I was the unlucky guy that implemented CREATE GROUP and friends for 7.0,
so I can feel your array pains. While I don't know an answer to your
problem, I think this was a place where an array was not appropriate. I
don't know why this was done that way, I hope to change it some day.
On 2000-01-20, Kovacs Zoltan Sandor mentioned:
> (I sent this mail to a few list members already. Sorry, if you are one of
> them, too.)
>
> I didn't read pgsql-sql for some days, so I don't know whether this
> problem is reported already or not.
>
> I am trying to write a function for making group and user creation
> easier. I would like to insert a new value after the existing ones in the
> field "grolist" in the table "pg_group".
>
> I tried a few solutions without success:
>
> a) Defining a variable in a plpgsql function with type _int4. But
> the command SELECT INTO refused to take the array up. Or, if I can do
> this, how can I append a row after the others?
>
> b) The other idea was to get the values step by step from the array,
> making a varchar type variable with the values and the other neccessary
> punctuation ("{", "'", ",", "}"), and then perform an update on the right
> row of pg_group. But I realized that there is no varchar->_int4 converter
> in Postgres yet, unfortunately.
>
> The strange thing is that I can do almost everything by typing the queries
> across the psql frontend, but from functions nothing (I think it is due to
> there is no varchar->_int4 conversion) .
>
>
> What should I do?
>
> Thanks in advice,
> Kovacs, Zoltan
>
>
> ************
>
>
--
Peter Eisentraut Sernanders väg 10:115
peter_e@gmx.net 75262 Uppsala
http://yi.org/peter-e/ Sweden
