php - Why is this MySQL select query slowing things down? -


i have query:

"select * forum_posts post_deleted='0'"

i can see via new relic it's eating 60% of mysql resources, , therefore slowing down entire website.

i have no idea why such simple query slow down? table innodb table, index on "id".

  • create index on post_deleted
  • verify post_deleted of type boolean (tinyint, smallint, or integer outperform string)
  • don't compare against string '0' against number 0.

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