root) Item_func_add_time(thd, arg1, arg2, true);
+}
+
+
+Create_func_tan Create_func_tan::s_singleton;
+
+Item*
+Create_func_tan::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_tan(thd, arg1);
+}
+
+
+Create_func_time_format Create_func_time_format::s_singleton;
+
+Item*
+Create_func_time_format::create_2_arg(THD *thd, Item *arg1, Item *arg2)
+{
+  return new (thd->mem_root) Item_func_time_format(thd, arg1, arg2);
+}
+
+
+Create_func_time_to_sec Create_func_time_to_sec::s_singleton;
+
+Item*
+Create_func_time_to_sec::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_time_to_sec(thd, arg1);
+}
+
+
+Create_func_timediff Create_func_timediff::s_singleton;
+
+Item*
+Create_func_timediff::create_2_arg(THD *thd, Item *arg1, Item *arg2)
+{
+  return new (thd->mem_root) Item_func_timediff(thd, arg1, arg2);
+}
+
+
+Create_func_to_base64 Create_func_to_base64::s_singleton;
+
+Item*
+Create_func_to_base64::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_to_base64(thd, arg1);
+}
+
+
+Create_func_to_days Create_func_to_days::s_singleton;
+
+Item*
+Create_func_to_days::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_to_days(thd, arg1);
+}
+
+
+Create_func_to_seconds Create_func_to_seconds::s_singleton;
+
+Item*
+Create_func_to_seconds::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_to_seconds(thd, arg1);
+}
+
+
+Create_func_ucase Create_func_ucase::s_singleton;
+
+Item*
+Create_func_ucase::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_ucase(thd, arg1);
+}
+
+
+Create_func_uncompress Create_func_uncompress::s_singleton;
+
+Item*
+Create_func_uncompress::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_uncompress(thd, arg1);
+}
+
+
+Create_func_uncompressed_length Create_func_uncompressed_length::s_singleton;
+
+Item*
+Create_func_uncompressed_length::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_uncompressed_length(thd, arg1);
+}
+
+
+Create_func_unhex Create_func_unhex::s_singleton;
+
+Item*
+Create_func_unhex::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_unhex(thd, arg1);
+}
+
+
+Create_func_unix_timestamp Create_func_unix_timestamp::s_singleton;
+
+Item*
+Create_func_unix_timestamp::create_native(THD *thd, LEX_CSTRING *name,
+                                          List<Item> *item_list)
+{
+  Item *func= NULL;
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  switch (arg_count) {
+  case 0:
+  {
+    func= new (thd->mem_root) Item_func_unix_timestamp(thd);
+    thd->lex->safe_to_cache_query= 0;
+    break;
+  }
+  case 1:
+  {
+    Item *param_1= item_list->pop();
+    func= new (thd->mem_root) Item_func_unix_timestamp(thd, param_1);
+    break;
+  }
+  default:
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    break;
+  }
+  }
+
+  return func;
+}
+
+
+Create_func_uuid Create_func_uuid::s_singleton;
+
+Item*
+Create_func_uuid::create_builder(THD *thd)
+{
+  DBUG_ENTER("Create_func_uuid::create");
+  thd->lex->set_stmt_unsafe(LEX::BINLOG_STMT_UNSAFE_SYSTEM_FUNCTION);
+  thd->lex->safe_to_cache_query= 0;
+  DBUG_RETURN(new (thd->mem_root) Item_func_uuid(thd));
+}
+
+
+Create_func_uuid_short Create_func_uuid_short::s_singleton;
+
+Item*
+Create_func_uuid_short::create_builder(THD *thd)
+{
+  DBUG_ENTER("Create_func_uuid_short::create");
+  thd->lex->set_stmt_unsafe(LEX::BINLOG_STMT_UNSAFE_SYSTEM_FUNCTION);
+  thd->lex->safe_to_cache_query= 0;
+  DBUG_RETURN(new (thd->mem_root) Item_func_uuid_short(thd));
+}
+
+
+Create_func_version Create_func_version::s_singleton;
+
+Item*
+Create_func_version::create_builder(THD *thd)
+{
+  thd->lex->set_stmt_unsafe(LEX::BINLOG_STMT_UNSAFE_SYSTEM_FUNCTION);
+  static Lex_cstring name(STRING_WITH_LEN("version()"));
+  return new (thd->mem_root) Item_static_string_func(thd, name,
+                                                     Lex_cstring_strlen(server_version),
