Adding upstream version 1:10.11.6.upstream/1%10.11.6upstream

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

1 files changed, 1683 insertions, 0 deletions

diff --git a/storage/spider/spd_db_mysql.h b/storage/spider/spd_db_mysql.h
new file mode 100644
index 00000000..ec72a97f
--- /dev/null
+++ b/storage/spider/spd_db_mysql.h
@@ -0,0 +1,1683 @@
+/* Copyright (C) 2012-2018 Kentoku Shiba
+
+  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 Street, Fifth Floor, Boston, MA 02110-1335 USA */
+
+class spider_db_mbase_util: public spider_db_util
+{
+public:
+  spider_db_mbase_util();
+  virtual ~spider_db_mbase_util();
+  int append_name(
+    spider_string *str,
+    const char *name,
+    uint name_length
+  ) override;
+  int append_name_with_charset(
+    spider_string *str,
+    const char *name,
+    uint name_length,
+    CHARSET_INFO *name_charset
+  ) override;
+  int append_escaped_name(
+    spider_string *str,
+    const char *name,
+    uint name_length
+  ) override;
+  int append_escaped_name_with_charset(
+    spider_string *str,
+    const char *name,
+    uint name_length,
+    CHARSET_INFO *name_charset
+  ) override;
+  bool is_name_quote(
+    const char head_code
+  ) override;
+  int append_escaped_name_quote(
+    spider_string *str
+  ) override;
+  int append_column_value(ha_spider *spider, spider_string *str, Field *field,
+                          const uchar *new_ptr, bool is_like,
+                          CHARSET_INFO *access_charset) override;
+  int append_from_with_alias(
+    spider_string *str,
+    const char **table_names,
+    uint *table_name_lengths,
+    const char **table_aliases,
+    uint *table_alias_lengths,
+    uint table_count,
+    int *table_name_pos,
+    bool over_write
+  );
+  int append_trx_isolation(
+    spider_string *str,
+    int trx_isolation
+  ) override;
+  int append_autocommit(
+    spider_string *str,
+    bool autocommit
+  ) override;
+  int append_sql_log_off(
+    spider_string *str,
+    bool sql_log_off
+  ) override;
+  int append_wait_timeout(
+    spider_string *str,
+    int wait_timeout
+  ) override;
+  virtual int append_sql_mode_internal(
+    spider_string *str,
+    sql_mode_t sql_mode
+  );
+  int append_sql_mode(
+    spider_string *str,
+    sql_mode_t sql_mode
+  ) override;
+  int append_time_zone(
+    spider_string *str,
+    Time_zone *time_zone
+  ) override;
+  int append_loop_check(
+    spider_string *str,
+    SPIDER_CONN *conn
+  ) override;
+  int append_start_transaction(
+    spider_string *str
+  ) override;
+  int append_xa_start(
+    spider_string *str,
+    XID *xid
+  ) override;
+  int append_lock_table_head(
+    spider_string *str
+  ) override;
+  int append_lock_table_body(
+    spider_string *str,
+    const char *db_name,
+    uint db_name_length,
+    CHARSET_INFO *db_name_charset,
+    const char *table_name,
+    uint table_name_length,
+    CHARSET_INFO *table_name_charset,
+    int lock_type
+  ) override;
+  int append_lock_table_tail(
+    spider_string *str
+  ) override;
+  int append_unlock_table(
+    spider_string *str
+  ) override;
+  int open_item_func(
+    Item_func *item_func,
+    ha_spider *spider,
+    spider_string *str,
+    const char *alias,
+    uint alias_length,
+    bool use_fields,
+    spider_fields *fields
+  ) override;
+protected:
+  int check_item_func(
+    Item_func *item_func,
+    ha_spider *spider,
+    const char *alias,
+    uint alias_length,
+    bool use_fields,
+    spider_fields *fields
+  );
+  int print_item_func(
+    Item_func *item_func,
+    ha_spider *spider,
+    spider_string *str,
+    const char *alias,
+    uint alias_length,
+    bool use_fields,
+    spider_fields *fields
+  );
+public:
+  int open_item_sum_func(
+    Item_sum *item_sum,
+    ha_spider *spider,
+    spider_string *str,
+    const char *alias,
+    uint alias_length,
+    bool use_fields,
+    spider_fields *fields
+  ) override;
+  int append_escaped_util(
+    spider_string *to,
+    String *from
+  ) override;
+  int append_table(
+    ha_spider *spider,
+    spider_fields *fields,
+    spider_string *str,
+    TABLE_LIST *table_list,
+    TABLE_LIST **used_table_list,
+    uint *current_pos,
+    TABLE_LIST **cond_table_list_ptr,
+    bool top_down,
+    bool first
+  );
+  int append_tables_top_down(
+    ha_spider *spider,
+    spider_fields *fields,
+    spider_string *str,
+    TABLE_LIST *table_list,
+    TABLE_LIST **used_table_list,
+    uint *current_pos,
+    TABLE_LIST **cond_table_list_ptr
+  );
+  int append_tables_top_down_check(
+    TABLE_LIST *table_list,
+    TABLE_LIST **used_table_list,
+    uint *current_pos
+  );
+  int append_embedding_tables(
+    ha_spider *spider,
+    spider_fields *fields,
+    spider_string *str,
+    TABLE_LIST *table_list,
