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No support in default views:
<a class="moz-txt-link-freetext" href="http://lists.drupal.org/pipermail/support/2010-May/014890.html">http://lists.drupal.org/pipermail/support/2010-May/014890.html</a><br>
<br>
You could hack this together with views_php, of course, but you
might be better off writing a hook_views_query_alter(). The latter
approach could be implemented by converting a date filter with the
not equals operator into a NOT EXISTS subquery.<br>
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Ted<br>
<br>
<div class="moz-cite-prefix">On 2/21/2014 8:33 AM, Nancy Wichmann
wrote:<br>
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<blockquote
cite="mid:1392989631.67987.YahooMailNeo@web181203.mail.ne1.yahoo.com"
type="cite">
<div style="color:#000; background-color:#fff; font-family:arial,
helvetica, sans-serif;font-size:12pt">
<div><span>We have a content type called Tracker, which has an
entity reference to another content type called Costs.<br>
The Costs type has a field collection that includes an
entity reference to users.<br>
The Tracker has a "service date" field that may contain
multiple values.<br>
<br>
There is a view that shows all the users and includes a
column for the dates that person is assigned to work through
the associated Costs content.<br>
<br>
Now the user wants to add an exposed filter to that view
that will allow them to see which users are NOT assigned on
a given date.<br>
<br>
So far, I have not been able to figure out if this is even
possible, let alone how to do it.<br>
<br>
Does anybody have any ideas on how to do it?</span></div>
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<div> </div>
<div><font color="#ff007f" face="bookman old style, new york,
times, serif" size="4"><i><b>Nancy</b></i></font><br>
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