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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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3
src/backend/nodes/copyfuncs.c
View File

@@ -15,7 +15,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/nodes/copyfuncs.c,v 1.345 2006/08/02 01:59:45 joe Exp $
* $PostgreSQL: pgsql/src/backend/nodes/copyfuncs.c,v 1.346 2006/08/10 02:36:28 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -1793,6 +1793,7 @@ _copySetOperationStmt(SetOperationStmt *from)
COPY_NODE_FIELD(larg);
COPY_NODE_FIELD(rarg);
COPY_NODE_FIELD(colTypes);
COPY_NODE_FIELD(colTypmods);
return newnode;
}

3
src/backend/nodes/equalfuncs.c
View File

@@ -18,7 +18,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/nodes/equalfuncs.c,v 1.279 2006/08/02 01:59:45 joe Exp $
* $PostgreSQL: pgsql/src/backend/nodes/equalfuncs.c,v 1.280 2006/08/10 02:36:28 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -743,6 +743,7 @@ _equalSetOperationStmt(SetOperationStmt *a, SetOperationStmt *b)
COMPARE_NODE_FIELD(larg);
COMPARE_NODE_FIELD(rarg);
COMPARE_NODE_FIELD(colTypes);
COMPARE_NODE_FIELD(colTypmods);
return true;
}

3
src/backend/nodes/outfuncs.c
View File

@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/nodes/outfuncs.c,v 1.280 2006/08/02 01:59:45 joe Exp $
* $PostgreSQL: pgsql/src/backend/nodes/outfuncs.c,v 1.281 2006/08/10 02:36:28 tgl Exp $
*
* NOTES
* Every node type that can appear in stored rules' parsetrees *must*
@@ -1574,6 +1574,7 @@ _outSetOperationStmt(StringInfo str, SetOperationStmt *node)
WRITE_NODE_FIELD(larg);
WRITE_NODE_FIELD(rarg);
WRITE_NODE_FIELD(colTypes);
WRITE_NODE_FIELD(colTypmods);
}
static void

3
src/backend/nodes/readfuncs.c
View File

@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/nodes/readfuncs.c,v 1.193 2006/08/02 01:59:45 joe Exp $
* $PostgreSQL: pgsql/src/backend/nodes/readfuncs.c,v 1.194 2006/08/10 02:36:28 tgl Exp $
*
* NOTES
* Path and Plan nodes do not have any readfuncs support, because we
@@ -245,6 +245,7 @@ _readSetOperationStmt(void)
READ_NODE_FIELD(larg);
READ_NODE_FIELD(rarg);
READ_NODE_FIELD(colTypes);
READ_NODE_FIELD(colTypmods);
READ_DONE();
}