+                                                     system_charset_info,
+                                                     DERIVATION_SYSCONST);
+}
+
+
+Create_func_weekday Create_func_weekday::s_singleton;
+
+Item*
+Create_func_weekday::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_weekday(thd, arg1, 0);
+}
+
+
+Create_func_weekofyear Create_func_weekofyear::s_singleton;
+
+Item*
+Create_func_weekofyear::create_1_arg(THD *thd, Item *arg1)
+{
+  Item *i1= new (thd->mem_root) Item_int(thd, (char*) "3", 3, 1);
+  return new (thd->mem_root) Item_func_week(thd, arg1, i1);
+}
+
+
+#ifdef WITH_WSREP
+Create_func_wsrep_last_written_gtid
+Create_func_wsrep_last_written_gtid::s_singleton;
+
+Item*
+Create_func_wsrep_last_written_gtid::create_builder(THD *thd)
+{
+  thd->lex->safe_to_cache_query= 0;
+  return new (thd->mem_root) Item_func_wsrep_last_written_gtid(thd);
+}
+
+
+Create_func_wsrep_last_seen_gtid
+Create_func_wsrep_last_seen_gtid::s_singleton;
+
+Item*
+Create_func_wsrep_last_seen_gtid::create_builder(THD *thd)
+{
+  thd->lex->safe_to_cache_query= 0;
+  return new (thd->mem_root) Item_func_wsrep_last_seen_gtid(thd);
+}
+
+
+Create_func_wsrep_sync_wait_upto
+Create_func_wsrep_sync_wait_upto::s_singleton;
+
+Item*
+Create_func_wsrep_sync_wait_upto::create_native(THD *thd,
+                                         LEX_CSTRING *name,
+                                         List<Item> *item_list)
+{
+  Item *func= NULL;
+  int arg_count= 0;
+  Item *param_1, *param_2;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  switch (arg_count)
+  {
+  case 1:
+    param_1= item_list->pop();
+    func= new (thd->mem_root) Item_func_wsrep_sync_wait_upto(thd, param_1);
+    break;
+  case 2:
+    param_1= item_list->pop();
+    param_2= item_list->pop();
+    func= new (thd->mem_root) Item_func_wsrep_sync_wait_upto(thd, param_1, param_2);
+    break;
+  default:
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    break;
+  }
+  thd->lex->safe_to_cache_query= 0;
+  return func;
+}
+#endif /* WITH_WSREP */
+
+Create_func_xml_extractvalue Create_func_xml_extractvalue::s_singleton;
+
+Item*
+Create_func_xml_extractvalue::create_2_arg(THD *thd, Item *arg1, Item *arg2)
+{
+  return new (thd->mem_root) Item_func_xml_extractvalue(thd, arg1, arg2);
+}
+
+
+Create_func_xml_update Create_func_xml_update::s_singleton;
+
+Item*
+Create_func_xml_update::create_3_arg(THD *thd, Item *arg1, Item *arg2, Item *arg3)
+{
+  return new (thd->mem_root) Item_func_xml_update(thd, arg1, arg2, arg3);
+}
+
+
+Create_func_year_week Create_func_year_week::s_singleton;
+
+Item*
+Create_func_year_week::create_native(THD *thd, LEX_CSTRING *name,
+                                     List<Item> *item_list)
+{
+  Item *func= NULL;
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  switch (arg_count) {
+  case 1:
+  {
+    Item *param_1= item_list->pop();
+    Item *i0= new (thd->mem_root) Item_int(thd, (char*) "0", 0, 1);
+    func= new (thd->mem_root) Item_func_yearweek(thd, param_1, i0);
+    break;
+  }
+  case 2:
+  {
+    Item *param_1= item_list->pop();
+    Item *param_2= item_list->pop();
+    func= new (thd->mem_root) Item_func_yearweek(thd, param_1, param_2);
+    break;
+  }
+  default:
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    break;
+  }
+  }
+
+  return func;
+}
+
+#define BUILDER(F) & F::s_singleton
+
+/*
+  MySQL native functions.
+  MAINTAINER:
+  - Keep sorted for human lookup. At runtime, a hash table is used.
+  - do **NOT** conditionally (#ifdef, #ifndef) define a function *NAME*:
+    doing so will cause user code that works against a --without-XYZ binary
+    to fail with name collisions against a --with-XYZ binary.
+    Use something similar to GEOM_BUILDER instead.
