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I've written cron jobs to update mysql statistics to prevent it from choosing bad query plans. It's as terrible as it sounds.

• pas 8y ago
  How come it's not automatic and built-in? Why is a script terrible? (Does it have to enumerate all tables and piecewise run the stat update?)
  • ovi256 8y ago
    Yes, the stats update is per table. We only updated it for a few tables we really cared about.