diff options
Diffstat (limited to 'sql/item.h')
| -rw-r--r-- | sql/item.h | 25 |
1 files changed, 24 insertions, 1 deletions
@@ -28,6 +28,7 @@ #include "field.h" /* Derivation */ #include "sql_type.h" #include "sql_time.h" +#include "sql_schema.h" #include "mem_root_array.h" #include "cset_narrowing.h" @@ -1015,6 +1016,19 @@ public: expressions with subqueries in the ORDER/GROUP clauses. */ String *val_str() { return val_str(&str_value); } + String *val_str_null_to_empty(String *to) + { + String *res= val_str(to); + if (res) + return res; + to->set_charset(collation.collation); + to->length(0); + return to; + } + String *val_str_null_to_empty(String *to, bool null_to_empty) + { + return null_to_empty ? val_str_null_to_empty(to) : val_str(to); + } virtual Item_func *get_item_func() { return NULL; } const MY_LOCALE *locale_from_val_str(); @@ -1986,7 +2000,8 @@ public: QT_ITEM_IDENT_SKIP_DB_NAMES | QT_ITEM_IDENT_SKIP_TABLE_NAMES | QT_NO_DATA_EXPANSION | - QT_TO_SYSTEM_CHARSET), + QT_TO_SYSTEM_CHARSET | + QT_FOR_FRM), LOWEST_PRECEDENCE); } virtual void print(String *str, enum_query_type query_type); @@ -5482,6 +5497,14 @@ public: return (this->*processor)(arg); } /* + Built-in schema, e.g. mariadb_schema, oracle_schema, maxdb_schema + */ + virtual const Schema *schema() const + { + // A function does not belong to a built-in schema by default + return NULL; + } + /* This method is used for debug purposes to print the name of an item to the debug log. The second use of this method is as a helper function of print() and error messages, where it is |