Re: Arrays vs separate system catalogs

Hello.

It's more common problem, I think. Working with array in postgres is
very difficult and uncomfortable. For any array type it needs methods
like a push, pop, length, splice etc. This methods may be implemented
for any array type. BTW, aggregates MAX and MIN works only for built-in
types, but such aggregates may be defined for any type which supports
compare function.

Peter Eisentraut wrote:
> During my coding of the per-user/database settings, it occurred to me one
> more time that arrays are evil. Basically, the initial idea was to have a
> column pg_database.datconfig that contains, say,
> '{"geqo_threshold=55","enable_seqscan=off"}'. Just inserting and deleting
> in arrays is terrible, let alone querying them in a reasonable manner.
> We're getting killed by this every day in the privileges and groups case.
>
> What are people's thoughts on where (variable-length) arrays are OK in
> system catalogs, and where a new system catalog should be created?
>
>

--
Teodor Sigaev
teodor(at)stack(dot)net