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<title>SQLite Release 3.39.0 On 2022-06-25</title>
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<h2>SQLite Release 3.39.0 On 2022-06-25</h2><p><ol class='lessindent'>
<li> Add (long overdue) support for <a href="../lang_select.html#rjoin">RIGHT and FULL OUTER JOIN</a>.
<li> Add new binary comparison operators <a href="../lang_expr.html#isdf">IS NOT DISTINCT FROM</a> and <a href="../lang_expr.html#isdf">IS DISTINCT FROM</a>
that are equivalent to IS and IS NOT, respective, for compatibility with
PostgreSQL and SQL standards.
<li> Add a new return code (value "3") from the <a href="../c3ref/vtab_distinct.html">sqlite3_vtab_distinct()</a>
interface that indicates a query that has both DISTINCT and ORDER BY
clauses.
<li> Added the <a href="../c3ref/db_name.html">sqlite3_db_name()</a> interface.
<li> The unix os interface resolves all symbolic links in database
filenames to create a canonical name for the database before the
file is opened.
If the <a href="../c3ref/c_open_autoproxy.html">SQLITE_OPEN_NOFOLLOW</a> flag is used with <a href="../c3ref/open.html">sqlite3_open_v2()</a>
or similar, the open will fail if any element of the path is a
symbolic link.
<li> Defer materializing views until the materialization
is actually needed, thus avoiding unnecessary work if the materialization turns
out to never be used.
<li> The <a href="../lang_select.html#resultset">HAVING clause</a> of a <a href="../lang_select.html">SELECT statement</a> is now allowed on any aggregate query,
even queries that do not have a <a href="../lang_select.html#resultset">GROUP BY clause</a>.
<li> Many <a href="../cpu.html#microopt">microoptimizations</a> collectively reduce CPU cycles by about 2.3%.
<p><b>Hashes:</b>
<li>SQLITE_SOURCE_ID: 2022-06-25 14:57:57 14e166f40dbfa6e055543f8301525f2ca2e96a02a57269818b9e69e162e98918
<li>SHA3-256 for sqlite3.c: d9c439cacad5e4992d0d25989cfd27a4c4f59a3183c97873bc03f0ad1aa78b7a
</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="https://www.sqlite.org/src/timeline">
SQLite version control site</a>.</p>
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