+    TABLE_LIST **used_table_list,
+    uint *current_pos,
+    TABLE_LIST **cond_table_list_ptr
+  );
+  int append_from_and_tables(
+    ha_spider *spider,
+    spider_fields *fields,
+    spider_string *str,
+    TABLE_LIST *table_list,
+    uint table_count
+  ) override;
+  int reappend_tables(
+    spider_fields *fields,
+    SPIDER_LINK_IDX_CHAIN *link_idx_chain,
+    spider_string *str
+  ) override;
+  int append_where(
+    spider_string *str
+  ) override;
+  int append_having(
+    spider_string *str
+  ) override;
+  bool tables_on_different_db_are_joinable() override;
+  bool socket_has_default_value() override;
+  bool database_has_default_value() override;
+  bool default_file_has_default_value() override;
+  bool host_has_default_value() override;
+  bool port_has_default_value() override;
+  bool append_charset_name_before_string() override;
+};
+
+class spider_db_mysql_util: public spider_db_mbase_util
+{
+public:
+  spider_db_mysql_util();
+  ~spider_db_mysql_util();
+  int append_column_value(
+    ha_spider *spider,
+    spider_string *str,
+    Field *field,
+    const uchar *new_ptr,
+    bool is_like,
+    CHARSET_INFO *access_charset
+  ) override;
+};
+
+class spider_db_mariadb_util: public spider_db_mbase_util
+{
+public:
+  spider_db_mariadb_util();
+  ~spider_db_mariadb_util();
+  int append_sql_mode_internal(
+    spider_string *str,
+    sql_mode_t sql_mode
+  ) override;
+  int append_column_value(
+    ha_spider *spider,
+    spider_string *str,
+    Field *field,
+    const uchar *new_ptr,
+    bool is_like,
+    CHARSET_INFO *access_charset
+  ) override;
+};
+
+class spider_db_mbase_row: public spider_db_row
+{
+public:
+  MYSQL_ROW           row;
+  MYSQL_ROW           row_first;
+  ulong               *lengths;
+  ulong               *lengths_first;
+  uint                field_count;
+  uint                record_size;
+  bool                cloned;
+  spider_db_mbase_row(
+    uint dbton_id
+  );
+  virtual ~spider_db_mbase_row();
+  int store_to_field(
+    Field *field,
+    CHARSET_INFO *access_charset
+  );
+  int append_to_str(
+    spider_string *str
+  );
+  int append_escaped_to_str(
+    spider_string *str,
+    uint dbton_id
+  );
+  void first();
+  void next();
+  bool is_null();
+  int val_int();
+  double val_real();
+  my_decimal *val_decimal(
+    my_decimal *decimal_value,
+    CHARSET_INFO *access_charset
+  );
+  SPIDER_DB_ROW *clone();
+  int store_to_tmp_table(
+    TABLE *tmp_table,
+    spider_string *str
+  );
+  uint get_byte_size();
+};
+
+class spider_db_mysql_row: public spider_db_mbase_row
+{
+public:
+  spider_db_mysql_row();
+  ~spider_db_mysql_row();
+};
+
+class spider_db_mariadb_row: public spider_db_mbase_row
+{
+public:
+  spider_db_mariadb_row();
+  ~spider_db_mariadb_row();
+};
+
+class spider_db_mbase_result: public spider_db_result
+{
+public:
+  MYSQL_RES           *db_result;
+  spider_db_mbase_row row;
+  MYSQL_ROW_OFFSET    first_row;
+  int                 store_error_num;
+  spider_db_mbase_result(
+    SPIDER_DB_CONN *in_db_conn
+  );
+  virtual ~spider_db_mbase_result();
+  bool has_result();
+  void free_result();
+  SPIDER_DB_ROW *current_row();
+  SPIDER_DB_ROW *fetch_row();
+  SPIDER_DB_ROW *fetch_row_from_result_buffer(
+    spider_db_result_buffer *spider_res_buf
+  );
+  SPIDER_DB_ROW *fetch_row_from_tmp_table(
+    TABLE *tmp_table
+  );
+  int fetch_table_status(
+    int mode,
+    ha_statistics &stat
+  );
+  int fetch_simple_action(
+    uint simple_action,
+    uint position,
+    void *param
+  );
+  int fetch_table_records(
+    int mode,
+    ha_rows &records
+  );
+  int fetch_table_checksum(
+    ha_spider *spider
+  );
+  int fetch_table_cardinality(
+    int mode,
+    TABLE *table,
+    longlong *cardinality,
+    uchar *cardinality_upd,
+    int bitmap_size
+  );
+  int fetch_table_mon_status(
+    int &status
+  );
+  int fetch_show_master_status(
+    const char **binlog_file_name,
+    const char **binlog_pos
+  );
+  int fetch_select_binlog_gtid_pos(
+    const char **gtid_pos
+  );
+  longlong num_rows();
+  uint num_fields();
+  void move_to_pos(
+    longlong pos
+  );
+  int get_errno();
+  int fetch_columns_for_discover_table_structure(
+    spider_string *str,
+    CHARSET_INFO *access_charset
+  );
+  int fetch_index_for_discover_table_structure(
+    spider_string *str,
+    CHARSET_INFO *access_charset
+  );
+  int fetch_table_for_discover_table_structure(
+    spider_string *str,
+    SPIDER_SHARE *spider_share,
+    CHARSET_INFO *access_charset
+  );
+};
+
+class spider_db_mysql_result: public spider_db_mbase_result
+{
+public:
+  spider_db_mysql_result(
+    SPIDER_DB_CONN *in_db_conn
+  );
+  ~spider_db_mysql_result();
+};
+
+class spider_db_mariadb_result: public spider_db_mbase_result
