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The 1st step to implement new type of scan,TidScan.

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Now WHERE restriction on ctid is allowed though it is
sequentially scanned.
This commit is contained in:
Hiroshi Inoue
1999-10-11 06:28:29 +00:00
parent 65a2c8f5b8
commit 05d13cad28
6 changed files with 238 additions and 10 deletions
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3
src/include/access/heapam.h
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@@ -6,7 +6,7 @@
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: heapam.h,v 1.46 1999/09/18 19:08:13 tgl Exp $
* $Id: heapam.h,v 1.47 1999/10/11 06:28:29 inoue Exp $
*
*-------------------------------------------------------------------------
*/
@@ -256,6 +256,7 @@ extern void heap_rescan(HeapScanDesc scan, bool scanFromEnd, ScanKey key);
extern void heap_endscan(HeapScanDesc scan);
extern HeapTuple heap_getnext(HeapScanDesc scandesc, int backw);
extern void heap_fetch(Relation relation, Snapshot snapshot, HeapTuple tup, Buffer *userbuf);
extern ItemPointer heap_get_latest_tid(Relation relation, Snapshot snapshot, ItemPointer tid);
extern Oid heap_insert(Relation relation, HeapTuple tup);
extern int heap_delete(Relation relation, ItemPointer tid, ItemPointer ctid);
extern int heap_replace(Relation relation, ItemPointer otid, HeapTuple tup,