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authorTom Lane <tgl@sss.pgh.pa.us>2003-04-29 22:13:11 +0000
committerTom Lane <tgl@sss.pgh.pa.us>2003-04-29 22:13:11 +0000
commitaa282d44464df0fbfa0672dc353d36734ec1092e (patch)
treedbf42be31346c6716bc33e73e801cda670fc60e4 /src/backend/optimizer/prep/prepunion.c
parent19141f558411e96446294baf240eaeccf6d68b64 (diff)
Infrastructure for deducing Param types from context, in the same way
that the types of untyped string-literal constants are deduced (ie, when coerce_type is applied to 'em, that's what the type must be). Remove the ancient hack of storing the input Param-types array as a global variable, and put the info into ParseState instead. This touches a lot of files because of adjustment of routine parameter lists, but it's really not a large patch. Note: PREPARE statement still insists on exact specification of parameter types, but that could easily be relaxed now, if we wanted to do so.
Diffstat (limited to 'src/backend/optimizer/prep/prepunion.c')
-rw-r--r--src/backend/optimizer/prep/prepunion.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/src/backend/optimizer/prep/prepunion.c b/src/backend/optimizer/prep/prepunion.c
index fb7bf9e7070..d2b91c2ec6d 100644
--- a/src/backend/optimizer/prep/prepunion.c
+++ b/src/backend/optimizer/prep/prepunion.c
@@ -14,7 +14,7 @@
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/optimizer/prep/prepunion.c,v 1.93 2003/04/24 23:43:09 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/backend/optimizer/prep/prepunion.c,v 1.94 2003/04/29 22:13:09 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -418,7 +418,8 @@ generate_setop_tlist(List *colTypes, int flag,
}
else
{
- expr = coerce_to_common_type(expr,
+ expr = coerce_to_common_type(NULL, /* no UNKNOWNs here */
+ expr,
colType,
"UNION/INTERSECT/EXCEPT");
colTypmod = -1;