Partial fix for select distinct in subselect.

bmomjian · bmomjian · commit e4fd53464512 · 1998-02-23T02:54:11.000Z
diff --git a/src/backend/nodes/copyfuncs.c b/src/backend/nodes/copyfuncs.c
@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/nodes/copyfuncs.c,v 1.39 1998/02/21 06:31:40 scrappy Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/nodes/copyfuncs.c,v 1.40 1998/02/23 02:54:11 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -549,7 +549,10 @@ _copyUnique(Unique *from)
 	 *	copy remainder of node
 	 * ----------------
 	 */
-	newnode->uniqueAttr = pstrdup(from->uniqueAttr);
+	if (newnode->uniqueAttr)
+		newnode->uniqueAttr = pstrdup(from->uniqueAttr);
+	else
+		newnode->uniqueAttr = NULL;
 	newnode->uniqueAttrNum = from->uniqueAttrNum;
 	Node_Copy(from, newnode, uniquestate);
 

Original file line number	Diff line number	Diff line change
`@@ -7,7 +7,7 @@`
`7`	`7`	`*`
`8`	`8`	`*`
`9`	`9`	`* IDENTIFICATION`
`10`		`- * $Header: /cvsroot/pgsql/src/backend/nodes/copyfuncs.c,v 1.39 1998/02/21 06:31:40 scrappy Exp $`
	`10`	`+ * $Header: /cvsroot/pgsql/src/backend/nodes/copyfuncs.c,v 1.40 1998/02/23 02:54:11 momjian Exp $`
`11`	`11`	`*`
`12`	`12`	`*-------------------------------------------------------------------------`
`13`	`13`	`*/`
`@@ -549,7 +549,10 @@ _copyUnique(Unique *from)`
`549`	`549`	`* copy remainder of node`
`550`	`550`	`* ----------------`
`551`	`551`	`*/`
`552`		`- newnode->uniqueAttr = pstrdup(from->uniqueAttr);`
	`552`	`+ if (newnode->uniqueAttr)`
	`553`	`+ newnode->uniqueAttr = pstrdup(from->uniqueAttr);`
	`554`	`+ else`
	`555`	`+ newnode->uniqueAttr = NULL;`
`553`	`556`	`newnode->uniqueAttrNum = from->uniqueAttrNum;`
`554`	`557`	`Node_Copy(from, newnode, uniquestate);`
`555`	`558`