+  - keep 1 line per entry, it makes grep | sort easier
+*/
+
+Native_func_registry func_array[] =
+{
+  { { STRING_WITH_LEN("ABS") }, BUILDER(Create_func_abs)},
+  { { STRING_WITH_LEN("ACOS") }, BUILDER(Create_func_acos)},
+  { { STRING_WITH_LEN("ADDTIME") }, BUILDER(Create_func_addtime)},
+  { { STRING_WITH_LEN("AES_DECRYPT") }, BUILDER(Create_func_aes_decrypt)},
+  { { STRING_WITH_LEN("AES_ENCRYPT") }, BUILDER(Create_func_aes_encrypt)},
+  { { STRING_WITH_LEN("ASIN") }, BUILDER(Create_func_asin)},
+  { { STRING_WITH_LEN("ATAN") }, BUILDER(Create_func_atan)},
+  { { STRING_WITH_LEN("ATAN2") }, BUILDER(Create_func_atan)},
+  { { STRING_WITH_LEN("BENCHMARK") }, BUILDER(Create_func_benchmark)},
+  { { STRING_WITH_LEN("BIN") }, BUILDER(Create_func_bin)},
+  { { STRING_WITH_LEN("BINLOG_GTID_POS") }, BUILDER(Create_func_binlog_gtid_pos)},
+  { { STRING_WITH_LEN("BIT_COUNT") }, BUILDER(Create_func_bit_count)},
+  { { STRING_WITH_LEN("BIT_LENGTH") }, BUILDER(Create_func_bit_length)},
+  { { STRING_WITH_LEN("CEIL") }, BUILDER(Create_func_ceiling)},
+  { { STRING_WITH_LEN("CEILING") }, BUILDER(Create_func_ceiling)},
+  { { STRING_WITH_LEN("CHARACTER_LENGTH") }, BUILDER(Create_func_char_length)},
+  { { STRING_WITH_LEN("CHAR_LENGTH") }, BUILDER(Create_func_char_length)},
+  { { STRING_WITH_LEN("CHR") }, BUILDER(Create_func_chr)},
+  { { STRING_WITH_LEN("COERCIBILITY") }, BUILDER(Create_func_coercibility)},
+  { { STRING_WITH_LEN("COLUMN_CHECK") }, BUILDER(Create_func_dyncol_check)},
+  { { STRING_WITH_LEN("COLUMN_EXISTS") }, BUILDER(Create_func_dyncol_exists)},
+  { { STRING_WITH_LEN("COLUMN_LIST") }, BUILDER(Create_func_dyncol_list)},
+  { { STRING_WITH_LEN("COLUMN_JSON") }, BUILDER(Create_func_dyncol_json)},
+  { { STRING_WITH_LEN("COMPRESS") }, BUILDER(Create_func_compress)},
+  { { STRING_WITH_LEN("CONCAT") }, BUILDER(Create_func_concat)},
+  { { STRING_WITH_LEN("CONCAT_OPERATOR_ORACLE") }, BUILDER(Create_func_concat_operator_oracle)},
+  { { STRING_WITH_LEN("CONCAT_WS") }, BUILDER(Create_func_concat_ws)},
+  { { STRING_WITH_LEN("CONNECTION_ID") }, BUILDER(Create_func_connection_id)},
+  { { STRING_WITH_LEN("CONV") }, BUILDER(Create_func_conv)},
+  { { STRING_WITH_LEN("CONVERT_TZ") }, BUILDER(Create_func_convert_tz)},
+  { { STRING_WITH_LEN("COS") }, BUILDER(Create_func_cos)},
+  { { STRING_WITH_LEN("COT") }, BUILDER(Create_func_cot)},
+  { { STRING_WITH_LEN("CRC32") }, BUILDER(Create_func_crc32)},
+  { { STRING_WITH_LEN("DATEDIFF") }, BUILDER(Create_func_datediff)},
+  { { STRING_WITH_LEN("DAYNAME") }, BUILDER(Create_func_dayname)},
+  { { STRING_WITH_LEN("DAYOFMONTH") }, BUILDER(Create_func_dayofmonth)},
+  { { STRING_WITH_LEN("DAYOFWEEK") }, BUILDER(Create_func_dayofweek)},
+  { { STRING_WITH_LEN("DAYOFYEAR") }, BUILDER(Create_func_dayofyear)},
+  { { STRING_WITH_LEN("DEGREES") }, BUILDER(Create_func_degrees)},
+  { { STRING_WITH_LEN("DECODE_HISTOGRAM") }, BUILDER(Create_func_decode_histogram)},
+  { { STRING_WITH_LEN("DECODE_ORACLE") }, BUILDER(Create_func_decode_oracle)},
+  { { STRING_WITH_LEN("DES_DECRYPT") }, BUILDER(Create_func_des_decrypt)},
+  { { STRING_WITH_LEN("DES_ENCRYPT") }, BUILDER(Create_func_des_encrypt)},
