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<DIV><FONT face=Arial size=2></FONT><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Daniel,</FONT></DIV>
<DIV><FONT face=Arial size=2>The way below should work, but you may, depending
on the overall structure have to do pre-queries to build the 'not in'
lists.</FONT></DIV>
<DIV><FONT face=Arial size=2>I'm hoping whoever designed it actually put the
different bits into different tables! :-)</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Phil</FONT></DIV>
<BLOCKQUOTE
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<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">Try<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">Select
* from companies where company_id not in (select distinct company_id from
todos) and company_id not in (select distinct...) etc.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">Haven’t
tried it, but it should work.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">YMMV
etc.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">A.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">Andy
Cowan<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">OpenSense
Ltd<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
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style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
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<P class=MsoNormal><B><SPAN lang=EN-US
style="FONT-SIZE: 10pt; COLOR: windowtext; FONT-FAMILY: 'Tahoma','sans-serif'">From:</SPAN></B><SPAN
lang=EN-US
style="FONT-SIZE: 10pt; COLOR: windowtext; FONT-FAMILY: 'Tahoma','sans-serif'">
<A
href="mailto:phpwm-bounces@mailman.lug.org.uk">phpwm-bounces@mailman.lug.org.uk</A>
[mailto:phpwm-bounces@mailman.lug.org.uk] <B>On Behalf Of </B>Daniel
Davies<BR><B>Sent:</B> 03 April 2008 15:58<BR><B>To:</B> West Midlands PHP
User Group<BR><B>Subject:</B> [Phpwm] SQL
Problem<o:p></o:p></SPAN></P></DIV></DIV>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal style="MARGIN-BOTTOM: 12pt">Hello all,<BR><BR>Sorry, this
is not strictly PHP, but its all the same kettle of fish.<BR><BR>I'm working
on a system that has companies, and these companies can have activities and
todos, defined something like:<BR><BR>companies { <U>company_id</U>, name,
etc... }<BR>todos { <U>todo_id</U>, <I>company_id</I>, etc... }<BR>activities
{ <U>activity_id</U>, <I>company_id</I>, etc... }<BR><BR>I'm trying to write a
query which will only return companies that do NOT have an activity or a todo
in one query - my mind is blank! Maybe my brain has been rotted by this
system, but I can't think of a nice simple way to do it. Any ideas? I've had
some thoughts about using count, but I'd like to check I'm not missing a
simple solution before I start writing elaborate
queries.<BR><BR>Regards,<BR><BR>Daniel<o:p></o:p></P></DIV><BR>
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