From 3dec14197bba4013e8688dfeea452388a9846587 Mon Sep 17 00:00:00 2001 From: Hiroshi Inoue Date: Wed, 9 Feb 2000 03:49:47 +0000 Subject: [PATCH] Enable backward sequential scan even after reaching EOF. --- src/backend/access/heap/heapam.c | 22 +--------------------- 1 file changed, 1 insertion(+), 21 deletions(-) diff --git a/src/backend/access/heap/heapam.c b/src/backend/access/heap/heapam.c index cc503c3251..d51705fa47 100644 --- a/src/backend/access/heap/heapam.c +++ b/src/backend/access/heap/heapam.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/access/heap/heapam.c,v 1.65 2000/01/26 05:55:56 momjian Exp $ + * $Header: /cvsroot/pgsql/src/backend/access/heap/heapam.c,v 1.66 2000/02/09 03:49:47 inoue Exp $ * * * INTERFACE ROUTINES @@ -848,11 +848,6 @@ heap_getnext(HeapScanDesc scandesc, int backw) if (scan->rs_ptup.t_data == scan->rs_ctup.t_data && BufferIsInvalid(scan->rs_pbuf)) { - if (BufferIsValid(scan->rs_nbuf)) - ReleaseBuffer(scan->rs_nbuf); - scan->rs_ntup.t_datamcxt = NULL; - scan->rs_ntup.t_data = NULL; - scan->rs_nbuf = UnknownBuffer; return NULL; } @@ -910,11 +905,6 @@ heap_getnext(HeapScanDesc scandesc, int backw) scan->rs_ptup.t_datamcxt = NULL; scan->rs_ptup.t_data = NULL; scan->rs_pbuf = InvalidBuffer; - if (BufferIsValid(scan->rs_nbuf)) - ReleaseBuffer(scan->rs_nbuf); - scan->rs_ntup.t_datamcxt = NULL; - scan->rs_ntup.t_data = NULL; - scan->rs_nbuf = InvalidBuffer; return NULL; } @@ -934,11 +924,6 @@ heap_getnext(HeapScanDesc scandesc, int backw) if (scan->rs_ctup.t_data == scan->rs_ntup.t_data && BufferIsInvalid(scan->rs_nbuf)) { - if (BufferIsValid(scan->rs_pbuf)) - ReleaseBuffer(scan->rs_pbuf); - scan->rs_ptup.t_datamcxt = NULL; - scan->rs_ptup.t_data = NULL; - scan->rs_pbuf = UnknownBuffer; HEAPDEBUG_3; /* heap_getnext returns NULL at end */ return NULL; } @@ -998,11 +983,6 @@ heap_getnext(HeapScanDesc scandesc, int backw) scan->rs_ntup.t_datamcxt = NULL; scan->rs_ntup.t_data = NULL; scan->rs_nbuf = InvalidBuffer; - if (BufferIsValid(scan->rs_pbuf)) - ReleaseBuffer(scan->rs_pbuf); - scan->rs_ptup.t_datamcxt = NULL; - scan->rs_ptup.t_data = NULL; - scan->rs_pbuf = InvalidBuffer; HEAPDEBUG_6; /* heap_getnext returning EOS */ return NULL; }