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

[WordPress Trac]

#18158: Meta Query for posts with a meta key not set.
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 Reporter:  johnnyb      |       Owner:
     Type:  enhancement  |      Status:  new
 Priority:  normal       |   Milestone:  Future Release
Component:  Query        |     Version:  3.2.1
 Severity:  normal       |  Resolution:
 Keywords:  needs-patch  |
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Comment (by scribu):

 Each inner meta query is one join. So for the NOT EXISTS case, it could
 be:

 {{{
 ... INNER JOIN wp_postmeta as m1
 ... AND m1.meta_key != $meta_key
 }}}

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Ticket URL: <http://core.trac.wordpress.org/ticket/18158#comment:4>
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