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Add display of sort keys to the default EXPLAIN output.

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This commit is contained in:
Tom Lane
2002-05-18 21:38:41 +00:00
parent a5b370943e
commit dd9af92c41
3 changed files with 87 additions and 4 deletions
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23
src/backend/utils/adt/ruleutils.c
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@ -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