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MDEV-31187 Add class Sql_mode_save_for_frm_handling

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This commit is contained in:
Alexander Barkov
2023-04-28 14:04:06 +04:00
parent babd833685
commit d2d657e722
5 changed files with 55 additions and 48 deletions
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44
sql/sql_class.h
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@ -6910,6 +6910,50 @@ class Sql_mode_save
sql_mode_t old_mode; // SQL mode saved at construction time.
};
/*
Save the current sql_mode. Switch off sql_mode flags which can prevent
normal parsing of VIEWs, expressions in generated columns.
Restore the old sql_mode on destructor.
*/
class Sql_mode_save_for_frm_handling: public Sql_mode_save
{
public:
Sql_mode_save_for_frm_handling(THD *thd)
:Sql_mode_save(thd)
{
/*
- MODE_REAL_AS_FLOAT affect only CREATE TABLE parsing
+ MODE_PIPES_AS_CONCAT affect expression parsing
+ MODE_ANSI_QUOTES affect expression parsing
+ MODE_IGNORE_SPACE affect expression parsing
- MODE_IGNORE_BAD_TABLE_OPTIONS affect only CREATE/ALTER TABLE parsing
* MODE_ONLY_FULL_GROUP_BY affect execution
* MODE_NO_UNSIGNED_SUBTRACTION affect execution
- MODE_NO_DIR_IN_CREATE affect table creation only
- MODE_POSTGRESQL compounded from other modes
+ MODE_ORACLE affects Item creation (e.g for CONCAT)
- MODE_MSSQL compounded from other modes
- MODE_DB2 compounded from other modes
- MODE_MAXDB affect only CREATE TABLE parsing
- MODE_NO_KEY_OPTIONS affect only SHOW
- MODE_NO_TABLE_OPTIONS affect only SHOW
- MODE_NO_FIELD_OPTIONS affect only SHOW
- MODE_MYSQL323 affect only SHOW
- MODE_MYSQL40 affect only SHOW
- MODE_ANSI compounded from other modes
(+ transaction mode)
? MODE_NO_AUTO_VALUE_ON_ZERO affect UPDATEs
+ MODE_NO_BACKSLASH_ESCAPES affect expression parsing
+ MODE_EMPTY_STRING_IS_NULL affect expression parsing
*/
thd->variables.sql_mode&= ~(MODE_PIPES_AS_CONCAT | MODE_ANSI_QUOTES |
MODE_IGNORE_SPACE | MODE_NO_BACKSLASH_ESCAPES |
MODE_ORACLE | MODE_EMPTY_STRING_IS_NULL);
};
};
class Abort_on_warning_instant_set
{
THD *m_thd;