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Displaying posts with tag: handler_read_first (reset)

Handler_read_first MySQL Haiku
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I was writing up some notes about a client’s status variables, and I’d had to remind myself of Handler_read_first. Handler_read_first is a counter that increments when the first entry in the index is read, which may indicate that a full index scan is being used. With this particular client, I ran a SHOW [...]

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