+{
+public:
+  spider_db_mariadb_result(
+    SPIDER_DB_CONN *in_db_conn
+  );
+  ~spider_db_mariadb_result();
+};
+
+class spider_db_mbase: public spider_db_conn
+{
+protected:
+  int                  stored_error;
+  spider_db_mbase_util *spider_db_mbase_utility;
+public:
+  MYSQL          *db_conn;
+  HASH           lock_table_hash;
+  bool           lock_table_hash_inited;
+  uint           lock_table_hash_id;
+  const char     *lock_table_hash_func_name;
+  const char     *lock_table_hash_file_name;
+  ulong          lock_table_hash_line_no;
+  spider_db_mbase(
+    SPIDER_CONN *conn,
+    spider_db_mbase_util *spider_db_mbase_utility
+  );
+  virtual ~spider_db_mbase();
+  int init();
+  bool is_connected();
+  void bg_connect();
+  int connect(
+    char *tgt_host,
+    char *tgt_username,
+    char *tgt_password,
+    long tgt_port,
+    char *tgt_socket,
+    char *server_name,
+    int connect_retry_count,
+    longlong connect_retry_interval
+  );
+  int ping();
+  void bg_disconnect();
+  void disconnect();
+  int set_net_timeout();
+  int exec_query(
+    const char *query,
+    uint length,
+    int quick_mode
+  );
+  int get_errno();
+  const char *get_error();
+  bool is_server_gone_error(
+    int error_num
+  );
+  bool is_dup_entry_error(
+    int error_num
+  );
+  bool is_xa_nota_error(
+    int error_num
+  );
+  int fetch_and_print_warnings(struct tm *l_time);
+  spider_db_result *store_result(
+    spider_db_result_buffer **spider_res_buf,
+    st_spider_db_request_key *request_key,
+    int *error_num
+  );
+  spider_db_result *use_result(
+    ha_spider *spider,
+    st_spider_db_request_key *request_key,
+    int *error_num
+  );
+  int next_result();
+  uint affected_rows();
+  uint matched_rows();
+  bool inserted_info(
+    spider_db_handler *handler,
+    ha_copy_info *copy_info
+  );
+  ulonglong last_insert_id();
+  int set_character_set(
+    const char *csname
+  );
+  int select_db(
+    const char *dbname
+  );
+  int consistent_snapshot(
+    int *need_mon
+  );
+  bool trx_start_in_bulk_sql();
+  int start_transaction(
+    int *need_mon
+  );
+  int commit(
+    int *need_mon
+  );
+  int rollback(
+    int *need_mon
+  );
+  bool xa_start_in_bulk_sql();
+  int xa_start(
+    XID *xid,
+    int *need_mon
+  );
+  int xa_end(
+    XID *xid,
+    int *need_mon
+  );
+  int xa_prepare(
+    XID *xid,
+    int *need_mon
+  );
+  int xa_commit(
+    XID *xid,
+    int *need_mon
+  );
+  int xa_rollback(
+    XID *xid,
+    int *need_mon
+  );
+  bool set_trx_isolation_in_bulk_sql();
+  int set_trx_isolation(
+    int trx_isolation,
+    int *need_mon
+  );
+  bool set_autocommit_in_bulk_sql();
+  int set_autocommit(
+    bool autocommit,
+    int *need_mon
+  );
+  bool set_sql_log_off_in_bulk_sql();
+  int set_sql_log_off(
+    bool sql_log_off,
+    int *need_mon
+  );
+  bool set_wait_timeout_in_bulk_sql();
+  int set_wait_timeout(
+    int wait_timeout,
+    int *need_mon
+  );
+  bool set_sql_mode_in_bulk_sql();
+  int set_sql_mode(
+    sql_mode_t sql_mode,
+    int *need_mon
+  );
+  bool set_time_zone_in_bulk_sql();
+  int set_time_zone(
+    Time_zone *time_zone,
+    int *need_mon
+  );
+  bool set_loop_check_in_bulk_sql();
+  int set_loop_check(
+    int *need_mon
+  );
+  int fin_loop_check();
+  int exec_simple_sql_with_result(
+    SPIDER_TRX *trx,
+    SPIDER_SHARE *share,
+    const char *sql,
+    uint sql_length,
+    int all_link_idx,
+    int *need_mon,
+    SPIDER_DB_RESULT **res
+  );
+  int show_master_status(
+    SPIDER_TRX *trx,
+    SPIDER_SHARE *share,
+    int all_link_idx,
+    int *need_mon,
+    TABLE *table,
+    spider_string *str,
+    int mode,
+    SPIDER_DB_RESULT **res1,
+    SPIDER_DB_RESULT **res2
+  );
+  int select_binlog_gtid_pos(
+    SPIDER_TRX *trx,
+    SPIDER_SHARE *share,
+    int all_link_idx,
+    int *need_mon,
+    TABLE *table,
+    spider_string *str,
+    const char *binlog_file_name,
+    uint binlog_file_name_length,
+    const char *binlog_pos,
+    uint binlog_pos_length,
+    SPIDER_DB_RESULT **res
+  );
+  size_t escape_string(
+    char *to,
+    const char *from,
+    size_t from_length
+  );
+  bool have_lock_table_list();
+  int append_lock_tables(
+    spider_string *str
+  );
+  int append_unlock_tables(
+    spider_string *str
+  );
+  uint get_lock_table_hash_count();
+  void reset_lock_table_hash();
+  void set_dup_key_idx(
+    ha_spider *spider,
+    int link_idx
+  );
+  bool cmp_request_key_to_snd(
+    st_spider_db_request_key *request_key
+  );
+};
+
+class spider_db_mysql: public spider_db_mbase
+{
+public:
+  spider_db_mysql(
+    SPIDER_CONN *conn
+  );
+  ~spider_db_mysql();
+};
+
+class spider_db_mariadb: public spider_db_mbase
+{
+public:
+  spider_db_mariadb(
+    SPIDER_CONN *conn
+  );
