database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-28 23:42:10 +03:00
Code Activity

Adjust amrescan code so that it's allowed to call index_rescan with a

Browse Source 
NULL key pointer, indicating that the existing scan key should be reused.
This behavior isn't used yet but will be needed for my planned fix to
the keys_are_unique code.
This commit is contained in:
Tom Lane
2003-03-23 23:01:03 +00:00
parent cb1672e9f8
commit 0489783011
5 changed files with 63 additions and 72 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
src/backend/access/nbtree/nbtree.c
View File

@ -12,7 +12,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtree.c,v 1.101 2003/03/04 21:51:20 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtree.c,v 1.102 2003/03/23 23:01:03 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -396,6 +396,7 @@ btrescan(PG_FUNCTION_ARGS)
so->keyData = (ScanKey) palloc(scan->numberOfKeys * sizeof(ScanKeyData));
else
so->keyData = (ScanKey) NULL;
so->numberOfKeys = scan->numberOfKeys;
scan->opaque = so;
}
@ -420,12 +421,12 @@ btrescan(PG_FUNCTION_ARGS)
* Reset the scan keys. Note that keys ordering stuff moved to
* _bt_first. - vadim 05/05/97
*/
so->numberOfKeys = scan->numberOfKeys;
if (scan->numberOfKeys > 0)
if (scankey && scan->numberOfKeys > 0)
{
memmove(scan->keyData,
scankey,
scan->numberOfKeys * sizeof(ScanKeyData));
so->numberOfKeys = scan->numberOfKeys;
memmove(so->keyData,
scankey,
so->numberOfKeys * sizeof(ScanKeyData));