From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Fri, 6 Jan 2006 20:11:24 +0000 (+0000)
Subject: Fix failure to apply domain constraints to a NULL constant that's added to
X-Git-Url: http://git.postgresql.org/gitweb/static/gitweb.js?a=commitdiff_plain;h=7339c02c5f99c5c843f47187e551c949bf61ac62;p=users%2Fbernd%2Fpostgres.git

Fix failure to apply domain constraints to a NULL constant that's added to
an INSERT target list during rule rewriting.  Per report from John Supplee.
---

diff --git a/src/backend/rewrite/rewriteManip.c b/src/backend/rewrite/rewriteManip.c
index ce72eb2fa5..66dd414298 100644
--- a/src/backend/rewrite/rewriteManip.c
+++ b/src/backend/rewrite/rewriteManip.c
@@ -18,6 +18,7 @@
 #include "optimizer/clauses.h"
 #include "optimizer/tlist.h"
 #include "parser/parsetree.h"
+#include "parser/parse_coerce.h"
 #include "parser/parse_relation.h"
 #include "rewrite/rewriteManip.h"
 #include "utils/lsyscache.h"
@@ -897,7 +898,13 @@ resolve_one_var(Var *var, ResolveNew_context *context)
 		else
 		{
 			/* Otherwise replace unmatched var with a null */
-			return (Node *) makeNullConst(var->vartype);
+			/* need coerce_to_domain in case of NOT NULL domain constraint */
+			return coerce_to_domain((Node *) makeNullConst(var->vartype),
+									InvalidOid,
+									var->vartype,
+									COERCE_IMPLICIT_CAST,
+									false,
+									false);
 		}
 	}
 	else