[wp-trac] Re: [WordPress Trac] #4895: Tag unions and intersections

[WordPress Trac]

#4895: Tag unions and intersections
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 Reporter:  ryan            |        Owner:  anonymous
     Type:  defect          |       Status:  reopened 
 Priority:  normal          |    Milestone:  2.3      
Component:  General         |      Version:  2.3      
 Severity:  normal          |   Resolution:           
 Keywords:  taxonomy, tags  |  
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Comment (by ryan):

 Patch parses "tag" queries that can plus and comma.  Intersections are
 parsed into tag_slug!__and and unions are parsed into tag_slug!__in. The
 joins are rather hairy.  Don't know if it would be best to get the IDs for
 the slugs in a separate query to spare the extra join.

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Ticket URL: <http://trac.wordpress.org/ticket/4895#comment:7>
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