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<h2>SQLite Release 3.14.2 On 2016-09-12</h2><p><b>Changes in version 3.14 (2016-08-08):</b></p>
<p><ol class='lessindent'>
<div style="width:280px;float:right;padding:10px;margin:0px 10px;">
<img src='../images/sqlitepie.jpg' width=280 height=250></img><br>
<center>Celebrating the SQLite "<big>π</big> release"
with a home-baked pie.</center>
</div>
<li value='1'>Added support for <a href="../vtab.html#worid">WITHOUT ROWID virtual tables</a>.
<li>Improved the query planner so that the <a href="../optoverview.html#or_opt">OR optimization</a> can
be used on <a href="../vtab.html">virtual tables</a> even if one or more of the disjuncts
use the <a href="../lang_expr.html#like">LIKE</a>, <a href="../lang_expr.html#glob">GLOB</a>, <a href="../lang_expr.html#regexp">REGEXP</a>, <a href="../lang_expr.html#match">MATCH</a> operators.
<li>Added the <a href="../csv.html">CSV virtual table</a> for reading
<a href="https://www.ietf.org/rfc/rfc4180.txt">RFC 4180</a> formatted comma-separated
value files.
<li>Added the <a href="../carray.html">carray() table-valued function</a> extension.
<li>Enabled <a href="../loadext.html#persist">persistent loadable extensions</a> using the new
<a href="../rescode.html#ok_load_permanently">SQLITE_OK_LOAD_PERMANENTLY</a> return code from the extension
entry point.
<li>Added the <a href="../c3ref/c_dbstatus_options.html#sqlitedbstatuscacheusedshared">SQLITE_DBSTATUS_CACHE_USED_SHARED</a> option to <a href="../c3ref/db_status.html">sqlite3_db_status()</a>.
<li>Add the
<a href="https://www.sqlite.org/src/artifact?ci=trunk&filename=ext/misc/vfsstat.c">vfsstat.c</a>
loadable extension - a VFS shim that measures I/O
together with an <a href="../vtab.html#epovtab">eponymous virtual table</a> that provides access to the measurements.
<li>Improved algorithm for running queries with both an ORDER BY and a LIMIT where
only the inner-most loop naturally generates rows in the correct order.
<li>Enhancements to <a href="../lemon.html">Lemon parser generator</a>, so that it generates a
faster parser.
<li>The <a href="../pragma.html#pragma_compile_options">PRAGMA compile_options</a> command now attempts to show the version number
of the compiler that generated the library.
<li>Enhance <a href="../pragma.html#pragma_table_info">PRAGMA table_info</a> so that it provides information about
<a href="../vtab.html#epovtab">eponymous virtual tables</a>.
<li>Added the "win32-none" VFS, analogous to the "unix-none" VFS, that works like
the default "win32" VFS except that it ignores all file locks.
<li>The query planner uses a full scan of a <a href="../partialindex.html">partial index</a> instead of a
full scan of the main table, in cases where that makes sense.
<li>Allow <a href="../vtab.html#tabfunc2">table-valued functions</a> to appear on the right-hand side of an <a href="../lang_expr.html#in_op">IN operator</a>.
<li>Created the <a href="../dbhash.html">dbhash.exe</a> command-line utility.
<li>Added two new C-language interfaces: <a href="../c3ref/expanded_sql.html">sqlite3_expanded_sql()</a> and
<a href="../c3ref/trace_v2.html">sqlite3_trace_v2()</a>. These new interfaces subsume the functions of
<a href="../c3ref/profile.html">sqlite3_trace()</a> and <a href="../c3ref/profile.html">sqlite3_profile()</a> which are now deprecated.
<li>Added the <a href="../json1.html#jquote">json_quote()</a> SQL function to <a href="../json1.html">the json1 extension</a>.
<li>Disable the <a href="../c3ref/set_authorizer.html">authorizer callback</a> while reparsing the schema.
<li>Added the <a href="../compile.html#enable_unknown_sql_function">SQLITE_ENABLE_UNKNOWN_SQL_FUNCTION</a> compile-time option and turned that
option on by default when building the <a href="../cli.html">command-line shell</a>.
<p><b>Bug Fixes:</b>
<li>Fix the <a href="../lang_altertable.html">ALTER TABLE</a> command so that it does not corrupt <a href="../lang_createindex.html#descidx">descending indexes</a>
when adding a column to a <a href="../pragma.html#pragma_legacy_file_format">legacy file format</a> database. Ticket
<a href="https://www.sqlite.org/src/info/f68bf68513a1c15f">f68bf68513a1c15f</a>
<li>Fix a NULL-pointer dereference/crash that could occurs when a transitive WHERE
clause references a non-existent collating sequence. Ticket
<a href="https://www.sqlite.org/src/info/e8d439c77685eca6">e8d439c77685eca6</a>.
<li>Improved the cost estimation for an index scan which includes a WHERE clause
that can be partially or fully evaluated using columns in the index and without
having to do a table lookup. This fixes a performance regression that occurred
for some obscure queries following the ORDER BY LIMIT optimization introduced
in <a href="../releaselog/3_12_0.html">version 3.12.0</a>.
</ol>
<p><b>Additional changes in version 3.14.1 (2016-08-11):</b></p>
<p><ol class='lessindent'>
<li value='23'>A performance enhancement to the page-cache "truncate" operation
reduces <a href="../lang_transaction.html">COMMIT</a> time by dozens of milliseconds on systems with a
large <a href="../pragma.html#pragma_cache_size">page cache</a>.
<li>Fix to the --rbu option of <a href="../sqldiff.html">sqldiff</a>.
</ol>
<p><b>Additional changes in version 3.14.2 (2016-09-12):</b></p>
<p><ol class='lessindent'>
<li value='25'> Improved support for using the STDCALL calling convention in winsqlite3.dll.
<li> Fix the <a href="../c3ref/trace_v2.html">sqlite3_trace_v2()</a> interface so that it is disabled if either the
callback or the mask arguments are zero, in accordance with the documentation.
<li> Fix commenting errors and improve the comments generated on <a href="../lang_explain.html">EXPLAIN</a> listings
when the <a href="../compile.html#enable_explain_comments">-DSQLITE_ENABLE_EXPLAIN_COMMENTS</a> compile-time option is used.
<li> Fix the ".read" command in the <a href="../cli.html">command-line shell</a> so that it understands
that its input is not interactive.
<li> Correct affinity computations for a SELECT on the RHS of an IN operator.
Fix for ticket <a href="https://sqlite.org/src/info/199df4168c">199df4168c</a>.
<li> The ORDER BY LIMIT optimization is not valid unless the inner-most IN operator
loop is actually used by the query plan. Fix for
ticket <a href="https://sqlite.org/src/info/0c4df46116e90f92">0c4df46116e90f92</a>.
<li> Fix an internal code generator problem that was causing some <a href="../lang_delete.html">DELETE</a> operations
to no-op. Ticket <a href="https://sqlite.org/src/info/ef360601">ef360601</a>
<p><b>Hashes:</b>
<li>SQLITE_SOURCE_ID: "2016-09-12 18:50:49 29dbef4b8585f753861a36d6dd102ca634197bd6"
<li>SHA1 for sqlite3.c: bcc4a1989db45e7f223191f2d0f66c1c28946383
</ol></p>
<p>A <a href="../changes.html">complete list of SQLite releases</a>
in a single page and a <a href="../chronology.html">chronology</a> are both also available.
A detailed history of every
check-in is available at
<a href="http://www.sqlite.org/src/timeline">
SQLite version control site</a>.</p>
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