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Overview
SHA1 Hash:5d46117c19c0490b2c79405bf85e663cc2650b2c
Date: 2013-03-29 13:47:34
User: drh
Comment:Redate the 3.7.16.1 release to 2013-03-29.
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      http://www.sqlite.org/src/timeline</a>.</p>
    }
    hd_close_aux
    hd_enable_main 1
  }
}

chng {2013-04-03 (3.7.16.1)} {
<li>Fix for a bug in the ORDER BY optimizer that was introduced in
    [version 3.7.15] which would sometimes optimize out the sorting step
    when in fact the sort was required.
    Ticket [http://www.sqlite.org/src/info/a179fe7465 | a179fe7465]
<li>Fix a long-standing bug in the [CAST expression] that would recognize UTF16
    characters as digits even if their most-significant-byte was not zero.
    Ticket [http://www.sqlite.org/src/info/689137afb6da41 | 689137afb6da41].







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      http://www.sqlite.org/src/timeline</a>.</p>
    }
    hd_close_aux
    hd_enable_main 1
  }
}

chng {2013-03-29 (3.7.16.1)} {
<li>Fix for a bug in the ORDER BY optimizer that was introduced in
    [version 3.7.15] which would sometimes optimize out the sorting step
    when in fact the sort was required.
    Ticket [http://www.sqlite.org/src/info/a179fe7465 | a179fe7465]
<li>Fix a long-standing bug in the [CAST expression] that would recognize UTF16
    characters as digits even if their most-significant-byte was not zero.
    Ticket [http://www.sqlite.org/src/info/689137afb6da41 | 689137afb6da41].

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  regsub -all "\n( *\n)+" $text "</p>\n\n<p>" txt
  regsub -all {[Tt]icket #(\d+)} $txt \
      {<a href="http://www.sqlite.org/cvstrac/tktview?tn=\1">\0</a>} txt
  hd_resolve "<blockquote>$txt</blockquote>"
  hd_puts "<hr width=\"50%\">"
}

newsitem {2013-Apr-03} {Release 3.7.16.1} {
  SQLite [version 3.7.16.1] is a bug fix release that fixes a few problems
  that were present in the previous releases.

  The primary motivation for version 3.7.16.1 is to fix a bug in the
  query optimizer that was introduced as part of [version 3.7.15].  The
  query optimizer was being a little overzealous in optimizing out some
  ORDER BY clauses, which resulted in sorting being omitted on occasions
................................................................................
  details.

  In addition to the ORDER BY fix, several other patches to fix obscure
  (and mostly harmless) bugs and to fix spelling errors in source code
  comments are also included in this release.
}

newsitem {2013-Mar-18} {Release 3.7.16} {
  SQLite [version 3.7.16] is a regularly scheduled release of SQLite.
  This release contains several langauge enhancements and improvements
  to the query optimizer.  A list of the major enhancements and optimizations
  can be see on the [version 3.7.16 | change log].

  There was one important bug fix
  (see [http://www.sqlite.org/src/info/fc7bd6358f | Ticket fc7bd6358f])
................................................................................
  a three-way join where the join constraints compared INTEGER columns
  to TEXT columns.  This issue had been in the code for time out of mind
  and had never before been reported, so we surmise that it is very obscure.
  Nevertheless, all users are advised to upgrade to avoid any future problems
  associated with this issue.
}

newsitem {2013-Jan-09} {Release 3.7.15.2} {
  SQLite [version 3.7.15.2] is a patch release that fixes a single bug
  that was introduced in version [version 3.7.15].  The fix is a 4-character
  edit to a single line of code.  Other than this 4-character change and
  the update of the version number, nothing has changed from
  [version 3.7.15.1].
}

newsitem {2012-Dec-19} {Release 3.7.15.1} {
  SQLite [version 3.7.15.1] is a patch release that fixes a single bug
  that was introduced in version [version 3.7.15].  The fix involved changing
  two lines of code and adding a single assert().  This release also includes
  some new test cases to prevent a regression of the bug, and the version
  number is increased, of course.  But otherwise, nothing has changed from
  [version 3.7.15].
}

newsitem {2012-Dec-12} {Release 3.7.15} {
  SQLite [version 3.7.15] is a regularly schedule release of SQLite.  This
  release contains several improvements to the query planner and optimizer
  and one important bug fix.  This is the first release to officially
  support Windows 8 Phone.

