Subject | Re: [firebird-support] Theory about join vs where |
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Author | Tetram Corp |
Post date | 2009-06-15T13:34:33Z |
Ok,
so for optimizer, a condition is the same wherever it comes from ?
Thank's
Thierry
Dimitry Sibiryakov a écrit :
so for optimizer, a condition is the same wherever it comes from ?
Thank's
Thierry
Dimitry Sibiryakov a écrit :
>> In this case, putting test about year or quantity in join will not
>> produce a different result
>> But what about efficiency ?
>>
>
> In this case - no differences. Optimizer will gather all conditions
> into one pile.
>
> SY, SD.
>
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