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Optimize queries of the form "SELECT count(*) FROM <tbl>" by adding a sqlite3BtreeCount() interface to the btree layer. (CVS 6316)

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FossilOrigin-Name: d4aa6593183224b6868a322511511c0bbf63b598
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danielk1977
2009-02-24 10:01:51 +00:00
parent e2d7b24d08
commit a55331620e
9 changed files with 259 additions and 104 deletions
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src/sqliteInt.h
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@@ -11,7 +11,7 @@
*************************************************************************
** Internal interface definitions for SQLite.
**
** @(#) $Id: sqliteInt.h,v 1.836 2009/02/23 17:33:50 danielk1977 Exp $
** @(#) $Id: sqliteInt.h,v 1.837 2009/02/24 10:01:52 danielk1977 Exp $
*/
#ifndef _SQLITEINT_H_
#define _SQLITEINT_H_
@@ -887,6 +887,7 @@ struct FuncDef {
#define SQLITE_FUNC_EPHEM 0x04 /* Ephemeral. Delete with VDBE */
#define SQLITE_FUNC_NEEDCOLL 0x08 /* sqlite3GetFuncCollSeq() might be called */
#define SQLITE_FUNC_PRIVATE 0x10 /* Allowed for internal use only */
#define SQLITE_FUNC_COUNT 0x20 /* Built-in count(*) aggregate */
/*
** The following three macros, FUNCTION(), LIKEFUNC() and AGGREGATE() are