Arrays in PL/PGSQL

Hello,

Does PL/PGSQL support arrays? Or is their a mechanism to select a set of
records from a table and iterate over all of them.

For example:

DECLARE recs AS RECORDS; //??
BEGIN
SELECT INTO recs * FROM mytable WHERE myfield = 'myvalue';
for i in 1 .. NumRecs loop
    ...
end loop;

Is there a way to do something like this??

Wade Oberpriller