SQLite

  $(TOP)/src/vdbe.h \
  $(TOP)/src/where.c

# Source code to the test files.
#
TESTSRC = \
  $(TOP)/src/btree.c \
  $(TOP)/src/func.c \
  $(TOP)/src/os.c \
  $(TOP)/src/pager.c \
  $(TOP)/src/test1.c \
  $(TOP)/src/test2.c \
  $(TOP)/src/test3.c \
  $(TOP)/src/md5.c

2.6.3

/*
** 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.
**
*************************************************************************
** $Id: btree.c,v 1.70 2002/08/13 00:01:17 drh Exp $
**
** This file implements a external (disk-based) database using BTrees.
** For a detailed discussion of BTrees, refer to
**
**     Donald E. Knuth, THE ART OF COMPUTER PROGRAMMING, Volume 3:
**     "Sorting And Searching", pages 473-480. Addison-Wesley
**     Publishing Company, Reading, Massachusetts.

** native byte order or in non-native byte order.  Non-native byte order
** databases are created for testing purposes only.  Under normal operation,
** only native byte-order databases should be created, but we should be
** able to read or write existing databases regardless of the byteorder.
*/
#ifdef SQLITE_TEST
int btree_native_byte_order = 1;
#else
# define btree_native_byte_order 1
#endif

/*
** Forward declarations of structures used only in this file.
*/
typedef struct PageOne PageOne;
typedef struct MemPage MemPage;

  if( rc ) return rc;
  rc = sqlitepager_write(pRoot);
  if( rc ){
    sqlitepager_unref(pRoot);
    return rc;
  }
  strcpy(pP1->zMagic, zMagicHeader);

  if( btree_native_byte_order ){
    pP1->iMagic = MAGIC;
    pBt->needSwab = 0;
  }else{
    pP1->iMagic = swab32(MAGIC);
    pBt->needSwab = 1;
  }




  zeroPage(pBt, pRoot);
  sqlitepager_unref(pRoot);
  return SQLITE_OK;
}

/*
** Attempt to start a new transaction.

** 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 1.51 2002/08/13 00:01:17 drh Exp $
*/
#include "sqliteInt.h"
#include "pager.h"
#include "os.h"
#include <assert.h>
#include <string.h>

/*
** The following integer, if set, causes journals to be written in the
** old format.  This is used for testing purposes only - to make sure
** the code is able to rollback an old journal.
*/
#ifdef SQLITE_TEST
int pager_old_format = 0;
#else
# define pager_old_format 0
#endif

/*
** Hash a page number
*/
#define pager_hash(PN)  ((PN)%N_PG_HASH)

/*
** Enable reference count tracking here:
*/
#ifdef SQLITE_TEST
  int pager_refinfo_enable = 0;
  static void pager_refinfo(PgHdr *p){
    static int cnt = 0;
    if( !pager_refinfo_enable ) return;
    printf(
       "REFCNT: %4d addr=0x%08x nRef=%d\n",
       p->pgno, (int)PGHDR_TO_DATA(p), p->nRef

/*
** Write a 32-bit integer into the given file descriptor.  Writing
** is always done using the new journal format.
*/
static int write32bits(OsFile *fd, u32 val){
  unsigned char ac[4];

  if( pager_old_format ){
    return sqliteOsWrite(fd, &val, 4);
  }

  ac[0] = (val>>24) & 0xff;
  ac[1] = (val>>16) & 0xff;
  ac[2] = (val>>8) & 0xff;
  ac[3] = val & 0xff;
  return sqliteOsWrite(fd, ac, 4);
}

    goto end_ckpt_playback;
  }
  nRec /= sizeof(PageRecord);
  
  /* Copy original pages out of the checkpoint journal and back into the
  ** database file.
  */
  if( pager_old_format ){
    pPager->journalFormat = SQLITE_OLD_JOURNAL_FORMAT;
  }else{
    pPager->journalFormat = SQLITE_NEW_JOURNAL_FORMAT;
  }
  for(i=nRec-1; i>=0; i--){
    rc = pager_playback_one_page(pPager, &pPager->cpfd);
    if( rc!=SQLITE_OK ) goto end_ckpt_playback;
  }

  /* Figure out how many pages need to be copied out of the transaction
  ** journal.

    pPager->journalOpen = 1;
    pPager->needSync = 0;
    pPager->dirtyFile = 0;
    pPager->alwaysRollback = 0;
    pPager->state = SQLITE_WRITELOCK;
    sqlitepager_pagecount(pPager);
    pPager->origDbSize = pPager->dbSize;

    if( pager_old_format ){
      rc = sqliteOsWrite(&pPager->jfd, aOldJournalMagic,
                         sizeof(aOldJournalMagic));
    }else{
      rc = sqliteOsWrite(&pPager->jfd, aJournalMagic, sizeof(aJournalMagic));
    }



    if( rc==SQLITE_OK ){
      rc = write32bits(&pPager->jfd, pPager->dbSize);
    }
    if( rc!=SQLITE_OK ){
      rc = pager_unwritelock(pPager);
      if( rc==SQLITE_OK ) rc = SQLITE_FULL;
    }

    sqlitepager_ckpt_commit(pPager);
  }else{
    rc = SQLITE_OK;
  }
  return rc;
}

#ifdef SQLITE_TEST
/*
** Print a listing of all referenced pages and their ref count.
*/
void sqlitepager_refdump(Pager *pPager){
  PgHdr *pPg;
  for(pPg=pPager->pAll; pPg; pPg=pPg->pNextAll){
    if( pPg->nRef<=0 ) continue;
    printf("PAGE %3d addr=0x%08x nRef=%d\n", 
       pPg->pgno, (int)PGHDR_TO_DATA(pPg), pPg->nRef);
  }
}
#endif

