Re: Select clause in JOIN statement

<div>På fredag 14. juni 2013 kl. 01:10:51, skrev Luca Vernini &lt;<a href="mailto:lucazeo(at)gmail(dot)com" target="_blank">lucazeo(at)gmail(dot)com</a>&gt;:</div>

<blockquote style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div style="display:inline; font-family: monospace; font-size: 12px;">It works.<br>
Also consider views.<br>
<br>
Just used this on a my db:<br>
<br>
SELECT * FROM tblcus_customer<br>
INNER JOIN<br>
( SELECT * FROM tblcus_customer_status WHERE status_id &gt; 0) AS b<br>
ON tblcus_customer.status = b.status_id</div>
</blockquote>

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<div>This query is the same as a normal JOIN:</div>

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<pre class="western" style="background: #ffffff; border: none; padding: 0in">
<font color="#000080"><font face="DejaVu Sans Mono"><b>SELECT</b> </font></font><font color="#000000"><font face="DejaVu Sans Mono">*</font></font>
<font face="DejaVu Sans Mono"><font color="#000080"><b>FROM </b></font><font color="#000000">tblcus_customer</font></font>
<font color="#000000"> </font><font color="#000080"><font face="DejaVu Sans Mono"><b>INNER JOIN</b></font></font>
<font color="#000080"> </font><font color="#000000"><font face="DejaVu Sans Mono">tblcus_customer_status b</font></font>
<font color="#000000"> </font><font color="#000080"><font face="DejaVu Sans Mono"><b>ON </b></font></font><font color="#000000"><font face="DejaVu Sans Mono">tblcus_customer.status = b.status_id </font></font><font color="#000080"><font face="DejaVu Sans Mono"><b>AND </b></font></font><font color="#000000"><font face="DejaVu Sans Mono">b.status_id &gt; </font></font><font color="#0000ff"><font face="DejaVu Sans Mono">0</font></font>
</pre>
or</div>

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<pre class="western" style="background: #ffffff; border: none; padding: 0in">
<font color="#000080"><font face="DejaVu Sans Mono"><b>SELECT</b></font> </font><font color="#000000"><font face="DejaVu Sans Mono">*</font></font>
<font face="DejaVu Sans Mono"><font color="#000080"><b>FROM </b></font><font color="#000000">tblcus_customer</font></font>
<font color="#000000"> </font><font color="#000080"><font face="DejaVu Sans Mono"><b>INNER JOIN</b></font></font>
<font color="#000080"> </font><font color="#000000"><font face="DejaVu Sans Mono">tblcus_customer_status b</font></font>
<font color="#000000"> </font><font color="#000080"><font face="DejaVu Sans Mono"><b>ON </b></font></font><font color="#000000"><font face="DejaVu Sans Mono">tblcus_customer.status = b.status_id</font></font>
<font face="DejaVu Sans Mono"><font color="#000080"><b>WHERE </b></font><font color="#000000">b.status_id &gt; </font><font color="#0000ff">0</font></font></pre>
But you can JOIN on SELECTs selecting arbitrary stuff.</div>

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<div class="origo-email-signature">--<br>
Andreas Joseph Krogh &lt;andreak(at)officenet(dot)no&gt;      mob: +47 909 56 963<br>
Senior Software Developer / CTO - OfficeNet AS - http://www.officenet.no<br>
Public key: http://home.officenet.no/~andreak/public_key.asc</div>

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