+  { { STRING_WITH_LEN("ELT") }, BUILDER(Create_func_elt)},
+  { { STRING_WITH_LEN("ENCODE") }, BUILDER(Create_func_encode)},
+  { { STRING_WITH_LEN("ENCRYPT") }, BUILDER(Create_func_encrypt)},
+  { { STRING_WITH_LEN("EXP") }, BUILDER(Create_func_exp)},
+  { { STRING_WITH_LEN("EXPORT_SET") }, BUILDER(Create_func_export_set)},
+  { { STRING_WITH_LEN("EXTRACTVALUE") }, BUILDER(Create_func_xml_extractvalue)},
+  { { STRING_WITH_LEN("FIELD") }, BUILDER(Create_func_field)},
+  { { STRING_WITH_LEN("FIND_IN_SET") }, BUILDER(Create_func_find_in_set)},
+  { { STRING_WITH_LEN("FLOOR") }, BUILDER(Create_func_floor)},
+  { { STRING_WITH_LEN("FORMAT") }, BUILDER(Create_func_format)},
+  { { STRING_WITH_LEN("FOUND_ROWS") }, BUILDER(Create_func_found_rows)},
+  { { STRING_WITH_LEN("FROM_BASE64") }, BUILDER(Create_func_from_base64)},
+  { { STRING_WITH_LEN("FROM_DAYS") }, BUILDER(Create_func_from_days)},
+  { { STRING_WITH_LEN("FROM_UNIXTIME") }, BUILDER(Create_func_from_unixtime)},
+  { { STRING_WITH_LEN("GET_LOCK") }, BUILDER(Create_func_get_lock)},
+  { { STRING_WITH_LEN("GREATEST") }, BUILDER(Create_func_greatest)},
+  { { STRING_WITH_LEN("HEX") }, BUILDER(Create_func_hex)},
+  { { STRING_WITH_LEN("IFNULL") }, BUILDER(Create_func_ifnull)},
+  { { STRING_WITH_LEN("INSTR") }, BUILDER(Create_func_instr)},
+  { { STRING_WITH_LEN("ISNULL") }, BUILDER(Create_func_isnull)},
+  { { STRING_WITH_LEN("IS_FREE_LOCK") }, BUILDER(Create_func_is_free_lock)},
+  { { STRING_WITH_LEN("IS_USED_LOCK") }, BUILDER(Create_func_is_used_lock)},
+  { { STRING_WITH_LEN("JSON_ARRAY") }, BUILDER(Create_func_json_array)},
+  { { STRING_WITH_LEN("JSON_ARRAY_APPEND") }, BUILDER(Create_func_json_array_append)},
+  { { STRING_WITH_LEN("JSON_ARRAY_INSERT") }, BUILDER(Create_func_json_array_insert)},
+  { { STRING_WITH_LEN("JSON_COMPACT") }, BUILDER(Create_func_json_compact)},
+  { { STRING_WITH_LEN("JSON_CONTAINS") }, BUILDER(Create_func_json_contains)},
+  { { STRING_WITH_LEN("JSON_CONTAINS_PATH") }, BUILDER(Create_func_json_contains_path)},
+  { { STRING_WITH_LEN("JSON_DEPTH") }, BUILDER(Create_func_json_depth)},
+  { { STRING_WITH_LEN("JSON_DETAILED") }, BUILDER(Create_func_json_detailed)},
+  { { STRING_WITH_LEN("JSON_EXISTS") }, BUILDER(Create_func_json_exists)},
+  { { STRING_WITH_LEN("JSON_EXTRACT") }, BUILDER(Create_func_json_extract)},
+  { { STRING_WITH_LEN("JSON_INSERT") }, BUILDER(Create_func_json_insert)},
+  { { STRING_WITH_LEN("JSON_KEYS") }, BUILDER(Create_func_json_keys)},
+  { { STRING_WITH_LEN("JSON_LENGTH") }, BUILDER(Create_func_json_length)},
+  { { STRING_WITH_LEN("JSON_LOOSE") }, BUILDER(Create_func_json_loose)},
+  { { STRING_WITH_LEN("JSON_MERGE") }, BUILDER(Create_func_json_merge)},
+  { { STRING_WITH_LEN("JSON_MERGE_PATCH") }, BUILDER(Create_func_json_merge_patch)},
+  { { STRING_WITH_LEN("JSON_MERGE_PRESERVE") }, BUILDER(Create_func_json_merge)},
+  { { STRING_WITH_LEN("JSON_QUERY") }, BUILDER(Create_func_json_query)},
+  { { STRING_WITH_LEN("JSON_QUOTE") }, BUILDER(Create_func_json_quote)},
+  { { STRING_WITH_LEN("JSON_OBJECT") }, BUILDER(Create_func_json_object)},
