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/*
 * Have to check is inserted heap tuple deleted one
 * (i.e. just moved to another place by vacuum)!
 */
This commit is contained in:
Vadim B. Mikheev 1999-04-12 16:56:08 +00:00
parent a2c96a16e4
commit 401293fcff
1 changed files with 19 additions and 4 deletions
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23
src/backend/access/nbtree/nbtinsert.c
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@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtinsert.c,v 1.36 1999/03/28 20:31:56 vadim Exp $
* $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtinsert.c,v 1.37 1999/04/12 16:56:08 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@ -100,11 +100,12 @@ l1:
if (!PageIsEmpty(page) && offset <= maxoff)
{
TupleDesc itupdesc;
BTItem btitem;
BTItem cbti;
HeapTupleData htup;
BTPageOpaque opaque;
Buffer nbuf;
BlockNumber blkno;
bool chtup = true;
itupdesc = RelationGetDescr(rel);
nbuf = InvalidBuffer;
@ -121,8 +122,22 @@ l1:
*/
while (_bt_isequal(itupdesc, page, offset, natts, itup_scankey))
{ /* they're equal */
btitem = (BTItem) PageGetItem(page, PageGetItemId(page, offset));
htup.t_self = btitem->bti_itup.t_tid;
/*
* Have to check is inserted heap tuple deleted one
* (i.e. just moved to another place by vacuum)!
*/
if (chtup)
{
htup.t_self = btitem->bti_itup.t_tid;
heap_fetch(heapRel, SnapshotDirty, &htup, &buffer);
if (htup.t_data == NULL) /* YES! */
break;
/* Live tuple was inserted */
ReleaseBuffer(buffer);
chtup = false;
}
cbti = (BTItem) PageGetItem(page, PageGetItemId(page, offset));
htup.t_self = cbti->bti_itup.t_tid;
heap_fetch(heapRel, SnapshotDirty, &htup, &buffer);
if (htup.t_data != NULL) /* it is a duplicate */
{