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Overview
Comment:Memory DB works with autovacuum. (CVS 3041)
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SHA1: 34dff874a2bf8331be87310809ba11d813fadb7d
User & Date: drh 2006-01-30 22:48:44.000
Context
2006-01-30
23:04
Remove support for the non-standard ON CONFLICT clause on CREATE INDEX. Ticket #1486. The ON CONFLICT clause has never worked on CREATE INDEX so removing it should not break anything. (CVS 3042) (check-in: 669bcf5ab6 user: drh tags: trunk)
22:48
Memory DB works with autovacuum. (CVS 3041) (check-in: 34dff874a2 user: drh tags: trunk)
22:35
Make sure the 3rd parameter to sqlite3_prepare() is honored. Ticket #1650. (CVS 3040) (check-in: 9d53cc880f user: drh tags: trunk)
Changes
Unified Diff Ignore Whitespace Patch
Changes to src/pager.c.
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** The pager is used to access a database disk file.  It implements
** atomic commit and rollback through the use of a journal file that
** is separate from the database file.  The pager also implements file
** locking to prevent two processes from writing the same database
** file simultaneously, or one process from reading the database while
** another is writing.
**
** @(#) $Id: pager.c,v 1.256 2006/01/24 13:09:33 danielk1977 Exp $
*/
#ifndef SQLITE_OMIT_DISKIO
#include "sqliteInt.h"
#include "os.h"
#include "pager.h"
#include <assert.h>
#include <string.h>








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** The pager is used to access a database disk file.  It implements
** atomic commit and rollback through the use of a journal file that
** is separate from the database file.  The pager also implements file
** locking to prevent two processes from writing the same database
** file simultaneously, or one process from reading the database while
** another is writing.
**
** @(#) $Id: pager.c,v 1.257 2006/01/30 22:48:44 drh Exp $
*/
#ifndef SQLITE_OMIT_DISKIO
#include "sqliteInt.h"
#include "os.h"
#include "pager.h"
#include <assert.h>
#include <string.h>
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      rc = pPager->errCode;
      return rc;
    }

    /* Populate the page with data, either by reading from the database
    ** file, or by setting the entire page to zero.
    */
    if( sqlite3pager_pagecount(pPager)<(int)pgno ){
      memset(PGHDR_TO_DATA(pPg), 0, pPager->pageSize);
    }else{
      assert( MEMDB==0 );
      rc = sqlite3OsSeek(pPager->fd, (pgno-1)*(i64)pPager->pageSize);
      if( rc==SQLITE_OK ){
        rc = sqlite3OsRead(pPager->fd, PGHDR_TO_DATA(pPg),
                              pPager->pageSize);








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      rc = pPager->errCode;
      return rc;
    }

    /* Populate the page with data, either by reading from the database
    ** file, or by setting the entire page to zero.
    */
    if( sqlite3pager_pagecount(pPager)<(int)pgno || MEMDB ){
      memset(PGHDR_TO_DATA(pPg), 0, pPager->pageSize);
    }else{
      assert( MEMDB==0 );
      rc = sqlite3OsSeek(pPager->fd, (pgno-1)*(i64)pPager->pageSize);
      if( rc==SQLITE_OK ){
        rc = sqlite3OsRead(pPager->fd, PGHDR_TO_DATA(pPg),
                              pPager->pageSize);
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Changes to test/memdb.test. 
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# 2001 September 15
#
# The author disclaims copyright to this source code.  In place of
# a legal notice, here is a blessing:
#
#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this script is in-memory database backend.
#
# $Id: memdb.test,v 1.14 2006/01/17 09:35:02 danielk1977 Exp $


set testdir [file dirname $argv0]
source $testdir/tester.tcl

ifcapable memorydb {















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# 2001 September 15
#
# The author disclaims copyright to this source code.  In place of
# a legal notice, here is a blessing:
#
#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this script is in-memory database backend.
#
# $Id: memdb.test,v 1.15 2006/01/30 22:48:44 drh Exp $


set testdir [file dirname $argv0]
source $testdir/tester.tcl

ifcapable memorydb {
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    do_test memdb-7.2.$i {
       execsql "DELETE FROM t6 WHERE x=\
                (SELECT x FROM t6 ORDER BY random() LIMIT 1)"
       execsql {SELECT count(*) FROM t6}
    } [expr {256-$i}]
  }
}

























} ;# ifcapable memorydb

finish_test








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    do_test memdb-7.2.$i {
       execsql "DELETE FROM t6 WHERE x=\
                (SELECT x FROM t6 ORDER BY random() LIMIT 1)"
       execsql {SELECT count(*) FROM t6}
    } [expr {256-$i}]
  }
}

# Ticket #1524
#
do_test memdb-8.1 {
  db close
  sqlite3 db {:memory:}
  execsql {
    PRAGMA auto_vacuum=TRUE;
    CREATE TABLE t1(a);
    INSERT INTO t1 VALUES(randstr(5000,6000));
    INSERT INTO t1 VALUES(randstr(5000,6000));
    INSERT INTO t1 VALUES(randstr(5000,6000));
    INSERT INTO t1 VALUES(randstr(5000,6000));
    INSERT INTO t1 VALUES(randstr(5000,6000));
    SELECT count(*) FROM t1;
  }
} 5
do_test memdb-8.2 {
  execsql {
    DELETE FROM t1;
    SELECT count(*) FROM t1;
  }
} 0


} ;# ifcapable memorydb

finish_test