+  ~spider_db_mariadb();
+};
+
+class spider_mbase_share: public spider_db_share
+{
+protected:
+  spider_db_mbase_util *spider_db_mbase_utility;
+public:
+  spider_string      *table_select;
+  int                table_select_pos;
+  spider_string      *key_select;
+  int                *key_select_pos;
+  spider_string      *key_hint;
+  spider_string      *show_table_status;
+  spider_string      *show_records;
+  spider_string      *show_index;
+  spider_string      *table_names_str;
+  spider_string      *db_names_str;
+  spider_string      *db_table_str;
+  my_hash_value_type *db_table_str_hash_value;
+  uint               table_nm_max_length;
+  uint               db_nm_max_length;
+  spider_string      *column_name_str;
+  bool               same_db_table_name;
+  int                first_all_link_idx;
+
+  spider_mbase_share(
+    st_spider_share *share,
+    uint dbton_id,
+    spider_db_mbase_util *spider_db_mbase_utility
+  );
+  virtual ~spider_mbase_share();
+  int init();
+  uint get_column_name_length(
+    uint field_index
+  );
+  int append_column_name(
+    spider_string *str,
+    uint field_index
+  );
+  int append_column_name_with_alias(
+    spider_string *str,
+    uint field_index,
+    const char *alias,
+    uint alias_length
+  );
+  int append_table_name(
+    spider_string *str,
+    int all_link_idx
+  );
+  int append_table_name_with_adjusting(
+    spider_string *str,
+    int all_link_idx
+  );
+  int append_from_with_adjusted_table_name(
+    spider_string *str,
+    int *table_name_pos
+  );
+  bool need_change_db_table_name();
+  int discover_table_structure(
+    SPIDER_TRX *trx,
+    SPIDER_SHARE *spider_share,
+    spider_string *str
+  );
+  bool checksum_support();
+protected:
+  int create_table_names_str();
+  void free_table_names_str();
+  int create_column_name_str();
+  void free_column_name_str();
+  int convert_key_hint_str();
+  int append_show_table_status();
+  void free_show_table_status();
+  int append_show_records();
+  void free_show_records();
+  int append_show_index();
+  void free_show_index();
+  int append_table_select();
+  int append_key_select(
+    uint idx
+  );
+};
+
+class spider_mysql_share: public spider_mbase_share
+{
+public:
+  spider_mysql_share(
+    st_spider_share *share
+  );
+  ~spider_mysql_share();
+};
+
+class spider_mariadb_share: public spider_mbase_share
+{
+public:
+  spider_mariadb_share(
+    st_spider_share *share
+  );
+  ~spider_mariadb_share();
+};
+
+class spider_mbase_handler: public spider_db_handler
+{
+protected:
+  spider_db_mbase_util    *spider_db_mbase_utility;
+  spider_string           sql;
+  spider_string           sql_part;
+  spider_string           sql_part2;
+  spider_string           ha_sql;
+  int                     where_pos;
+  int                     order_pos;
+  int                     limit_pos;
+public:
+  int                     table_name_pos;
+protected:
+  int                     ha_read_pos;
+  int                     ha_next_pos;
+  int                     ha_where_pos;
+  int                     ha_limit_pos;
+  int                     ha_table_name_pos;
+  uint                    ha_sql_handler_id;
+  spider_string           insert_sql;
+  int                     insert_pos;
+  int                     insert_table_name_pos;
+  spider_string           update_sql;
+  TABLE                   *upd_tmp_tbl;
+  TMP_TABLE_PARAM         upd_tmp_tbl_prm;
+  spider_string           tmp_sql;
+  int                     tmp_sql_pos1; /* drop db nm pos at tmp_table_join */
+  int                     tmp_sql_pos2; /* create db nm pos at tmp_table_join */
+  int                     tmp_sql_pos3; /* insert db nm pos at tmp_table_join */
+  int                     tmp_sql_pos4; /* insert val pos at tmp_table_join */
+  int                     tmp_sql_pos5; /* end of drop tbl at tmp_table_join */
+  spider_string           dup_update_sql;
+  spider_string           *exec_sql;
+  spider_string           *exec_insert_sql;
+  spider_string           *exec_update_sql;
+  spider_string           *exec_tmp_sql;
+  spider_string           *exec_ha_sql;
+  bool                    reading_from_bulk_tmp_table;
+  bool                    filled_up;
+  SPIDER_INT_HLD          *union_table_name_pos_first;
+  SPIDER_INT_HLD          *union_table_name_pos_current;
+public:
+  spider_mbase_share      *mysql_share;
+  SPIDER_LINK_FOR_HASH    *link_for_hash;
+  uchar                   *minimum_select_bitmap;
+  uchar                   direct_insert_kind;
+  spider_mbase_handler(
+    ha_spider *spider,
+    spider_mbase_share *share,
+    spider_db_mbase_util *spider_db_mbase_utility
+  );
+  virtual ~spider_mbase_handler();
+  int init();
+  int append_index_hint(
+    spider_string *str,
+    int link_idx,
+    ulong sql_type
+    );
