[wp-trac] [WordPress Trac] #18158: Meta Query for posts with a meta key not set (IS NULL).

[WordPress Trac]

#18158: Meta Query for posts with a meta key not set (IS NULL).
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 Reporter:  johnnyb                  |       Owner:  georgestephanis
     Type:  enhancement              |      Status:  accepted
 Priority:  normal                   |   Milestone:  3.4
Component:  Query                    |     Version:  3.2.1
 Severity:  normal                   |  Resolution:
 Keywords:  needs-testing has-patch  |
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Comment (by nacin):

 NOT EXISTS probably fits better here, and does have a tie-in for SQL
 terminology that is probably more relevant:
 http://dev.mysql.com/doc/refman/5.0/en/exists-and-not-exists-
 subqueries.html.

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Ticket URL: <http://core.trac.wordpress.org/ticket/18158#comment:29>
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