Forum OpenACS Development: Re: acs_object__new slowness...

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23: Re: acs_object__new slowness... (response to 1)
Posted by Don Baccus on 11/17/03 10:44 PM
Yes, actually, Jeff and I switched a lot of UNION to UNION ALL  clauses for 4.6.? for this very reason, when it was clear that there was no possibility of duplicate rows.

Thanks for the Oracle reference - Oracle's ability to optimize in the face of UNION is rather limited, indeed.