+  { { STRING_WITH_LEN("JSON_REMOVE") }, BUILDER(Create_func_json_remove)},
+  { { STRING_WITH_LEN("JSON_REPLACE") }, BUILDER(Create_func_json_replace)},
+  { { STRING_WITH_LEN("JSON_SET") }, BUILDER(Create_func_json_set)},
+  { { STRING_WITH_LEN("JSON_SEARCH") }, BUILDER(Create_func_json_search)},
+  { { STRING_WITH_LEN("JSON_TYPE") }, BUILDER(Create_func_json_type)},
+  { { STRING_WITH_LEN("JSON_UNQUOTE") }, BUILDER(Create_func_json_unquote)},
+  { { STRING_WITH_LEN("JSON_VALID") }, BUILDER(Create_func_json_valid)},
+  { { STRING_WITH_LEN("JSON_VALUE") }, BUILDER(Create_func_json_value)},
+  { { STRING_WITH_LEN("LAST_DAY") }, BUILDER(Create_func_last_day)},
+  { { STRING_WITH_LEN("LAST_INSERT_ID") }, BUILDER(Create_func_last_insert_id)},
+  { { STRING_WITH_LEN("LCASE") }, BUILDER(Create_func_lcase)},
+  { { STRING_WITH_LEN("LEAST") }, BUILDER(Create_func_least)},
+  { { STRING_WITH_LEN("LENGTH") }, BUILDER(Create_func_length)},
+  { { STRING_WITH_LEN("LENGTHB") }, BUILDER(Create_func_octet_length)},
+#ifndef DBUG_OFF
+  { { STRING_WITH_LEN("LIKE_RANGE_MIN") }, BUILDER(Create_func_like_range_min)},
+  { { STRING_WITH_LEN("LIKE_RANGE_MAX") }, BUILDER(Create_func_like_range_max)},
+#endif
+  { { STRING_WITH_LEN("LN") }, BUILDER(Create_func_ln)},
+  { { STRING_WITH_LEN("LOAD_FILE") }, BUILDER(Create_func_load_file)},
+  { { STRING_WITH_LEN("LOCATE") }, BUILDER(Create_func_locate)},
+  { { STRING_WITH_LEN("LOG") }, BUILDER(Create_func_log)},
+  { { STRING_WITH_LEN("LOG10") }, BUILDER(Create_func_log10)},
+  { { STRING_WITH_LEN("LOG2") }, BUILDER(Create_func_log2)},
+  { { STRING_WITH_LEN("LOWER") }, BUILDER(Create_func_lcase)},
+  { { STRING_WITH_LEN("LPAD") }, BUILDER(Create_func_lpad)},
+  { { STRING_WITH_LEN("LPAD_ORACLE") }, BUILDER(Create_func_lpad_oracle)},
+  { { STRING_WITH_LEN("LTRIM") }, BUILDER(Create_func_ltrim)},
+  { { STRING_WITH_LEN("LTRIM_ORACLE") }, BUILDER(Create_func_ltrim_oracle)},
+  { { STRING_WITH_LEN("MAKEDATE") }, BUILDER(Create_func_makedate)},
+  { { STRING_WITH_LEN("MAKETIME") }, BUILDER(Create_func_maketime)},
+  { { STRING_WITH_LEN("MAKE_SET") }, BUILDER(Create_func_make_set)},
+  { { STRING_WITH_LEN("MASTER_GTID_WAIT") }, BUILDER(Create_func_master_gtid_wait)},
+  { { STRING_WITH_LEN("MASTER_POS_WAIT") }, BUILDER(Create_func_master_pos_wait)},
+  { { STRING_WITH_LEN("MD5") }, BUILDER(Create_func_md5)},
+  { { STRING_WITH_LEN("MONTHNAME") }, BUILDER(Create_func_monthname)},
+  { { STRING_WITH_LEN("NAME_CONST") }, BUILDER(Create_func_name_const)},
+  { { STRING_WITH_LEN("NVL") }, BUILDER(Create_func_ifnull)},
+  { { STRING_WITH_LEN("NVL2") }, BUILDER(Create_func_nvl2)},
+  { { STRING_WITH_LEN("NULLIF") }, BUILDER(Create_func_nullif)},
+  { { STRING_WITH_LEN("OCT") }, BUILDER(Create_func_oct)},
+  { { STRING_WITH_LEN("OCTET_LENGTH") }, BUILDER(Create_func_octet_length)},
+  { { STRING_WITH_LEN("ORD") }, BUILDER(Create_func_ord)},
+  { { STRING_WITH_LEN("PERIOD_ADD") }, BUILDER(Create_func_period_add)},
+  { { STRING_WITH_LEN("PERIOD_DIFF") }, BUILDER(Create_func_period_diff)},
+  { { STRING_WITH_LEN("PI") }, BUILDER(Create_func_pi)},
+  { { STRING_WITH_LEN("POW") }, BUILDER(Create_func_pow)},
