[wp-trac] [WordPress Trac] #10905: Do not allow duplicate (post_id, meta_key, meta_value) rows in meta tables

[WordPress Trac]

#10905: Do not allow duplicate (post_id, meta_key, meta_value) rows in meta tables
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 Reporter:  scribu        |       Owner:  ryan     
     Type:  defect (bug)  |      Status:  new      
 Priority:  normal        |   Milestone:  3.0      
Component:  Database      |     Version:  2.9      
 Severity:  normal        |    Keywords:  has-patch
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Comment(by scribu):

 Related: #11683

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Ticket URL: <http://core.trac.wordpress.org/ticket/10905#comment:16>
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