+  int append_table_name_with_adjusting(
+    spider_string *str,
+    int link_idx,
+    ulong sql_type
+  );
+  int append_key_column_types(
+    const key_range *start_key,
+    spider_string *str
+  );
+  int append_key_join_columns_for_bka(
+    const key_range *start_key,
+    spider_string *str,
+    const char **table_aliases,
+    uint *table_alias_lengths
+  );
+  int append_tmp_table_and_sql_for_bka(
+    const key_range *start_key
+  );
+  int reuse_tmp_table_and_sql_for_bka();
+  void create_tmp_bka_table_name(
+    char *tmp_table_name,
+    int *tmp_table_name_length,
+    int link_idx
+  );
+  int append_create_tmp_bka_table(
+    const key_range *start_key,
+    spider_string *str,
+    char *tmp_table_name,
+    int tmp_table_name_length,
+    int *db_name_pos,
+    CHARSET_INFO *table_charset
+  );
+  int append_drop_tmp_bka_table(
+    spider_string *str,
+    char *tmp_table_name,
+    int tmp_table_name_length,
+    int *db_name_pos,
+    int *drop_table_end_pos,
+    bool with_semicolon
+  );
+  int append_insert_tmp_bka_table(
+    const key_range *start_key,
+    spider_string *str,
+    char *tmp_table_name,
+    int tmp_table_name_length,
+    int *db_name_pos
+  );
+  int append_union_table_and_sql_for_bka(
+    const key_range *start_key
+  );
+  int reuse_union_table_and_sql_for_bka();
+  int append_insert_for_recovery(
+    ulong sql_type,
+    int link_idx
+  );
+  int append_update(
+    const TABLE *table,
+    my_ptrdiff_t ptr_diff
+  );
+  int append_update(
+    const TABLE *table,
+    my_ptrdiff_t ptr_diff,
+    int link_idx
+  );
+  int append_delete(
+    const TABLE *table,
+    my_ptrdiff_t ptr_diff
+  );
+  int append_delete(
+    const TABLE *table,
+    my_ptrdiff_t ptr_diff,
+    int link_idx
+  );
+  int append_insert_part();
+  int append_insert(
+    spider_string *str,
+    int link_idx
+  );
+  int append_update_part();
+  int append_update(
+    spider_string *str,
+    int link_idx
+  );
+  int append_delete_part();
+  int append_delete(
+    spider_string *str
+  );
+  int append_update_set_part();
+  int append_update_set(
+    spider_string *str
+  );
+  int append_direct_update_set_part();
+  int append_direct_update_set(
+    spider_string *str
+  );
+  int append_dup_update_pushdown_part(
+    const char *alias,
+    uint alias_length
+  );
+  int append_update_columns_part(
+    const char *alias,
+    uint alias_length
+  );
+  int check_update_columns_part();
+  int append_update_columns(
+    spider_string *str,
+    const char *alias,
+    uint alias_length
+  );
+  int append_select_part(
+    ulong sql_type
+  );
+  int append_select(
+    spider_string *str,
+    ulong sql_type
+  );
+  int append_table_select_part(
+    ulong sql_type
+  );
+  int append_table_select(
+    spider_string *str
+  );
+  int append_key_select_part(
+    ulong sql_type,
+    uint idx
+  );
+  int append_key_select(
+    spider_string *str,
+    uint idx
+  );
+  int append_minimum_select_part(
+    ulong sql_type
+  );
+  int append_minimum_select(
+    spider_string *str,
+    ulong sql_type
+  );
+  int append_table_select_with_alias(
+    spider_string *str,
+    const char *alias,
+    uint alias_length
+  );
+  int append_key_select_with_alias(
+    spider_string *str,
+    const KEY *key_info,
+    const char *alias,
+    uint alias_length
+  );
+  int append_minimum_select_with_alias(
+    spider_string *str,
+    const char *alias,
+    uint alias_length
+  );
+  int append_select_columns_with_alias(
+    spider_string *str,
+    const char *alias,
+    uint alias_length
+  );
+  int append_hint_after_table_part(
+    ulong sql_type
+  );
+  int append_hint_after_table(
+    spider_string *str
+  );
+  void set_where_pos(
+    ulong sql_type
+  );
+  void set_where_to_pos(
+    ulong sql_type
+  );
+  int check_item_type(
+    Item *item
+  );
+  int append_values_connector_part(
+    ulong sql_type
+  );
+  int append_values_connector(
+    spider_string *str
+  );
+  int append_values_terminator_part(
+    ulong sql_type
+  );
+  int append_values_terminator(
+    spider_string *str
+  );
+  int append_union_table_connector_part(
+    ulong sql_type
+  );
+  int append_union_table_connector(
+    spider_string *str
+  );
+  int append_union_table_terminator_part(
+    ulong sql_type
+  );
+  int append_union_table_terminator(
+    spider_string *str
+  );
+  int append_key_column_values_part(
+    const key_range *start_key,
+    ulong sql_type
+  );
+  int append_key_column_values(
+    spider_string *str,
+    const key_range *start_key
+  );
+  int append_key_column_values_with_name_part(
+    const key_range *start_key,
+    ulong sql_type
+  );
+  int append_key_column_values_with_name(
+    spider_string *str,
+    const key_range *start_key
+  );
