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5.0-bugteam->5.1-bugteam merge

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This commit is contained in:
Sergey Glukhov
2008-11-27 18:11:54 +04:00
parent 8a43bcc33a 2fb574214e
commit 04824289dd
4 changed files with 93 additions and 0 deletions
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26
sql/sql_update.cc
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@@ -1470,6 +1470,32 @@ multi_update::initialize_tables(JOIN *join)
}
table->prepare_for_position();
/*
enable uncacheable flag if we update a view with check option
and check option has a subselect, otherwise, the check option
can be evaluated after the subselect was freed as independent
(See full_local in JOIN::join_free()).
*/
if (table_ref->check_option && !join->select_lex->uncacheable)
{
SELECT_LEX_UNIT *tmp_unit;
SELECT_LEX *sl;
for (tmp_unit= join->select_lex->first_inner_unit();
tmp_unit;
tmp_unit= tmp_unit->next_unit())
{
for (sl= tmp_unit->first_select(); sl; sl= sl->next_select())
{
if (sl->master_unit()->item)
{
join->select_lex->uncacheable|= UNCACHEABLE_CHECKOPTION;
goto loop_end;
}
}
}
}
loop_end:
if (table == first_table_for_update && table_ref->check_option)
{
table_map unupdated_tables= table_ref->check_option->used_tables() &