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MDEV-17055: Server crashes in find_order_in_list upon 2nd (3rd) execution of SP with UPDATE

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1. Always drop merged_for_insert flag on cleanup (there could be errors which prevent TABLE to be assigned)
2. Make more precise cleanup of select parts which was touched
This commit is contained in:
Oleksandr Byelkin
2019-02-27 15:53:25 +01:00
parent 0ad598a00b
commit cb11b3fbe9
8 changed files with 105 additions and 16 deletions
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5
sql/sql_union.cc
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@ -215,8 +215,9 @@ st_select_lex_unit::init_prepare_fake_select_lex(THD *thd_arg,
called at the first execution of the statement, while first_execution
shows whether this is called at the first execution of the union that
may form just a subselect.
*/
if (!fake_select_lex->first_execution && first_execution)
*/
if ((fake_select_lex->changed_elements & TOUCHED_SEL_COND) &&
first_execution)
{
for (ORDER *order= global_parameters->order_list.first;
order;