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<h1>22. Virtuoso Functions Guide - stringdate</h1>
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datestring,
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<h2>stringdate</h2>
<div class="refpurpose"> Convert a string to a datetime</div>
<div class="funcsynopsis">
<span class="funcdef">
<span class="function">stringdate</span>
</span>
(<span class="paramdef">in <span class="parameter">str</span> varchar</span>);
</div>
<div class="refsect1">
<div class="refsect1title">Description</div>
<p>stringdate converts dates and timestamps from text to the internal
<span class="computeroutput">DATETIME</span> type.</p>
<p>The external format is: YYYY.MM.DD hh:mm.ss uuuuuu
where uuuuuu represents number of microseconds.</p>
<p>If trailing parts are omitted from the string given to stringdate,
they are assumed to be zero. The three first parts are mandatory.
Note that use of <span class="computeroutput">cast (x as datetime)</span> is preferred
over this function.</p>
</div>
<div class="refsect1">
<div class="refsect1title">Parameters</div>
<div class="refsect2">
<span class="refsect2title">str – </span>
A <span class="computeroutput">varchar</span> date in human-readable (external)
format.
</div>
</div>
<div class="refsect1title">Errors</div>
<table class="data">
<tr>
<td class="data">SQLState</td>
<td class="data">Error Code</td>
<td class="data">Error Text</td>
<td class="data">Description</td>
</tr>
<tr>
<td class="data">
<a name="err22007" />
<span class="errorcode">22007</span>
</td>
<td class="data">
<a name="errDT006" />
<span class="errorcode">DT006</span>
</td>
<td class="data">
<span class="errorname">Cannot convert <offending string> to datetime</span>
</td>
<td class="data" />
</tr>
<tr>
<td class="data">
<a name="err22002" />
<span class="errorcode">22002</span>
</td>
<td class="data">
<a name="errDT007" />
<span class="errorcode">DT007</span>
</td>
<td class="data">
<span class="errorname">Nulls not allowed as parameters to stringdate</span>
</td>
<td class="data" />
</tr>
</table>
<br />
<p />
<div class="refsect1">
<div class="refsect1title">Examples</div>
<a name="ex_stringdate_1" />
<div class="example">
<div class="exampletitle">Stringdate example with datestring_GMT</div>
<p>We are at central european time zone CET(GMT+1).</p>
<div>
<pre class="screen">SQL> use Demo;
Done. -- 3 msec.
SQL> select (datestring_GMT (stringdate ('2000-01-01 22:00')));
callret
VARCHAR
_______________________________________________________________________________
2000-01-01 21:00:00.000000
1 Rows. -- 45 msec.
SQL> select left (datestring(ShippedDate), 10) from Orders
where ShippedDate > stringdate ('1996.6.3');
callret
VARCHAR
_______________________________________________________________________________
1996-06-04
1996-06-04
1996-06-05
1996-06-05
1996-06-05
5 Rows. -- 3 msec.
</pre>
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<div class="refsect1">
<div class="refsect1title">See Also</div>
<p>
<a href="fn_datestring.html">datestring</a>
</p>
<p> The discussion of
<a href="coredbengine.html#DTTIMESTAMP">
<span class="computeroutput">TIMESTAMP</span>
</a>
datatype in section <a href="coredbengine.html">Database Concepts</a>
of the documentation.</p>
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