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Fix UNION/INTERSECT/EXCEPT so that when two inputs being merged have

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same data type and same typmod, we show that typmod as the output
typmod, rather than generic -1.  This responds to several complaints
over the past few years about UNIONs unexpectedly dropping length or
precision info.
This commit is contained in:
Tom Lane
2006-08-10 02:36:29 +00:00
parent e860e746e1
commit 0ee26100b6
11 changed files with 79 additions and 35 deletions
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5
src/include/nodes/parsenodes.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/nodes/parsenodes.h,v 1.320 2006/08/02 01:59:47 joe Exp $
* $PostgreSQL: pgsql/src/include/nodes/parsenodes.h,v 1.321 2006/08/10 02:36:29 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -769,7 +769,8 @@ typedef struct SetOperationStmt
/* Eventually add fields for CORRESPONDING spec here */
/* Fields derived during parse analysis: */
List *colTypes; /* list of OIDs of output column types */
List *colTypes; /* OID list of output column type OIDs */
List *colTypmods; /* integer list of output column typmods */
} SetOperationStmt;