diff options
Diffstat (limited to 'src/backend/utils/adt/ruleutils.c')
| -rw-r--r-- | src/backend/utils/adt/ruleutils.c | 23 |
1 files changed, 22 insertions, 1 deletions
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 |