[wp-trac] [WordPress Trac] #45354: Adding index for meta_key and post_id in postmeta

[WordPress Trac]

#45354: Adding index for meta_key and post_id in postmeta
--------------------------+-----------------------------
 Reporter:  DuckDagobert  |      Owner:  (none)
     Type:  enhancement   |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Database      |    Version:
 Severity:  normal        |   Keywords:
  Focuses:                |
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 We should add an index on post_id and meta_key as queries that contain
 these columns are incredibly common (even in loop in core on every page
 load basically).

 An index will improve query speed up to 100% even when only 1000 posts are
 in db.

 Test it yourself:


 {{{
 ALTER TABLE `wp_postmeta` ADD INDEX `wp_postmeta_key_id`
 (`meta_key`,`post_id`);
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/45354>
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