Re: pass in array to function for use by where clause? how optimize?

From: Rob Sargent <robjsargent(at)gmail(dot)com>
To: pgsql-sql(at)postgresql(dot)org
Subject: Re: pass in array to function for use by where clause? how optimize?
Date: 2011-04-13 15:48:27
Message-ID: 4DA5C5CB.3030907@gmail.com
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On 04/13/2011 09:09 AM, Tom Lane wrote:
> Anish Kejariwal<anishkej(at)gmail(dot)com> writes:
>> (select store_id, avg(sales) sales
>> from store
>> where group_id in(select $1[i] from generate_subscripts($1, 1) g(i))
>
> Seems like a pretty brute-force way to deal with the array. Try
>
> where group_id = any($1)
>
> Not sure if it'll be a great deal faster, but it's at least easier to
> write.
>
> regards, tom lane
>
Would adding a subservient function which actually uses the value of the
iteration (group_id) as a single parameter be of any use?

rjs

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