+  int append_key_where_part(
+    const key_range *start_key,
+    const key_range *end_key,
+    ulong sql_type
+  );
+  int append_key_where(
+    spider_string *str,
+    spider_string *str_part,
+    spider_string *str_part2,
+    const key_range *start_key,
+    const key_range *end_key,
+    ulong sql_type,
+    bool set_order
+  );
+  int append_is_null_part(
+    ulong sql_type,
+    KEY_PART_INFO *key_part,
+    const key_range *key,
+    const uchar **ptr,
+    bool key_eq,
+    bool tgt_final
+  );
+  int append_is_null(
+    ulong sql_type,
+    spider_string *str,
+    spider_string *str_part,
+    spider_string *str_part2,
+    KEY_PART_INFO *key_part,
+    const key_range *key,
+    const uchar **ptr,
+    bool key_eq,
+    bool tgt_final
+  );
+  int append_where_terminator_part(
+    ulong sql_type,
+    bool set_order,
+    int key_count
+  );
+  int append_where_terminator(
+    ulong sql_type,
+    spider_string *str,
+    spider_string *str_part,
+    spider_string *str_part2,
+    bool set_order,
+    int key_count
+  );
+  int append_match_where_part(
+    ulong sql_type
+  );
+  int append_match_where(
+    spider_string *str
+  );
+  int append_update_where(
+    spider_string *str,
+    const TABLE *table,
+    my_ptrdiff_t ptr_diff
+  );
+  int append_condition_part(
+    const char *alias,
+    uint alias_length,
+    ulong sql_type,
+    bool test_flg
+  );
+  int append_condition(
+    spider_string *str,
+    const char *alias,
+    uint alias_length,
+    bool start_where,
+    ulong sql_type
+  );
+  int append_match_against_part(
+    ulong sql_type,
+    st_spider_ft_info *ft_info,
+    const char *alias,
+    uint alias_length
+  );
+  int append_match_against(
+    spider_string *str,
+    st_spider_ft_info  *ft_info,
+    const char *alias,
+    uint alias_length
+  );
+  int append_match_select_part(
+    ulong sql_type,
+    const char *alias,
+    uint alias_length
+  );
+  int append_match_select(
+    spider_string *str,
+    const char *alias,
+    uint alias_length
+  );
+  int append_sum_select_part(
+    ulong sql_type,
+    const char *alias,
+    uint alias_length
+  );
+  int append_sum_select(
+    spider_string *str,
+    const char *alias,
+    uint alias_length
+  );
+  void set_order_pos(
+    ulong sql_type
+  );
+  void set_order_to_pos(
+    ulong sql_type
+  );
+  int append_group_by_part(
+    const char *alias,
+    uint alias_length,
+    ulong sql_type
+  );
+  int append_group_by(
+    spider_string *str,
+    const char *alias,
+    uint alias_length
+  );
+  int append_key_order_for_merge_with_alias_part(
+    const char *alias,
+    uint alias_length,
+    ulong sql_type
+  );
+  int append_key_order_for_merge_with_alias(
+    spider_string *str,
+    const char *alias,
+    uint alias_length
+  );
+  int append_key_order_for_direct_order_limit_with_alias_part(
+    const char *alias,
+    uint alias_length,
+    ulong sql_type
+  );
+  int append_key_order_for_direct_order_limit_with_alias(
+    spider_string *str,
+    const char *alias,
+    uint alias_length
+  );
+  int append_key_order_with_alias_part(
+    const char *alias,
+    uint alias_length,
+    ulong sql_type
+  );
+  int append_key_order_for_handler(
+    spider_string *str,
+    const char *alias,
+    uint alias_length
+  );
+  int append_key_order_with_alias(
+    spider_string *str,
+    const char *alias,
+    uint alias_length
+  );
+  int append_limit_part(
+    longlong offset,
+    longlong limit,
+    ulong sql_type
+  );
+  int reappend_limit_part(
+    longlong offset,
+    longlong limit,
+    ulong sql_type
+  );
+  int append_limit(
+    spider_string *str,
+    longlong offset,
+    longlong limit
+  );
+  int append_select_lock_part(
+    ulong sql_type
+  );
+  int append_select_lock(
+    spider_string *str
+  );
+  int append_union_all_start_part(
+    ulong sql_type
+  );
+  int append_union_all_start(
+    spider_string *str
+  );
+  int append_union_all_part(
+    ulong sql_type
+  );
+  int append_union_all(
+    spider_string *str
+  );
+  int append_union_all_end_part(
+    ulong sql_type
+  );
+  int append_union_all_end(
+    spider_string *str
+  );
+  int append_multi_range_cnt_part(
+    ulong sql_type,
+    uint multi_range_cnt,
+    bool with_comma
+  );
+  int append_multi_range_cnt(
+    spider_string *str,
+    uint multi_range_cnt,
+    bool with_comma
+  );
+  int append_multi_range_cnt_with_name_part(
+    ulong sql_type,
+    uint multi_range_cnt
+  );
+  int append_multi_range_cnt_with_name(
+    spider_string *str,
+    uint multi_range_cnt
+  );
+  int append_insert_terminator_part(
+    ulong sql_type
+  );
+  int append_insert_terminator(
+    spider_string *str
+  );
+  int append_insert_values_part(
+    ulong sql_type
+  );
+  int append_insert_values(
