database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-08-01 03:47:19 +03:00
Code Activity

auto-merge

Browse Source
This commit is contained in:
Tatiana A. Nurnberg
2009-03-18 13:31:35 +01:00
parent e976b27ea6 ff37912ff4
commit a8fad0c923
303 changed files with 24164 additions and 3015 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
sql/sql_select.cc
View File

@ -7625,7 +7625,7 @@ static COND *build_equal_items_for_cond(THD *thd, COND *cond,
if (and_level)
{
/*
Retrieve all conjucts of this level detecting the equality
Retrieve all conjuncts of this level detecting the equality
that are subject to substitution by multiple equality items and
removing each such predicate from the conjunction after having
found/created a multiple equality whose inference the predicate is.
@ -7641,6 +7641,15 @@ static COND *build_equal_items_for_cond(THD *thd, COND *cond,
li.remove();
}
/*
Check if we eliminated all the predicates of the level, e.g.
(a=a AND b=b AND a=a).
*/
if (!args->elements &&
!cond_equal.current_level.elements &&
!eq_list.elements)
return new Item_int((longlong) 1, 1);
List_iterator_fast<Item_equal> it(cond_equal.current_level);
while ((item_equal= it++))
{