Re: slow query sorting result - sending data
Table structure shows no sign of having been normalised; it looks more suitable for a nosql database, or perhaps a spreadsheet.
Queries with many OR clauses optimise poorly, esp. in MySQL 5.0.
The profiler isn't very useful for optimising queries.
5.0 is obsolete; if you really need relational logic, upgrade to 5.6, which offers much better query optimisation, and examine what stands in the way of normalising the table.
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April 28, 2015 07:27PM
Re: slow query sorting result - sending data
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April 28, 2015 10:38PM
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