+    spider_string *str
+  );
+  int append_into_part(
+    ulong sql_type
+  );
+  int append_into(
+    spider_string *str
+  );
+  void set_insert_to_pos(
+    ulong sql_type
+  );
+  int append_from_part(
+    ulong sql_type,
+    int link_idx
+  );
+  int append_from(
+    spider_string *str,
+    ulong sql_type,
+    int link_idx
+  );
+  int append_flush_tables_part(
+    ulong sql_type,
+    int link_idx,
+    bool lock
+  );
+  int append_flush_tables(
+    spider_string *str,
+    int link_idx,
+    bool lock
+  );
+  int append_optimize_table_part(
+    ulong sql_type,
+    int link_idx
+  );
+  int append_optimize_table(
+    spider_string *str,
+    int link_idx
+  );
+  int append_analyze_table_part(
+    ulong sql_type,
+    int link_idx
+  );
+  int append_analyze_table(
+    spider_string *str,
+    int link_idx
+  );
+  int append_repair_table_part(
+    ulong sql_type,
+    int link_idx,
+    HA_CHECK_OPT* check_opt
+  );
+  int append_repair_table(
+    spider_string *str,
+    int link_idx,
+    HA_CHECK_OPT* check_opt
+  );
+  int append_check_table_part(
+    ulong sql_type,
+    int link_idx,
+    HA_CHECK_OPT* check_opt
+  );
+  int append_check_table(
+    spider_string *str,
+    int link_idx,
+    HA_CHECK_OPT* check_opt
+  );
+  int append_enable_keys_part(
+    ulong sql_type,
+    int link_idx
+  );
+  int append_enable_keys(
+    spider_string *str,
+    int link_idx
+  );
+  int append_disable_keys_part(
+    ulong sql_type,
+    int link_idx
+  );
+  int append_disable_keys(
+    spider_string *str,
+    int link_idx
+  );
+  int append_delete_all_rows_part(
+    ulong sql_type
+  );
+  int append_delete_all_rows(
+    spider_string *str,
+    ulong sql_type
+  );
+  int append_truncate(
+    spider_string *str,
+    ulong sql_type,
+    int link_idx
+  );
+  int append_explain_select_part(
+    const key_range *start_key,
+    const key_range *end_key,
+    ulong sql_type,
+    int link_idx
+  );
+  int append_explain_select(
+    spider_string *str,
+    const key_range *start_key,
+    const key_range *end_key,
+    ulong sql_type,
+    int link_idx
+  );
+  bool is_sole_projection_field(
+    uint16 field_index
+  );
+  bool is_bulk_insert_exec_period(
+    bool bulk_end
+  );
+  bool sql_is_filled_up(
+    ulong sql_type
+  );
+  bool sql_is_empty(
+    ulong sql_type
+  );
+  bool support_multi_split_read();
+  bool support_bulk_update();
+  int bulk_tmp_table_insert();
+  int bulk_tmp_table_insert(
+    int link_idx
+  );
+  int bulk_tmp_table_end_bulk_insert();
+  int bulk_tmp_table_rnd_init();
+  int bulk_tmp_table_rnd_next();
+  int bulk_tmp_table_rnd_end();
+  bool need_copy_for_update(
+    int link_idx
+  );
+  bool bulk_tmp_table_created();
+  int mk_bulk_tmp_table_and_bulk_start();
+  void rm_bulk_tmp_table();
+  int store_sql_to_bulk_tmp_table(
+    spider_string *str,
+    TABLE *tmp_table
+  );
+  int restore_sql_from_bulk_tmp_table(
+    spider_string *str,
+    TABLE *tmp_table
+  );
+  int insert_lock_tables_list(
+    SPIDER_CONN *conn,
+    int link_idx
+  );
+  int append_lock_tables_list(
+    SPIDER_CONN *conn,
+    int link_idx,
+    int *appended
+  );
+  int realloc_sql(
+    ulong *realloced
+  );
+  int reset_sql(
+    ulong sql_type
+  );
+  int set_sql_for_exec(
+    ulong sql_type,
+    int link_idx,
+    SPIDER_LINK_IDX_CHAIN *link_idx_chain
+  );
+  int set_sql_for_exec(
+    ulong sql_type,
+    int link_idx
+  );
+  int set_sql_for_exec(
+    spider_db_copy_table *tgt_ct,
+    ulong sql_type
+  );
+  int execute_sql(
+    ulong sql_type,
+    SPIDER_CONN *conn,
+    int quick_mode,
+    int *need_mon
+  );
+  int reset();
+  int sts_mode_exchange(
+    int sts_mode
+  );
+  int show_table_status(
+    int link_idx,
+    int sts_mode,
+    uint flag
+  );
+  int crd_mode_exchange(
+    int crd_mode
+  );
+  int show_index(
+    int link_idx,
+    int crd_mode
+  );
+  int simple_action(
+    uint simple_action,
+    int link_idx
+  );
+  int show_records(
+    int link_idx
+  );
+  int checksum_table(
+    int link_idx
+  );
+  int show_last_insert_id(
+    int link_idx,
+    ulonglong &last_insert_id
+  );
+  ha_rows explain_select(
+    const key_range *start_key,
+    const key_range *end_key,
+    int link_idx
+  );
+  int lock_tables(
+    int link_idx
+  );
+  int unlock_tables(
+    int link_idx
+  );
+  int disable_keys(
+    SPIDER_CONN *conn,
+    int link_idx
+  );
+  int enable_keys(
+    SPIDER_CONN *conn,
+    int link_idx
+  );
+  int check_table(
+    SPIDER_CONN *conn,
+    int link_idx,
+    HA_CHECK_OPT* check_opt
+  );
+  int repair_table(
+    SPIDER_CONN *conn,
+    int link_idx,
+    HA_CHECK_OPT* check_opt
+  );
+  int analyze_table(
+    SPIDER_CONN *conn,
+    int link_idx
+  );
+  int optimize_table(
