Re: Make optimized LEFT JOIN with GROUP BY
I tried adding recepti.ID to the multi index, but doesn't help.
But as sson as I use GROUP BY recepti.datum instead of recepti.ID it uses where and the query is 100x faster... I don't understand the logic but... I can also use group by recepti.datum, but if 2 recipes would have same datetime one will not show in the list so I prefer the ID.
Is there any way to say mysql I want only one data from table pictures? Then I wouldn't need to use group by...
It seems such a basic problem for me...
Edited 2 time(s). Last edit at 05/03/2006 10:30AM by Jerry Potokar.
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