[buddypress-trac] [BuddyPress] #4045: Activity Feed queries fail with millions of rows

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#4045: Activity Feed queries fail with millions of rows
-----------------------------------+--------------------
 Reporter:  zacechola              |       Owner:
     Type:  defect (bug)           |      Status:  new
 Priority:  normal                 |   Milestone:  1.6
Component:  Activity               |     Version:  1.5.4
 Severity:  normal                 |  Resolution:
 Keywords:  2nd-opinion has-patch  |
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Comment (by shanebp):

 boone-


 {{{
 EXPLAIN SELECT a . * , u.user_email, u.user_nicename, u.user_login,
 u.display_name, pd.value AS user_fullname
 FROM wp_bp_activity a, wp_users u, wp_bp_xprofile_data pd
 WHERE u.ID = a.user_id
 AND pd.user_id = a.user_id
 AND pd.field_id =1
 AND a.type =  'activity_comment'
 AND a.item_id =577900
 AND a.mptt_left
 BETWEEN 1
 AND 4
 ORDER BY a.date_recorded ASC ;




 id      select_type     table   type    possible_keys   key     key_len
 ref     rows    Extra
 1       SIMPLE  a       ref     user_id,item_id,type,mptt_left  type
 227     const   32148   Using where; Using filesort
 1       SIMPLE  u       eq_ref  PRIMARY PRIMARY 8       PRIME.a.user_id 1
 Using where
 1       SIMPLE  pd      ref     field_id,user_id        user_id 8
 PRIME.a.user_id 12      Using where
 }}}

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Ticket URL: <https://buddypress.trac.wordpress.org/ticket/4045#comment:37>
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