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| author | unknown <bell@sanja.is.com.ua> | 2002-06-06 16:28:22 +0300 |
|---|---|---|
| committer | unknown <bell@sanja.is.com.ua> | 2002-06-06 16:28:22 +0300 |
| commit | 90ced85443e4563ab1a7f94581691d2b7e30bdaa (patch) | |
| tree | 7498edfb6fcf77eeefa9cc20558a029c0f2fa4fe /sql/item_subselect.cc | |
| parent | 4a1dec3dfbf750dab7fcd6a5c6785c28b96a3c65 (diff) | |
| download | mariadb-git-90ced85443e4563ab1a7f94581691d2b7e30bdaa.tar.gz | |
Prevent needless rexecuting empty subselects
Diffstat (limited to 'sql/item_subselect.cc')
| -rw-r--r-- | sql/item_subselect.cc | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/sql/item_subselect.cc b/sql/item_subselect.cc index e18c8d78830..fc0228455ff 100644 --- a/sql/item_subselect.cc +++ b/sql/item_subselect.cc @@ -36,7 +36,7 @@ SUBSELECT TODO: #include "sql_select.h" Item_subselect::Item_subselect(THD *thd, st_select_lex *select_lex): - executed(0), optimized(0), error(0) + assigned(0), executed(0), optimized(0), error(0) { DBUG_ENTER("Item_subselect::Item_subselect"); DBUG_PRINT("subs", ("select_lex 0x%xl", (long) select_lex)); @@ -141,7 +141,7 @@ int Item_subselect::exec() return 1; } assign_null(); - executed= 0; + executed= assigned= 0; } if (!executed) { @@ -149,6 +149,7 @@ int Item_subselect::exec() join->thd->lex.select= select_lex; join->exec(); join->thd->lex.select= save_select; + executed= 1; return join->error; } return 0; |