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Displaying posts with tag: Øystein Grøvlen (reset)
Apr
30
2015
Optimizer hints in MySQL 5.7.7 – The missed manual
Posted by Sveta Smirnova of MySQL Performance Blog on Thu 30 Apr 2015 07:00 UTC
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In version MySQL 5.7.7 Oracle presented a new promising feature: optimizer hints. However it did not publish any documentation about the hints. The only note which I found in the user manual about the hints is:

  • It is now possible to provide hints to the optimizer by including /*+ ... */ comments following the SELECT, INSERT, REPLACE, …
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