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Comment:Documentation updates in preparation for 3.4.0. (CVS 4064)
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SHA1: 5232fd29d01d48d70b6d8f34ad5d0e2dde115fa0
User & Date: drh 2007-06-15 12:16:31.000
Context
2007-06-15
12:41
Clean up a variable in tkt2409.test that would cause subsequent tests to fail. (CVS 4065) (check-in: 0f944cb9fb user: drh tags: trunk)
12:16
Documentation updates in preparation for 3.4.0. (CVS 4064) (check-in: 5232fd29d0 user: drh tags: trunk)
12:06
Update the btree file format description in btreeInt.h. (CVS 4063) (check-in: 1ac160d3dc user: drh tags: trunk)
Changes
Side-by-Side Diff Ignore Whitespace Patch
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proc chng {date desc} {
  if {[regexp {\(([0-9.]+)\)} $date all vers]} {
    set label [string map {. _} $vers]
    puts "<A NAME=\"version_$label\">"
  }
  puts "<DT><B>$date</B></DT>"
  regsub -all {[Tt]icket #(\d+)} $desc \
      {<a href="http://www.sqlite.org/cvstrac/tktview?tn=\1">\0</a>} desc
  puts "<DD><P><UL>$desc</UL></P></DD>"
  puts "<DD><P><UL>$desc</UL></P>"
  puts "</DD>"
}

chng {2007 June 15 (3.4.0)} {
<li>Fix a bug that can lead to database corruption if an SQLITE_BUSY error
    occurs in the middle of an explicit transaction and that transaction
    is later committed.  Ticket #2409.  See the
    <a href="http://www.sqlite.org/cvstrac/wiki?p=CorruptionFollowingBusyError">
    CorruptionFollowingBusyError</a> wiki page for details.</i>
<li>Added explicit <a href="limits.html">upper bounds</a> on the sizes and
    quantities of things SQLite can process.  This change might break some
    applications that use SQLite in the extreme, which is when the current
    release is 3.4.0 instead of 3.3.18.</li>
<li>Added support for <a href="capi3ref.html#sqlite3_blob_open">
    Incremental BLOB I/O</a>.</li>
<li>Added the <a href="capi3ref.html#sqlite3_bind_zeroblob">zeroblob API</a>
    and the <a href="lang_expr.html#zeroblob">zeroblob()</a> SQL function.</li>
<li>Added support for <a href="pragma.html#pragma_incremental_vacuum">
    Incremntal Vacuum</a>.</li>
<li>Added the SQLITE_MIXED_ENDIAN_64BIT_FLOAT compile-time option to suppport
    ARM7 processors with goofy endianness.</li>
<li>Removed all instances of sprintf() and strcpy() from the core library.</li>
<li>Added support for <a href="http://www.icu-project.org/">
    International Components for Unicode (ICU)</a> to the full-text search
    extensions.
</ul><p>
<ul type="circle">
<li>In the windows OS driver, reacquire a SHARED lock if an attempt to
    acquire an EXCLUSIVE lock fails.  Ticket #2354</li>
<li>Fix the REPLACE() function so that it returns NULL if the second argument
    is an empty string.  Ticket #2324.</li>
<li>Document the hazards of type coversions in
    <a href="capi3ref.html#sqlite3_column_blob">sqlite3_column_blob()</a>
    and related APIs.  Fix unnecessary type conversions.  Ticket #2321.</li>
<li>Internationalization of the TRIM() functin.  Ticket #2323</li>
<li>Use memmove() instead of memcpy() when moving between memory regions
    that might overlap.  Ticket #2334</li>
<li>Fix an optimizer bug involving subqueries in a compound SELECT that has
    both an ORDER BY and a LIMIT clause.  Ticket #2339.</li>
<li>Make sure the <a href="capi3ref.html#sqlite3_snprintf">sqlite3_snprintf()
    </a> interface does not zero-terminate the buffer if the buffer size is
    less than 1.  Ticket #2341</li>
<li>Fix the built-in printf logic so that it prints "NaN" not "Inf" for
    floating-point NaNs.  Ticket #2345</li>
<li>When converting BLOB to TEXT, use the text encoding of the main database.
    Ticket #2349</li>
<li>Keep the full precision of integers (if possible) when casting to
    NUMERIC.  Ticket #2364</li>
<li>Fix a bug in the handling of UTF16 codepoint 0xE000</li>
<li>Consider explicit collate clauses when matching WHERE constraints
    to indices in the query optimizer.  Ticket #2391</li>
<li>Fix the query optimizer to correctly handle constant expressions in 
    the ON clause of a LEFT JOIN.  Ticket #2403</li>
<li>Fix the query optimizer to handle rowid comparisions to NULL
    correctly.  Ticket #2404</li>
<li>Fix many potental segfaults that could be caused by malicious SQL
    statements.</li>
}

