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Fix inline_set_returning_function() to allow multiple OUT parameters.

inline_set_returning_function failed to distinguish functions returninggeneric RECORD (which require a column list in the RTE, as well as run-timetype checking) from those with multiple OUT parameters (which do not).This prevented inlining from happening. Per complaint from Jay Levitt.Back-patch to 8.4 where this capability was introduced.

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src/backend/optimizer/util
- clauses.c

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`‎src/backend/optimizer/util/clauses.c`

Lines changed: 5 additions & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -26,6 +26,7 @@`
`26`	`26`	`#include"catalog/pg_type.h"`
`27`	`27`	`#include"executor/executor.h"`
`28`	`28`	`#include"executor/functions.h"`
	`29`	`+#include"funcapi.h"`
`29`	`30`	`#include"miscadmin.h"`
`30`	`31`	`#include"nodes/makefuncs.h"`
`31`	`32`	`#include"nodes/nodeFuncs.h"`
`@@ -4476,9 +4477,12 @@ inline_set_returning_function(PlannerInfo root, RangeTblEntry rte)`
`4476`	`4477`	`* If it returns RECORD, we have to check against the column type list`
`4477`	`4478`	`* provided in the RTE; check_sql_fn_retval can't do that. (If no match,`
`4478`	`4479`	`* we just fail to inline, rather than complaining; see notes for`
`4479`		`- * tlist_matches_coltypelist.)`
	`4480`	`+ * tlist_matches_coltypelist.) We don't have to do this for functions`
	`4481`	`+ * with declared OUT parameters, even though their funcresulttype is`
	`4482`	`+ * RECORDOID, so check get_func_result_type too.`
`4480`	`4483`	`*/`
`4481`	`4484`	`if (fexpr->funcresulttype==RECORDOID&&`
	`4485`	`+get_func_result_type(func_oid,NULL,NULL)==TYPEFUNC_RECORD&&`
`4482`	`4486`	`!tlist_matches_coltypelist(querytree->targetList,rte->funccoltypes))`
`4483`	`4487`	`gotofail;`
`4484`	`4488`

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Commit1819a37

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`‎src/backend/optimizer/util/clauses.c`

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