+  { { STRING_WITH_LEN("POWER") }, BUILDER(Create_func_pow)},
+  { { STRING_WITH_LEN("QUOTE") }, BUILDER(Create_func_quote)},
+  { { STRING_WITH_LEN("REGEXP_INSTR") }, BUILDER(Create_func_regexp_instr)},
+  { { STRING_WITH_LEN("REGEXP_REPLACE") }, BUILDER(Create_func_regexp_replace)},
+  { { STRING_WITH_LEN("REGEXP_SUBSTR") }, BUILDER(Create_func_regexp_substr)},
+  { { STRING_WITH_LEN("RADIANS") }, BUILDER(Create_func_radians)},
+  { { STRING_WITH_LEN("RAND") }, BUILDER(Create_func_rand)},
+  { { STRING_WITH_LEN("RELEASE_ALL_LOCKS") },
+      BUILDER(Create_func_release_all_locks)},
+  { { STRING_WITH_LEN("RELEASE_LOCK") }, BUILDER(Create_func_release_lock)},
+  { { STRING_WITH_LEN("REPLACE_ORACLE") },
+      BUILDER(Create_func_replace_oracle)},
+  { { STRING_WITH_LEN("REVERSE") }, BUILDER(Create_func_reverse)},
+  { { STRING_WITH_LEN("ROUND") }, BUILDER(Create_func_round)},
+  { { STRING_WITH_LEN("RPAD") }, BUILDER(Create_func_rpad)},
+  { { STRING_WITH_LEN("RPAD_ORACLE") }, BUILDER(Create_func_rpad_oracle)},
+  { { STRING_WITH_LEN("RTRIM") }, BUILDER(Create_func_rtrim)},
+  { { STRING_WITH_LEN("RTRIM_ORACLE") }, BUILDER(Create_func_rtrim_oracle)},
+  { { STRING_WITH_LEN("SEC_TO_TIME") }, BUILDER(Create_func_sec_to_time)},
+  { { STRING_WITH_LEN("SHA") }, BUILDER(Create_func_sha)},
+  { { STRING_WITH_LEN("SHA1") }, BUILDER(Create_func_sha)},
+  { { STRING_WITH_LEN("SHA2") }, BUILDER(Create_func_sha2)},
+  { { STRING_WITH_LEN("SIGN") }, BUILDER(Create_func_sign)},
+  { { STRING_WITH_LEN("SIN") }, BUILDER(Create_func_sin)},
+  { { STRING_WITH_LEN("SLEEP") }, BUILDER(Create_func_sleep)},
+  { { STRING_WITH_LEN("SOUNDEX") }, BUILDER(Create_func_soundex)},
+  { { STRING_WITH_LEN("SPACE") }, BUILDER(Create_func_space)},
+  { { STRING_WITH_LEN("SQRT") }, BUILDER(Create_func_sqrt)},
+  { { STRING_WITH_LEN("STRCMP") }, BUILDER(Create_func_strcmp)},
+  { { STRING_WITH_LEN("STR_TO_DATE") }, BUILDER(Create_func_str_to_date)},
+  { { STRING_WITH_LEN("SUBSTR_ORACLE") },
+      BUILDER(Create_func_substr_oracle)},
+  { { STRING_WITH_LEN("SUBSTRING_INDEX") }, BUILDER(Create_func_substr_index)},
+  { { STRING_WITH_LEN("SUBTIME") }, BUILDER(Create_func_subtime)},
+  { { STRING_WITH_LEN("TAN") }, BUILDER(Create_func_tan)},
+  { { STRING_WITH_LEN("TIMEDIFF") }, BUILDER(Create_func_timediff)},
+  { { STRING_WITH_LEN("TIME_FORMAT") }, BUILDER(Create_func_time_format)},
+  { { STRING_WITH_LEN("TIME_TO_SEC") }, BUILDER(Create_func_time_to_sec)},
+  { { STRING_WITH_LEN("TO_BASE64") }, BUILDER(Create_func_to_base64)},
+  { { STRING_WITH_LEN("TO_DAYS") }, BUILDER(Create_func_to_days)},
+  { { STRING_WITH_LEN("TO_SECONDS") }, BUILDER(Create_func_to_seconds)},
+  { { STRING_WITH_LEN("UCASE") }, BUILDER(Create_func_ucase)},
+  { { STRING_WITH_LEN("UNCOMPRESS") }, BUILDER(Create_func_uncompress)},
+  { { STRING_WITH_LEN("UNCOMPRESSED_LENGTH") }, BUILDER(Create_func_uncompressed_length)},
+  { { STRING_WITH_LEN("UNHEX") }, BUILDER(Create_func_unhex)},
+  { { STRING_WITH_LEN("UNIX_TIMESTAMP") }, BUILDER(Create_func_unix_timestamp)},
+  { { STRING_WITH_LEN("UPDATEXML") }, BUILDER(Create_func_xml_update)},
