Re: Very slow query when too many joins
Posted by:
As Os
Date: June 06, 2016 02:23AM
My db engine is InnoDB, the default in mysql, I haven't changed it.
So, in table 'fields_values' I should replace the primary key (the 'id') with a composite key which will be created from the addition of ads_id and field_id?
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Re: Very slow query when too many joins
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