| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Kevin Murphy <murphy(at)genome(dot)chop(dot)edu> |
| Cc: | Peter Fein <pfein(at)pobox(dot)com>, PostgreSQL general <pgsql-general(at)postgresql(dot)org> |
| Subject: | Re: Note on scalar subquery syntax |
| Date: | 2005-08-03 19:24:16 |
| Message-ID: | 3303.1123097056@sss.pgh.pa.us |
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| Lists: | pgsql-general |
Kevin Murphy <murphy(at)genome(dot)chop(dot)edu> writes:
> I'm no expert, but per Peter's request, here is a generic
> array-unpacking function that works in PostgreSQL 8.0.
> [snip]
> I would imagine that a type-specific version would be faster.
No, actually it'd be exactly the same. What happens under the hood with
a plpgsql "anyarray" function is that Postgres instantiates a copy for
each specific datatype you call it with during the life of your session.
So there's no real point in doing the same thing manually.
regards, tom lane
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