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Teach query_tree_walker, query_tree_mutator, and SS_finalize_plan to

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process function RTE expressions, which they were previously missing.
This allows outer-Var references and subselects to work correctly in
the arguments of a function RTE.  Install check to prevent function RTEs
from cross-referencing Vars of sibling FROM-items, which doesn't make
any sense (if you want to join, write a JOIN or WHERE clause).
This commit is contained in:
Tom Lane
2002-05-18 18:49:41 +00:00
parent 2c50f6344b
commit a5b370943e
5 changed files with 87 additions and 41 deletions
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src/include/optimizer/subselect.h
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@@ -14,7 +14,7 @@ extern List *PlannerInitPlan; /* init subplans for current query */
extern List *PlannerParamVar; /* to get Var from Param->paramid */
extern int PlannerPlanId; /* to assign unique ID to subquery plans */
extern List *SS_finalize_plan(Plan *plan);
extern List *SS_finalize_plan(Plan *plan, List *rtable);
extern Node *SS_replace_correlation_vars(Node *expr);
extern Node *SS_process_sublinks(Node *expr);