chng {2007 April 25 (3.3.17)} {
<li>When the "write_version" value of the database header is larger than
    what the library understands, make the database read-only instead of
    unreadable.</li>
<li>Other minor bug fixes</li>
︙
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proc newsitem {date title text} {
  puts "<h3>$date - $title</h3>"
  regsub -all "\n( *\n)+" $text "</p>\n\n<p>" txt
  puts "<p>$txt</p>"
  puts "<hr width=\"50%\">"
}

newsitem {2007-Jun-15} {Version 3.4.0} {
  This release fixes a bug that can lead to database corruption.  Upgrading
  is strongly recommended.  If you must continue using an older version
  of SQLite, please at least read
  <a href="http://www.sqlite.org/cvstrac/wiki?p=CorruptionFollowingBusyError">
  how to avoid the bug</a>.
  <p>
  This release also adds explicit <a href="limits.html">limits</a> on the
  sizes and quantities of things SQLite will handle.  The new limits might
  causes minor problems for some existing applications that push the
  envelope, which is the reason that this release is 3.4.0 instead of 3.3.18.
  </p>
  There are also new features, including
  <a href="capi3ref.html#sqlite3_blob_open">incremental BLOB I/O</a> and
  <a href="pragma.html#pragma_incremental_vacuum">incremental vacuum</a>.
  See the <a href="changes.html">change log</a> for additional information.
}

newsitem {2007-Apr-25} {Version 3.3.17} {
  This version fixes a bug in the forwards-compatibility logic of SQLite
  that was causing a database to become unreadable when it should have
  been read-only.  Upgrade from 3.3.16 only if you plan to deploy into
  a product that might need to be upgraded in the future.  For day to day
  use, it probably does not matter.
}

newsitem {2007-Apr-18} {Version 3.3.16} {
  Performance improvements added in 3.3.14 but mistakenly turned off
  in 3.3.15 have been reinstated.  A bug has been fixed that prevented 
  VACUUM from running if a NULL value was in a UNIQUE column.
}

newsitem {2007-Apr-09} {Version 3.3.15} {
  An annoying bug introduced in 3.3.14 has been fixed.  There are
  also many enhancements to the test suite.  
}

newsitem {2007-Apr-02} {Version 3.3.14} {
  This version focuses on performance improvements.  If you recompile
  <a href="http://www.sqlite.org/cvstrac/wiki?p=TheAmalgamation">
  the amalgamation</a> using GCC option -O3 (the precompiled binaries
  use -O2) you may see performance
  improvements of 35% or more over version 3.3.13 depending on your
  workload.  This version also
  adds support for <a href="pragma.html#pragma_locking_mode">
  exclusive access mode</a>.
}

newsitem {2007-Feb-13} {Version 3.3.13} {
  This version fixes a subtle bug in the ORDER BY optimizer that can 
  occur when using joins.  There are also a few minor enhancements.
  Upgrading is recommended.
}

newsitem {2007-Jan-27} {Version 3.3.12} {
  The first published build of the previous version used the wrong
  set of source files.  Consequently, many people downloaded a build
  that was labeled as "3.3.11" but was really 3.3.10.  Version 3.3.12
  is released to clear up the ambiguity.  A couple more bugs have
  also been fixed and <a href="pragma.html#pragma_integrity_check">
  PRAGMA integrity_check</a> has been enhanced.
}

