"Claus Guttesen" <kometen(at)gmail(dot)com> writes:
> create or replace function update_hashcode() returns setof duplicates as
> $body$
> declare
> d duplicates%rowtype;
> h text;
> begin
> for d in select * from duplicates where length(hashcode) = 33 loop
> h := rtrim(d.hashcode, E'\n');
> update duplicates set hashcode = h where id = d.id;
> return next d;
> end loop;
> end
> $body$
> language 'plpgsql' ;
Why in the world are you using a for-loop for this at all? It would be
tremendously faster as a single SQL command:
update duplicates set hashcode = rtrim(hashcode, E'\n') where length(hashcode) = 33;
regards, tom lane