Thread: Dynamic plpgsql help
Hi I have the following plpgsql function that works: DROP TYPE if exists distr CASCADE; CREATE TYPE distr AS (b bigint, var varchar); DROP FUNCTION IF EXISTS dist() cascade; CREATE or replace FUNCTION dist() RETURNS setof distr AS $$ begin return query EXECUTE 'Select count(*) as b, cast(mostype as varchar) as var from segmentation group by mostype'; end $$ LANGUAGE 'plpgsql' VOLATILE; ; select * from dist(); When I try to make it dynamic, I get the error: ERROR: column "mostype" does not exist DROP TYPE if exists distr CASCADE; CREATE TYPE distr AS (b bigint, var varchar); DROP FUNCTION IF EXISTS dist(text) cascade; CREATE or replace FUNCTION dist(text) RETURNS setof distr AS $$ begin return query execute 'Select count(*) as b, cast( ' || quote_ident($1) || ' as varchar) as var from segmentation group by ' || quote_ident($1); end $$ LANGUAGE 'plpgsql' VOLATILE; ; select dist(mostype); Your help is appreciated Scott
2010/4/4 Scott Geller <sgellergsu@gmail.com>: > Hi > > I have the following plpgsql function that works: > > DROP TYPE if exists distr CASCADE; > CREATE TYPE distr AS (b bigint, var varchar); > > DROP FUNCTION IF EXISTS dist() cascade; > > CREATE or replace FUNCTION dist() RETURNS setof distr > AS $$ begin > return query EXECUTE 'Select count(*) as b, cast(mostype as varchar) > as var from segmentation group by mostype'; > end $$ LANGUAGE 'plpgsql' VOLATILE; > ; > > select * from dist(); > > When I try to make it dynamic, I get the error: > > ERROR: column "mostype" does not exist > > DROP TYPE if exists distr CASCADE; > CREATE TYPE distr AS (b bigint, var varchar); > > DROP FUNCTION IF EXISTS dist(text) cascade; > > CREATE or replace FUNCTION dist(text) RETURNS setof distr > AS $$ begin > return query execute 'Select count(*) as b, cast( ' || > quote_ident($1) || ' as varchar) as var from segmentation group by ' > || quote_ident($1); > end $$ LANGUAGE 'plpgsql' VOLATILE; > ; > > select dist(mostype); maybe select dist('mostype') regards Pavel Stehule > > Your help is appreciated > > Scott > > -- > Sent via pgsql-general mailing list (pgsql-general@postgresql.org) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-general >
Hi,
instead of cast(mostype as varchar) try mostype::varchar
Thanks
Sreelatha
On Sun, Apr 4, 2010 at 10:04 PM, Pavel Stehule <pavel.stehule@gmail.com> wrote:
2010/4/4 Scott Geller <sgellergsu@gmail.com>:> Himaybe select dist('mostype')
>
> I have the following plpgsql function that works:
>
> DROP TYPE if exists distr CASCADE;
> CREATE TYPE distr AS (b bigint, var varchar);
>
> DROP FUNCTION IF EXISTS dist() cascade;
>
> CREATE or replace FUNCTION dist() RETURNS setof distr
> AS $$ begin
> return query EXECUTE 'Select count(*) as b, cast(mostype as varchar)
> as var from segmentation group by mostype';
> end $$ LANGUAGE 'plpgsql' VOLATILE;
> ;
>
> select * from dist();
>
> When I try to make it dynamic, I get the error:
>
> ERROR: column "mostype" does not exist
>
> DROP TYPE if exists distr CASCADE;
> CREATE TYPE distr AS (b bigint, var varchar);
>
> DROP FUNCTION IF EXISTS dist(text) cascade;
>
> CREATE or replace FUNCTION dist(text) RETURNS setof distr
> AS $$ begin
> return query execute 'Select count(*) as b, cast( ' ||
> quote_ident($1) || ' as varchar) as var from segmentation group by '
> || quote_ident($1);
> end $$ LANGUAGE 'plpgsql' VOLATILE;
> ;
>
> select dist(mostype);
regards
Pavel Stehule>
> Your help is appreciated
>
> Scott
>
> --
> Sent via pgsql-general mailing list (pgsql-general@postgresql.org)
> To make changes to your subscription:
> http://www.postgresql.org/mailpref/pgsql-general
>
--
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