+    SPIDER_CONN *conn,
+    int link_idx
+  );
+  int flush_tables(
+    SPIDER_CONN *conn,
+    int link_idx,
+    bool lock
+  );
+  int flush_logs(
+    SPIDER_CONN *conn,
+    int link_idx
+  );
+  int sync_from_clone_source(
+    spider_db_handler *dbton_hdl
+  );
+  void minimum_select_bitmap_create();
+  bool minimum_select_bit_is_set(
+    uint field_index
+  );
+  void copy_minimum_select_bitmap(
+    uchar *bitmap
+  );
+  int init_union_table_name_pos();
+  int set_union_table_name_pos();
+  int reset_union_table_name(
+    spider_string *str,
+    int link_idx,
+    ulong sql_type
+  );
+  int append_from_and_tables_part(
+    spider_fields *fields,
+    ulong sql_type
+  );
+  int reappend_tables_part(
+    spider_fields *fields,
+    ulong sql_type
+  );
+  int append_where_part(
+    ulong sql_type
+  );
+  int append_having_part(
+    ulong sql_type
+  );
+  int append_item_type_part(
+    Item *item,
+    const char *alias,
+    uint alias_length,
+    bool use_fields,
+    spider_fields *fields,
+    ulong sql_type
+  );
+  int append_list_item_select_part(
+    List<Item> *select,
+    const char *alias,
+    uint alias_length,
+    bool use_fields,
+    spider_fields *fields,
+    ulong sql_type
+  );
+  int append_list_item_select(
+    List<Item> *select,
+    spider_string *str,
+    const char *alias,
+    uint alias_length,
+    bool use_fields,
+    spider_fields *fields
+  );
+  int append_group_by_part(
+    ORDER *order,
+    const char *alias,
+    uint alias_length,
+    bool use_fields,
+    spider_fields *fields,
+    ulong sql_type
+  );
+  int append_group_by(
+    ORDER *order,
+    spider_string *str,
+    const char *alias,
+    uint alias_length,
+    bool use_fields,
+    spider_fields *fields
+  );
+  int append_order_by_part(
+    ORDER *order,
+    const char *alias,
+    uint alias_length,
+    bool use_fields,
+    spider_fields *fields,
+    ulong sql_type
+  );
+  int append_order_by(
+    ORDER *order,
+    spider_string *str,
+    const char *alias,
+    uint alias_length,
+    bool use_fields,
+    spider_fields *fields
+  );
+  bool check_direct_update(
+    st_select_lex *select_lex,
+    longlong select_limit,
+    longlong offset_limit
+  );
+  bool check_direct_delete(
+    st_select_lex *select_lex,
+    longlong select_limit,
+    longlong offset_limit
+  );
+};
+
+class spider_mysql_handler: public spider_mbase_handler
+{
+public:
+  spider_mysql_handler(
+    ha_spider *spider,
+    spider_mbase_share *share
+  );
+  ~spider_mysql_handler();
+};
+
+class spider_mariadb_handler: public spider_mbase_handler
+{
+public:
+  spider_mariadb_handler(
+    ha_spider *spider,
+    spider_mbase_share *share
+  );
+  ~spider_mariadb_handler();
+};
+
+class spider_mbase_copy_table: public spider_db_copy_table
+{
+public:
+  spider_mbase_share      *mysql_share;
+  spider_string           sql;
+  uint                    pos;
+  spider_mbase_copy_table(
+    spider_mbase_share *db_share
+  );
+  virtual ~spider_mbase_copy_table();
+  int init();
+  void set_sql_charset(
+    CHARSET_INFO *cs
+  );
+  int append_select_str();
+  int append_insert_str(
+    int insert_flg
+  );
+  int append_table_columns(
+    TABLE_SHARE *table_share
+  );
+  int append_from_str();
+  int append_table_name(
+    int link_idx
+  );
+  void set_sql_pos();
+  void set_sql_to_pos();
+  int append_copy_where(
+    spider_db_copy_table *source_ct,
+    KEY *key_info,
+    ulong *last_row_pos,
+    ulong *last_lengths
+  );
+  int append_key_order_str(
+    KEY *key_info,
+    int start_pos,
+    bool desc_flg
+  );
+  int append_limit(
+    longlong offset,
+    longlong limit
+  );
+  int append_into_str();
+  int append_open_paren_str();
+  int append_values_str();
+  int append_select_lock_str(
+    int lock_mode
+  );
+  int exec_query(
+    SPIDER_CONN *conn,
+    int quick_mode,
+    int *need_mon
+  );
+  int copy_key_row(
+    spider_db_copy_table *source_ct,
+    Field *field,
+    ulong *row_pos,
+    ulong *length,
+    const char *joint_str,
+    const int joint_length
+  );
+  int copy_row(
+    Field *field,
+    SPIDER_DB_ROW *row
+  );
+  int copy_rows(
+    TABLE *table,
+    SPIDER_DB_ROW *row,
+    ulong **last_row_pos,
+    ulong **last_lengths
+  );
+  int copy_rows(
+    TABLE *table,
+    SPIDER_DB_ROW *row
+  );
+  int append_insert_terminator();
+  int copy_insert_values(
+    spider_db_copy_table *source_ct
+  );
+};
+
+class spider_mysql_copy_table: public spider_mbase_copy_table
+{
+public:
+  spider_mysql_copy_table(
+    spider_mbase_share *db_share
+  );
+  ~spider_mysql_copy_table();
+};
+
+class spider_mariadb_copy_table: public spider_mbase_copy_table
+{
+public:
+  spider_mariadb_copy_table(
+    spider_mbase_share *db_share
+  );
+  ~spider_mariadb_copy_table();
+};