+  { { STRING_WITH_LEN("UPPER") }, BUILDER(Create_func_ucase)},
+  { { STRING_WITH_LEN("UUID") }, BUILDER(Create_func_uuid)},
+  { { STRING_WITH_LEN("UUID_SHORT") }, BUILDER(Create_func_uuid_short)},
+  { { STRING_WITH_LEN("VERSION") }, BUILDER(Create_func_version)},
+  { { STRING_WITH_LEN("WEEKDAY") }, BUILDER(Create_func_weekday)},
+  { { STRING_WITH_LEN("WEEKOFYEAR") }, BUILDER(Create_func_weekofyear)},
+#ifdef WITH_WSREP
+  { { STRING_WITH_LEN("WSREP_LAST_WRITTEN_GTID") }, BUILDER(Create_func_wsrep_last_written_gtid)},
+  { { STRING_WITH_LEN("WSREP_LAST_SEEN_GTID") }, BUILDER(Create_func_wsrep_last_seen_gtid)},
+  { { STRING_WITH_LEN("WSREP_SYNC_WAIT_UPTO_GTID") }, BUILDER(Create_func_wsrep_sync_wait_upto)},
+#endif /* WITH_WSREP */
+  { { STRING_WITH_LEN("YEARWEEK") }, BUILDER(Create_func_year_week)}
+};
+
+Native_func_registry_array
+  native_func_registry_array(func_array, array_elements(func_array));
+
+static HASH native_functions_hash;
+
+/*
+  Load the hash table for native functions.
+  Note: this code is not thread safe, and is intended to be used at server
+  startup only (before going multi-threaded)
+*/
+
+int item_create_init()
+{
+  DBUG_ENTER("item_create_init");
+  size_t count= native_func_registry_array.count();
+#ifdef HAVE_SPATIAL
+  count+= native_func_registry_array_geom.count();
+#endif
+  if (my_hash_init(key_memory_native_functions, & native_functions_hash,
+                   system_charset_info, (ulong) count, 0, 0, (my_hash_get_key)
+                   get_native_fct_hash_key, NULL, MYF(0)))
+    DBUG_RETURN(1);
+
+  if (native_func_registry_array.append_to_hash(&native_functions_hash))
+    DBUG_RETURN(1);
+
+#ifdef HAVE_SPATIAL
+  if (native_func_registry_array_geom.append_to_hash(&native_functions_hash))
+    DBUG_RETURN(1);
+#endif
+
+#ifndef DBUG_OFF
+  for (uint i=0 ; i < native_functions_hash.records ; i++)
+  {
+    Native_func_registry *func;
+    func= (Native_func_registry*) my_hash_element(& native_functions_hash, i);
+    DBUG_PRINT("info", ("native function: %s  length: %u",
+                        func->name.str, (uint) func->name.length));
+  }
+#endif
+
+  DBUG_RETURN(0);
+}
+
+
+/*
+  This function is used (dangerously) by plugin/versioning/versioning.cc
+  TODO: MDEV-20842 Wrap SQL functions defined in
+        plugin/versioning/versioning.cc into MariaDB_FUNCTION_PLUGIN
+*/
+int item_create_append(Native_func_registry array[])
+{
+  Native_func_registry *func;
+
+  DBUG_ENTER("item_create_append");
+
+  for (func= array; func->builder != NULL; func++)
+  {
+    if (my_hash_insert(& native_functions_hash, (uchar*) func))
+      DBUG_RETURN(1);
+  }
+
+  DBUG_RETURN(0);
+}
+
+int item_create_remove(Native_func_registry array[])
+{
+  Native_func_registry *func;
+
+  DBUG_ENTER("item_create_remove");
+
+  for (func= array; func->builder != NULL; func++)
+  {
+    if (my_hash_delete(& native_functions_hash, (uchar*) func))
+      DBUG_RETURN(1);
+  }
+
+  DBUG_RETURN(0);
+}
+
+/*
+  Empty the hash table for native functions.
+  Note: this code is not thread safe, and is intended to be used at server
+  shutdown only (after thread requests have been executed).
