diff options
Diffstat (limited to 'src/backend/access/gist/gistget.c')
| -rw-r--r-- | src/backend/access/gist/gistget.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/src/backend/access/gist/gistget.c b/src/backend/access/gist/gistget.c index 596c11e41e8..63b09a961f4 100644 --- a/src/backend/access/gist/gistget.c +++ b/src/backend/access/gist/gistget.c @@ -8,7 +8,7 @@ * Portions Copyright (c) 1994, Regents of the University of California * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/access/gist/gistget.c,v 1.36.4.1 2004/08/27 17:47:56 tgl Exp $ + * $Header: /cvsroot/pgsql/src/backend/access/gist/gistget.c,v 1.36.4.2 2005/08/30 08:36:52 teodor Exp $ * *------------------------------------------------------------------------- */ @@ -167,10 +167,18 @@ gistnext(IndexScanDesc s, ScanDirection dir) maxoff = PageGetMaxOffsetNumber(p); po = (GISTPageOpaque) PageGetSpecialPointer(p); - if (ScanDirectionIsBackward(dir)) - n = OffsetNumberPrev(stk->gs_child); - else - n = OffsetNumberNext(stk->gs_child); + if ( stk->gs_child == InvalidOffsetNumber ) { + /* rescan page */ + if (ScanDirectionIsBackward(dir)) + n = PageGetMaxOffsetNumber(p); + else + n = FirstOffsetNumber; + } else { + if (ScanDirectionIsBackward(dir)) + n = OffsetNumberPrev(stk->gs_child); + else + n = OffsetNumberNext(stk->gs_child); + } so->s_stack = stk->gs_parent; pfree(stk); |