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Re: MySQL not using index when order by a datetime col?
Posted by: KimSeong Loh
Date: June 12, 2006 08:56AM

If there is no WHERE, MySQL tends to scan the whole table and then do a sort on the data, assuming a sequential read is faster than a random access read.
Just make sure that the sort_buffer is large enough to do the sorting in memory.

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MySQL not using index when order by a datetime col?
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Jens Karlsson
June 10, 2006 02:04AM
Re: MySQL not using index when order by a datetime col?
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KimSeong Loh
June 12, 2006 08:56AM
Re: MySQL not using index when order by a datetime col?
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Jens Karlsson
June 13, 2006 01:11PM
Re: MySQL not using index when order by a datetime col?
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KimSeong Loh
June 13, 2006 01:26PM
Re: MySQL not using index when order by a datetime col?
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Jens Karlsson
June 15, 2006 03:11AM
Re: MySQL not using index when order by a datetime col?
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KimSeong Loh
June 15, 2006 06:41AM


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