+*/
+
+void item_create_cleanup()
+{
+  DBUG_ENTER("item_create_cleanup");
+  my_hash_free(& native_functions_hash);
+  DBUG_VOID_RETURN;
+}
+
+
+static Create_func *
+function_plugin_find_native_function_builder(THD *thd, const LEX_CSTRING &name)
+{
+  plugin_ref plugin;
+  if ((plugin= my_plugin_lock_by_name(thd, &name, MariaDB_FUNCTION_PLUGIN)))
+  {
+    Create_func *builder=
+      reinterpret_cast<Plugin_function*>(plugin_decl(plugin)->info)->
+        create_func();
+    // TODO: MDEV-20846 Add proper unlocking for MariaDB_FUNCTION_PLUGIN
+    plugin_unlock(thd, plugin);
+    return builder;
+  }
+  return NULL;
+}
+
+
+Create_func *
+find_native_function_builder(THD *thd, const LEX_CSTRING *name)
+{
+  Native_func_registry *func;
+  Create_func *builder= NULL;
+
+  /* Thread safe */
+  func= (Native_func_registry*) my_hash_search(&native_functions_hash,
+                                               (uchar*) name->str,
+                                               name->length);
+
+  if (func && (builder= func->builder))
+    return builder;
+
+  if ((builder= function_plugin_find_native_function_builder(thd, *name)))
+    return builder;
+
+  return NULL;
+}
+
+Create_qfunc *
+find_qualified_function_builder(THD *thd)
+{
+  return & Create_sp_func::s_singleton;
+}
+
+
+static List<Item> *create_func_dyncol_prepare(THD *thd,
+                                              DYNCALL_CREATE_DEF **dfs,
+                                              List<DYNCALL_CREATE_DEF> &list)
+{
+  DYNCALL_CREATE_DEF *def;
+  List_iterator_fast<DYNCALL_CREATE_DEF> li(list);
+  List<Item> *args= new (thd->mem_root) List<Item>;
+
+  *dfs= (DYNCALL_CREATE_DEF *)alloc_root(thd->mem_root,
+                                         sizeof(DYNCALL_CREATE_DEF) *
+                                         list.elements);
+
+  if (!args || !*dfs)
+    return NULL;
+
+  for (uint i= 0; (def= li++) ;)
+  {
+    dfs[0][i++]= *def;
+    args->push_back(def->key, thd->mem_root);
+    args->push_back(def->value, thd->mem_root);
+  }
+  return args;
+}
+
+Item *create_func_dyncol_create(THD *thd, List<DYNCALL_CREATE_DEF> &list)
+{
+  List<Item> *args;
+  DYNCALL_CREATE_DEF *dfs;
+  if (!(args= create_func_dyncol_prepare(thd, &dfs, list)))
+    return NULL;
+
+  return new (thd->mem_root) Item_func_dyncol_create(thd, *args, dfs);
+}
+
+Item *create_func_dyncol_add(THD *thd, Item *str,
+                             List<DYNCALL_CREATE_DEF> &list)
+{
+  List<Item> *args;
+  DYNCALL_CREATE_DEF *dfs;
+
+  if (!(args= create_func_dyncol_prepare(thd, &dfs, list)))
+    return NULL;
+
+  args->push_back(str, thd->mem_root);
+
+  return new (thd->mem_root) Item_func_dyncol_add(thd, *args, dfs);
+}
+
+
+
+Item *create_func_dyncol_delete(THD *thd, Item *str, List<Item> &nums)
+{
+  DYNCALL_CREATE_DEF *dfs;
+  Item *key;
+  List_iterator_fast<Item> it(nums);
+  List<Item> *args= new (thd->mem_root) List<Item>;
+
+  dfs= (DYNCALL_CREATE_DEF *)alloc_root(thd->mem_root,
+                                        sizeof(DYNCALL_CREATE_DEF) *
+                                        nums.elements);
+  if (!args || !dfs)
+    return NULL;
+
+  for (uint i= 0; (key= it++); i++)
+  {
+    dfs[i].key= key;
+    dfs[i].value= new (thd->mem_root) Item_null(thd);
+    dfs[i].type= DYN_COL_INT;
+    args->push_back(dfs[i].key, thd->mem_root);
+    args->push_back(dfs[i].value, thd->mem_root);
+  }
+
+  args->push_back(str, thd->mem_root);
+
+  return new (thd->mem_root) Item_func_dyncol_add(thd, *args, dfs);
+}
+
+
+Item *create_func_dyncol_get(THD *thd,  Item *str, Item *num,
+                             const Type_handler *handler,
+                             const char *c_len, const char *c_dec,
+                             CHARSET_INFO *cs)
+{
+  Item *res;
+
+  if (likely(!(res= new (thd->mem_root) Item_dyncol_get(thd, str, num))))
+    return res;                                 // Return NULL
+  return handler->create_typecast_item(thd, res,
+                                       Type_cast_attributes(c_len, c_dec, cs));
+}