  The important bug fix is a problem that can lead to segfaults when using
  [shared cache mode] on a schema that contains a [COLLATE operator] within
................................................................................

  <li><p>Do a better job of recognizing when an ORDER BY clause can be 
  implemented using indices - especially in cases where the ORDER BY clause
  contains terms from two or more tables in a join.</p>
  </ol>
}

newsitem {2012-Oct-04} {Release 3.7.14.1} {
  SQLite [version 3.7.14.1] is a patch release.  Changes from the baseline
  version 3.7.14 are minimal and are restricted to fixing three bugs.

  One of the fixed bugs is a long-standing issue with the TCL interface.
  Another is an external compiler bug that SQLite merely works around and
  that only comes up if you are using the VisualStudio-2012 compiler to
  generate WinRT applications on ARM with optimizations enabled.  The
  third problem is an SQLite core bug, introduced in version 3.7.14, that
  can cause a segfault if a query contains a LEFT JOIN that contains an OR
  in the ON clause.
}


newsitem {2012-Sep-03} {Release 3.7.14} {
  SQLite [version 3.7.14] is a regularly scheduled maintenance release
  of SQLite.  The previous release continues to work well.  Upgrading
  is optional.

  Version 3.7.14 drops native support for OS/2.  We are not aware of any
  active projects that were using SQLite on OS/2 and since the SQLite
  developers had no way of testing on OS/2 it seemed like it was time
................................................................................

  This release also includes performance improvements to the sort algorithm
  that is used to implement ORDER BY and CREATE INDEX.  And the query planner
  has been enhanced to better use covering indices on queries that use OR
  terms in the WHERE clause.
}

newsitem {2012-June-11} {Release 3.7.13} {
  SQLite [version 3.7.13] adds support for WinRT and metro style
  applications for Microsoft Windows 8.  The 3.7.13 release is
  coming sooner than is usual after the previous release in order to get
  this new capability into the hands of developers.  To use SQLite in 
  a metro style application, compile with the -DSQLITE_OS_WINRT flag.
  Because of the increased application security and safety requirements
  of WinRT, all database
................................................................................
  Getting these performance optimizations into circulation quickly is
  yet another reason for making this release so soon following the previous.

  The next release of SQLite is scheduled to occur after the usual
  2 or 3 month interval.
}

newsitem {2012-May-22} {Patch Release 3.7.12.1} {
  SQLite [version 3.7.12.1] is a patch release for [version 3.7.12] that
  fixes a [http://www.sqlite.org/src/info/c2ad16f997ee9c | bug] that was
  introduced in version 3.7.12 and that can
  cause a segfault for certain obscure nested aggregate queries.
  There are very few changes in 3.7.12.1, and upgrading is only needed for
  applications that do nested aggregate queries.
}

newsitem {2012-May-14} {Version 3.7.12} {
  SQLite [version 3.7.12] is a regularly scheduled maintenance release.
  This release contains several new optimizations and bug fixes and upgrading
  is recommended.  See the [version 3.7.12 | change summary] for details.
}


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  regsub -all "\n( *\n)+" $text "</p>\n\n<p>" txt
  regsub -all {[Tt]icket #(\d+)} $txt \
      {<a href="http://www.sqlite.org/cvstrac/tktview?tn=\1">\0</a>} txt
  hd_resolve "<blockquote>$txt</blockquote>"
  hd_puts "<hr width=\"50%\">"
}

newsitem {2013-03-29} {Release 3.7.16.1} {
  SQLite [version 3.7.16.1] is a bug fix release that fixes a few problems
  that were present in the previous releases.

  The primary motivation for version 3.7.16.1 is to fix a bug in the
  query optimizer that was introduced as part of [version 3.7.15].  The
  query optimizer was being a little overzealous in optimizing out some
  ORDER BY clauses, which resulted in sorting being omitted on occasions
................................................................................
  details.

  In addition to the ORDER BY fix, several other patches to fix obscure
  (and mostly harmless) bugs and to fix spelling errors in source code
  comments are also included in this release.
}

newsitem {2013-03-18} {Release 3.7.16} {
  SQLite [version 3.7.16] is a regularly scheduled release of SQLite.
  This release contains several langauge enhancements and improvements
  to the query optimizer.  A list of the major enhancements and optimizations
  can be see on the [version 3.7.16 | change log].

