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 […]
Handler_read_first MySQL Haiku
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 […]