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Fixed many problems in the code of With_element::check_unrestricted_recursive().

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Added the check whether there are set functions in the specifications of recursive CTE.
Added the check whether there are recursive references in subqueries.
Introduced boolean system variable 'standards_compliant_cte'. By default it's set to 'on'.
When it's set to 'off' non-standard compliant CTE can be executed.
This commit is contained in:
Galina Shalygina
2016-05-19 22:07:53 +03:00
parent 3b47632bfc
commit 46a2e41398
13 changed files with 675 additions and 52 deletions
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2
sql/sql_derived.cc
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@ -771,7 +771,7 @@ exit:
*/
if (res)
{
if (derived->table)
if (derived->table && !derived->is_with_table_recursive_reference())
free_tmp_table(thd, derived->table);
delete derived->derived_result;
}