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Don't try to open temporary tables if there are no temporary tables.

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This was done to increase performance when not using temporary tables
as checking if a table is a temporary table involves a lot of code.
This commit is contained in:
Monty
2020-04-06 15:41:33 +03:00
parent f9f33b85be
commit 91ffdc8380
4 changed files with 21 additions and 13 deletions
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2
sql/sql_class.h
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@ -4851,6 +4851,7 @@ public:
TMP_TABLE_ANY
};
bool has_thd_temporary_tables();
bool has_temporary_tables();
TABLE *create_and_open_tmp_table(LEX_CUSTRING *frm,
const char *path,
@ -4889,7 +4890,6 @@ private:
/* Whether a lock has been acquired? */
bool m_tmp_tables_locked;
bool has_temporary_tables();
uint create_tmp_table_def_key(char *key, const char *db,
const char *table_name);
TMP_TABLE_SHARE *create_temporary_table(LEX_CUSTRING *frm,