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Fixed a bug that caused crashes for SHOW CREATE VIEW <view> when <view> was recursive. Added a test case to check the fix.

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This commit is contained in:
Galina Shalygina
2016-05-14 23:33:50 +03:00
parent d9b332bd20
commit 3b47632bfc
4 changed files with 72 additions and 16 deletions
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8
sql/sql_cte.cc
View File

@ -330,8 +330,10 @@ With_element *With_clause::find_table_def(TABLE_LIST *table)
with_elem != NULL;
with_elem= with_elem->next_elem)
{
if (my_strcasecmp(system_charset_info, with_elem->query_name->str, table->table_name) == 0)
if (my_strcasecmp(system_charset_info, with_elem->query_name->str,
table->table_name) == 0)
{
table->set_derived();
return with_elem;
}
}
@ -740,6 +742,8 @@ bool st_select_lex::check_unrestricted_recursive()
encountered))
return true;
with_elem->owner->unrestricted|= unrestricted;
if (with_sum_func)
with_elem->owner->unrestricted|= with_elem->mutually_recursive;
return false;
}
@ -813,7 +817,7 @@ bool With_element::check_unrestricted_recursive(st_select_lex *sel,
{
if (tab->outer_join & (JOIN_TYPE_LEFT | JOIN_TYPE_RIGHT))
{
unrestricted|= get_elem_map();
unrestricted|= mutually_recursive;
break;
}
}