# 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 database locks.
#
# $Id: trans.test,v 1.15 2002/08/13 00:01:18 drh Exp $


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


# Create several tables to work with.

  if {$i<$limit} {
    do_test trans-9.$i.9-$cnt {
       execsql {
         INSERT INTO t3 SELECT randstr(10,400) FROM t3 WHERE random()%10==0;
       }
    } {}
  }
  set ::pager_old_format 0
}
   
finish_test

    INSERT INTO tbl VALUES(100, 200, 300);
  }
  db changes
} {1}
execsql {
  DROP TABLE tbl;
}


# Handling of ON CONFLICT by INSERT statements inside triggers
execsql {
  CREATE TABLE tbl (a primary key, b, c);
  CREATE TRIGGER ai_tbl AFTER INSERT ON tbl BEGIN
    INSERT OR IGNORE INTO tbl values (new.a, 0, 0);
  END;

}


proc chng {date desc} {
  puts "<DT><B>$date</B></DT>"
  puts "<DD><P><UL>$desc</UL></P></DD>"
}

chng {2002 Aug 12 (2.6.3)} {
<li>Add the ability to read both little-endian and big-endian databases.
    So database created under SunOS or MacOSX can be read and written
    under Linux or Windows and vice versa.</li>
<li>Convert to the new website: http://www.sqlite.org/</li>
<li>Allow transactions to span Linux Threads</li>
<li>Bug fix in the processing of the ORDER BY clause for GROUP BY queries</li>
}

chng {2002 Jly 30 (2.6.2)} {
<li>Text files read by the COPY command can now have line terminators
    of LF,  CRLF, or CR.</li>
<li>SQLITE_BUSY is handled correctly if encountered during database
    initialization.</li>
<li>Fix to UPDATE triggers on TEMP tables.</li>

#
# Run this TCL script to generate HTML for the index.html file.
#
set rcsid {$Id: index.tcl,v 1.63 2002/08/13 00:01:18 drh Exp $}

puts {<html>
<head><title>SQLite: An SQL Database Engine In A C Library</title></head>
<body bgcolor=white>
<h1 align=center>SQLite: An SQL Database Engine In A C Library</h1>
<p align=center>}
puts "This page was last modified on [lrange $rcsid 3 4] UTC<br>"

}

puts {<h2>Features</h2>

<p><ul>
<li>Implements most of SQL92.</li>
<li>A complete database (with multiple tables and indices) is
    stored in a single disk file.</li>
<li>Atomic commit and rollback protect data integrity.</li>
<li>Database files can be freely shared between machines with
    different byte orders.</li>
<li>Small memory footprint: less than 25K lines of C code.</li>
<li><a href="speed.html">Four times faster</a> than PostgreSQL.
    Twice as fast as SQLite 1.0.</li>
<li>Very simple 
<a href="c_interface.html">C/C++ interface</a> requires the use of only
three functions and one opaque structure.</li>
<li><a href="tclsqlite.html">TCL bindings</a> included.</li>
<li>Simple, well-commented source code.</li>
<li>A TCL-based test suite provides near 100% code coverage.</li>
<li>Self-contained: no external dependencies.</li>
<li>Built and tested under Linux and Win2K.</li>
<li>Sources are uncopyrighted.  Use for any purpose.</li>
</ul>
</p>
}

























puts {<h2>Current Status</h2>

<p>A <a href="changes.html">Change Summary</a> is available on this
website.  You can also access a detailed
<a href="http://cvs.hwaci.com:2080/sqlite/timeline">change history</a>,
<a href="http://cvs.hwaci.com:2080/sqlite/rptview?rn=2">view open bugs</a>,
or

<p>
Whenever either of the first two digits in the version number
for SQLite change, it means that the underlying file format
has changed.  See <a href="formatchng.html">formatchng.html</a>
for additional information.
</p>
}

puts {<h2>Database File Format Change - Version 2.6.0 - 2002 July 17</h2>

<p>Beginning with version 2.6.0, the SQLite database file format changed
in an incompatible way.  If you open a database file from version 2.5.6
or earlier with version 2.6.0 or later of the library, then the file format
will be converted automatically.  This is an irreversible operation.  Once
the conversion occurs, you will no longer be able to access the database
file from older versions of the library.  If the database is large, the
conversion might take some time. (Allow 1 to 2 seconds per megabyte
of database under Linux.) If the database is read-only,
the conversion cannot occur and the attempt to open the database will
fail.
It is suggested that you make backup copies of older database files
before attempting to open them with version 2.6.0 or later of the library.</p>
}

puts {<h2>Documentation</h2>

<p>The following documentation is currently available:</p>

<p><ul>
<li><a href="faq.html">Frequently Asked Questions</a> are available online.</li>
<li>Information on the <a href="sqlite.html">sqlite</a>
    command-line utility.</li>

$ make                       <i> Builds "sqlite" and "libsqlite.a" </i>
$ make test                  <i> Optional: run regression tests </i>
</pre></blockquote>
}

puts {<h2>Related Sites</h2>

<p>
For information bindings of SQLite to other programming languages
(Perl, Python, Ruby, PHP, etc.) and for a list of programs currently
using SQLite, visit the Wiki documentation at:
</p>


<blockquote>
<a href="http://cvs.hwaci.com:2080/sqlite/wiki">
http://cvs.hwaci.com:2080/sqlite/wiki</a>
</blockquote>
}





puts {
</body></html>}