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Postgres FD Implementation
Commit 6562fa85 authored by Marc G. Fournier's avatar Marc G. Fournier
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Fixes: 

'select distinct on' causes backend to crash

submitted by: Chris Dunlop    chris@onthe.net.au
parent 9bffaade
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Showing with 4 additions and 4 deletions
src/backend/executor/nodeUnique.c
View file @ 6562fa85
......@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/executor/nodeUnique.c,v 1.1.1.1 1996/07/09 06:21:27 scrappy Exp $
* $Header: /cvsroot/pgsql/src/backend/executor/nodeUnique.c,v 1.2 1996/07/19 06:27:59 scrappy Exp $
*
*-------------------------------------------------------------------------
*/
......@@ -124,7 +124,7 @@ ExecUnique(Unique *node)
if (uniqueAttr) {
tupDesc = ExecGetResultType(uniquestate);
typoutput = typtoout((Oid)tupDesc->attrs[uniqueAttrNum]->atttypid);
typoutput = typtoout((Oid)tupDesc->attrs[uniqueAttrNum-1]->atttypid);
}
/* ----------------
......@@ -174,8 +174,8 @@ ExecUnique(Unique *node)
if (isNull1 == isNull2) {
if (isNull1) /* both are null, they are equal */
continue;
val1 = fmgr(typoutput, attr1, gettypelem(tupDesc->attrs[uniqueAttrNum]->atttypid));
val2 = fmgr(typoutput, attr2, gettypelem(tupDesc->attrs[uniqueAttrNum]->atttypid));
val1 = fmgr(typoutput, attr1, gettypelem(tupDesc->attrs[uniqueAttrNum-1]->atttypid));
val2 = fmgr(typoutput, attr2, gettypelem(tupDesc->attrs[uniqueAttrNum-1]->atttypid));
/* now, val1 and val2 are ascii representations so we can
use strcmp for comparison */
if (strcmp(val1,val2) == 0) /* they are equal */
......
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