From dd9af92c413827404e87d479a48c5eb696857423 Mon Sep 17 00:00:00 2001 From: Tom Lane Date: Sat, 18 May 2002 21:38:41 +0000 Subject: Add display of sort keys to the default EXPLAIN output. --- src/backend/utils/adt/ruleutils.c | 23 ++++++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-) (limited to 'src/backend/utils/adt/ruleutils.c') diff --git a/src/backend/utils/adt/ruleutils.c b/src/backend/utils/adt/ruleutils.c index 88528b9a065..738efdb7442 100644 --- a/src/backend/utils/adt/ruleutils.c +++ b/src/backend/utils/adt/ruleutils.c @@ -3,7 +3,7 @@ * back to source text * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/utils/adt/ruleutils.c,v 1.105 2002/05/17 01:19:18 tgl Exp $ + * $Header: /cvsroot/pgsql/src/backend/utils/adt/ruleutils.c,v 1.106 2002/05/18 21:38:40 tgl Exp $ * * This software is copyrighted by Jan Wieck - Hamburg. * @@ -779,6 +779,27 @@ deparse_context_for_subplan(const char *name, List *tlist, return (Node *) rte; } +/* + * deparse_context_from_rtable - Build deparse context given a rangetable + * + * This is suitable for deparsing expressions that refer to only a single + * level of variables (no outer-reference Vars). + */ +List * +deparse_context_from_rtable(List *rtable) +{ + deparse_namespace *dpns; + + dpns = (deparse_namespace *) palloc(sizeof(deparse_namespace)); + + dpns->rtable = rtable; + dpns->outer_varno = dpns->inner_varno = 0; + dpns->outer_rte = dpns->inner_rte = NULL; + + /* Return a one-deep namespace stack */ + return makeList1(dpns); +} + /* ---------- * make_ruledef - reconstruct the CREATE RULE command * for a given pg_rewrite tuple -- cgit v1.2.3