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Guard against parallel-restricted functions in VALUES expressions.

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Obvious brain fade in set_rel_consider_parallel().  Noticed it while
adjusting the adjacent RTE_FUNCTION case.

In 9.6, also make the code look more like what I just did in HEAD
by removing the unnecessary function_rte_parallel_ok subroutine
(it does nothing that expression_tree_walker wouldn't do).
This commit is contained in:
Tom Lane 2016-08-19 14:35:32 -04:00
parent da1c91631e
commit 65a603e903
1 changed files with 3 additions and 5 deletions
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8
src/backend/optimizer/path/allpaths.c
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@ -599,11 +599,9 @@ set_rel_consider_parallel(PlannerInfo *root, RelOptInfo *rel,
break;
case RTE_VALUES:
/*
* The data for a VALUES clause is stored in the plan tree itself,
* so scanning it in a worker is fine.
*/
/* Check for parallel-restricted functions. */
if (!is_parallel_safe(root, (Node *) rte->values_lists))
return;
break;
case RTE_CTE: