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Scan the table backwards if there is an ORDER BY ... DESC clause that can

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be satisfied by an index. (CVS 795)

FossilOrigin-Name: c7a3487981de0ed5b43ea3ff4d46ab4437068dca
This commit is contained in:
drh
2002-12-04 20:01:06 +00:00
parent 2dcc9aa2a8
commit c045ec51be
5 changed files with 135 additions and 47 deletions
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3
src/sqliteInt.h
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@@ -11,7 +11,7 @@
*************************************************************************
** Internal interface definitions for SQLite.
**
** @(#) $Id: sqliteInt.h,v 1.149 2002/11/20 11:55:19 drh Exp $
** @(#) $Id: sqliteInt.h,v 1.150 2002/12/04 20:01:06 drh Exp $
*/
#include "config.h"
#include "sqlite.h"
@@ -614,6 +614,7 @@ struct WhereLevel {
int iLeftJoin; /* Memory cell used to implement LEFT OUTER JOIN */
int top; /* First instruction of interior of the loop */
int inOp, inP1, inP2;/* Opcode used to implement an IN operator */
int bRev; /* Do the scan in the reverse direction */
};
/*