From: | Richard Huxton <dev(at)archonet(dot)com> |
---|---|
To: | Bart Degryse <Bart(dot)Degryse(at)indicator(dot)be> |
Cc: | pgsql-sql(at)postgresql(dot)org |
Subject: | Re: Function description |
Date: | 2008-02-15 09:09:58 |
Message-ID: | 47B556E6.8090200@archonet.com |
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Lists: | pgsql-sql |
Bart Degryse wrote:
> Hi all,
> I find some 1553 functions in pg_catalog of which only a small part is documented in the manual.
> Does anyone know where I can find what the others do with maybe an example.
There's no other documentation (apart from the source) but most are
repetitions and conversions:
For example "\df int4" returns 8 identically named casts to cover
converting from numeric, real, smallint etc. There is a similar list for
int2 and most other types in the system.
Likewise "\df int*mod" will show a set of modulo-calculation functions
for various sizes of integer.
So - they're not explicitly documented as separate functions, but they
implement operators and public functions that are.
--
Richard Huxton
Archonet Ltd
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