Re: LIKE query problem

Thanks Tom,

Is that documented somewhere? I can't seem to see any mention of it in
the docs.

Tom Lane wrote:
> Marc McIntyre <mmcintyre@squiz.net> writes:
>
>> ... Is there a way to perform this efficiently in one query ?
>>
>
> No, because you're hoping for an indexscan optimization of a LIKE
> query, and that can only happen if the pattern is a plan-time constant.
>
>             regards, tom lane
>
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