| From: | Ioannis Anagnostopoulos <ioannis(at)anatec(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | pgsql-novice(at)postgresql(dot)org |
| Subject: | Re: Aggregate from CASE WHEN... |
| Date: | 2012-07-08 22:56:07 |
| Message-ID: | 4FFA1007.9090409@anatec.com |
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| Lists: | pgsql-novice |
On 08/07/2012 23:54, Tom Lane wrote:
> Ioannis Anagnostopoulos <ioannis(at)anatec(dot)com> writes:
>> Now, for the final step of it. You said that SFUNC =
>> array_append form the example array_accum must be delclared "strict".
>> May I ask how as I am lost?
> You would need to create a new SQL function declaration, referencing the
> same underlying C code but marked strict. Then make a new aggregate
> referencing that as the sfunc instead of the original.
>
> regards, tom lane
Thank you, I was actually on my way to do exactly this...
Regards
Yiannis
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