  There was one important bug fix
  (see [http://www.sqlite.org/src/info/fc7bd6358f | Ticket fc7bd6358f])
................................................................................
  a three-way join where the join constraints compared INTEGER columns
  to TEXT columns.  This issue had been in the code for time out of mind
  and had never before been reported, so we surmise that it is very obscure.
  Nevertheless, all users are advised to upgrade to avoid any future problems
  associated with this issue.
}

newsitem {2013-01-09} {Release 3.7.15.2} {
  SQLite [version 3.7.15.2] is a patch release that fixes a single bug
  that was introduced in version [version 3.7.15].  The fix is a 4-character
  edit to a single line of code.  Other than this 4-character change and
  the update of the version number, nothing has changed from
  [version 3.7.15.1].
}

newsitem {2012-12-19} {Release 3.7.15.1} {
  SQLite [version 3.7.15.1] is a patch release that fixes a single bug
  that was introduced in version [version 3.7.15].  The fix involved changing
  two lines of code and adding a single assert().  This release also includes
  some new test cases to prevent a regression of the bug, and the version
  number is increased, of course.  But otherwise, nothing has changed from
  [version 3.7.15].
}

newsitem {2012-12-12} {Release 3.7.15} {
  SQLite [version 3.7.15] is a regularly schedule release of SQLite.  This
  release contains several improvements to the query planner and optimizer
  and one important bug fix.  This is the first release to officially
  support Windows 8 Phone.

  The important bug fix is a problem that can lead to segfaults when using
  [shared cache mode] on a schema that contains a [COLLATE operator] within
................................................................................

  <li><p>Do a better job of recognizing when an ORDER BY clause can be 
  implemented using indices - especially in cases where the ORDER BY clause
  contains terms from two or more tables in a join.</p>
  </ol>
}

newsitem {2012-10-04} {Release 3.7.14.1} {
  SQLite [version 3.7.14.1] is a patch release.  Changes from the baseline
  version 3.7.14 are minimal and are restricted to fixing three bugs.

  One of the fixed bugs is a long-standing issue with the TCL interface.
  Another is an external compiler bug that SQLite merely works around and
  that only comes up if you are using the VisualStudio-2012 compiler to
  generate WinRT applications on ARM with optimizations enabled.  The
  third problem is an SQLite core bug, introduced in version 3.7.14, that
  can cause a segfault if a query contains a LEFT JOIN that contains an OR
  in the ON clause.
}


newsitem {2012-09-03} {Release 3.7.14} {
  SQLite [version 3.7.14] is a regularly scheduled maintenance release
  of SQLite.  The previous release continues to work well.  Upgrading
  is optional.

  Version 3.7.14 drops native support for OS/2.  We are not aware of any
  active projects that were using SQLite on OS/2 and since the SQLite
  developers had no way of testing on OS/2 it seemed like it was time
................................................................................

  This release also includes performance improvements to the sort algorithm
  that is used to implement ORDER BY and CREATE INDEX.  And the query planner
  has been enhanced to better use covering indices on queries that use OR
  terms in the WHERE clause.
}

newsitem {2012-06-11} {Release 3.7.13} {
  SQLite [version 3.7.13] adds support for WinRT and metro style
  applications for Microsoft Windows 8.  The 3.7.13 release is
  coming sooner than is usual after the previous release in order to get
  this new capability into the hands of developers.  To use SQLite in 
  a metro style application, compile with the -DSQLITE_OS_WINRT flag.
  Because of the increased application security and safety requirements
  of WinRT, all database
................................................................................
  Getting these performance optimizations into circulation quickly is
  yet another reason for making this release so soon following the previous.

  The next release of SQLite is scheduled to occur after the usual
  2 or 3 month interval.
}

newsitem {2012-05-22} {Patch Release 3.7.12.1} {
  SQLite [version 3.7.12.1] is a patch release for [version 3.7.12] that
  fixes a [http://www.sqlite.org/src/info/c2ad16f997ee9c | bug] that was
  introduced in version 3.7.12 and that can
  cause a segfault for certain obscure nested aggregate queries.
  There are very few changes in 3.7.12.1, and upgrading is only needed for
  applications that do nested aggregate queries.
}

newsitem {2012-05-14} {Version 3.7.12} {
  SQLite [version 3.7.12] is a regularly scheduled maintenance release.
  This release contains several new optimizations and bug fixes and upgrading
  is recommended.  See the [version 3.7.12 | change summary] for details.
}


</tcl>

<a href="oldnews.html">Old news...</a>