diff options
Diffstat (limited to 'src/backend/optimizer/util/clauses.c')
| -rw-r--r-- | src/backend/optimizer/util/clauses.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/src/backend/optimizer/util/clauses.c b/src/backend/optimizer/util/clauses.c index 1daafe1ea72..b68c22ba152 100644 --- a/src/backend/optimizer/util/clauses.c +++ b/src/backend/optimizer/util/clauses.c @@ -107,6 +107,7 @@ static bool contain_volatile_functions_not_nextval_walker(Node *node, void *cont static bool max_parallel_hazard_walker(Node *node, max_parallel_hazard_context *context); static bool contain_nonstrict_functions_walker(Node *node, void *context); +static bool contain_exec_param_walker(Node *node, List *param_ids); static bool contain_context_dependent_node(Node *clause); static bool contain_context_dependent_node_walker(Node *node, int *flags); static bool contain_leaked_vars_walker(Node *node, void *context); @@ -1441,6 +1442,40 @@ contain_nonstrict_functions_walker(Node *node, void *context) } /***************************************************************************** + * Check clauses for Params + *****************************************************************************/ + +/* + * contain_exec_param + * Recursively search for PARAM_EXEC Params within a clause. + * + * Returns true if the clause contains any PARAM_EXEC Param with a paramid + * appearing in the given list of Param IDs. Does not descend into + * subqueries! + */ +bool +contain_exec_param(Node *clause, List *param_ids) +{ + return contain_exec_param_walker(clause, param_ids); +} + +static bool +contain_exec_param_walker(Node *node, List *param_ids) +{ + if (node == NULL) + return false; + if (IsA(node, Param)) + { + Param *p = (Param *) node; + + if (p->paramkind == PARAM_EXEC && + list_member_int(param_ids, p->paramid)) + return true; + } + return expression_tree_walker(node, contain_exec_param_walker, param_ids); +} + +/***************************************************************************** * Check clauses for context-dependent nodes *****************************************************************************/ |