[wp-trac] Re: [WordPress Trac] #7540: allow multiple values for key in usermeta

[WordPress Trac]

#7540: allow multiple values for key in usermeta
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 Reporter:  wnorris                               |        Type:  enhancement
   Status:  new                                   |    Priority:  normal     
Milestone:  2.8                                   |   Component:  Users      
  Version:  2.6.1                                 |    Severity:  normal     
 Keywords:  needs-patch 2nd-opinion dev-feedback  |  
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Comment(by misterbisson):

 I agree: any site that would actually put this to significant use would
 have to add an index to that column, and anybody who would join against
 anything other than the user_id is begging for performance problems.

 Still, Considering the small number of users that most sites have, the
 potential negative effects are quite limited. And sites that do host a
 large number of users have a variety of performance issues to be aware of
 (and, hopefully, are in a position to manage them).

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Ticket URL: <http://core.trac.wordpress.org/ticket/7540#comment:26>
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