puts {
<p align="right"><a href="oldnews.html">Old news...</a></p>
</td></tr></table>
}
footer {$Id: index.tcl,v 1.155 2007/06/09 09:53:51 drh Exp $}
footer {$Id: index.tcl,v 1.156 2007/06/15 12:16:32 drh Exp $}
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#
# Run this Tcl script to generate the lang-*.html files.
#
set rcsid {$Id: lang.tcl,v 1.129 2007/05/15 01:13:47 drh Exp $}
set rcsid {$Id: lang.tcl,v 1.130 2007/06/15 12:16:32 drh Exp $}
source common.tcl

if {[llength $argv]>0} {
  set outputdir [lindex $argv 0]
} else {
  set outputdir ""
}
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<tr>
<td valign="top" align="right">upper(<i>X</i>)</td>
<td valign="top">Return a copy of input string <i>X</i> converted to all
upper-case letters.  The implementation of this function uses the C library
routine <b>toupper()</b> which means it may not work correctly on 
UTF-8 strings.</td>
</tr>

<tr>
<td valign="top" align="right">zeroblob(<i>N</i>)</td>
<td valign="top"><a name="zeroblob">
Return a BLOB consisting of N bytes of 0x00.  SQLite
manages these zeroblobs very efficiently.  Zeroblobs can be use to
reserve space for a BLOB that is later written using 
<a href="capi3ref.html#sqlite3_blob_open">incremental BLOB I/O</a>.</td>
</tr>

</table>

<b>Date And Time Functions</b>

<p>Date and time functions are documented in the 
<a href="http://www.sqlite.org/cvstrac/wiki?p=DateAndTimeFunctions">
SQLite Wiki</a>.</p>
︙
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#!/usr/bin/tclsh
source common.tcl
header {SQLite Older News}

proc newsitem {date title text} {
  puts "<h3>$date - $title</h3>"
  regsub -all "\n( *\n)+" $text "</p>\n\n<p>" txt
  puts "<p>$txt</p>"
  puts "<hr width=\"50%\">"
}


newsitem {2007-Apr-09} {Version 3.3.15} {
  An annoying bug introduced in 3.3.14 has been fixed.  There are
  also many enhancements to the test suite.  
}

newsitem {2007-Apr-02} {Version 3.3.14} {
  This version focuses on performance improvements.  If you recompile
  <a href="http://www.sqlite.org/cvstrac/wiki?p=TheAmalgamation">
  the amalgamation</a> using GCC option -O3 (the precompiled binaries
  use -O2) you may see performance
  improvements of 35% or more over version 3.3.13 depending on your
  workload.  This version also
  adds support for <a href="pragma.html#pragma_locking_mode">
  exclusive access mode</a>.
}

newsitem {2007-Feb-13} {Version 3.3.13} {
  This version fixes a subtle bug in the ORDER BY optimizer that can 
  occur when using joins.  There are also a few minor enhancements.
  Upgrading is recommended.
}

newsitem {2007-Jan-27} {Version 3.3.12} {
  The first published build of the previous version used the wrong
  set of source files.  Consequently, many people downloaded a build
  that was labeled as "3.3.11" but was really 3.3.10.  Version 3.3.12
  is released to clear up the ambiguity.  A couple more bugs have
  also been fixed and <a href="pragma.html#pragma_integrity_check">
  PRAGMA integrity_check</a> has been enhanced.
}

newsitem {2007-Jan-22} {Version 3.3.11} {
  Version 3.3.11 fixes for a few more problems in version 3.3.9 that
  version 3.3.10 failed to catch.  Upgrading is recommended.
}

newsitem {2007-Jan-9} {Version 3.3.10} {
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  changes to both the C-language API and the underlying file format
  that will enable SQLite to better support internationalization.
  The first beta is schedule for release on 2004-July-01.

  Plans are to continue to support SQLite version 2.8 with
  bug fixes.  But all new development will occur in version 3.0.
}
footer {$Id: oldnews.tcl,v 1.20 2007/04/09 13:18:47 drh Exp $}
footer {$Id: oldnews.tcl,v 1.21 2007/06/15 12:16:32 drh Exp $}