Assign Element To Index of Array with Attribute in PostgreSSQL - arrays

Question

Can I assign a value from cursor to index of array with attribute?
I have an oracle code like this :
cursor cursor1 is select name, value from table;
FOR loop1 IN cursor1 LOOP
array1.EXTEND;
array1(loop1).cur_name := cursor1.name;
array1(loop1).cur_value := cursor1.value;
END LOOP;
i tried to convert to postgresql like this, but it's getting error
CREATE FUNCTION function_name () RETURNS something AS $$
DECLARE
cursor1 cursor for select name, value from table;
array1 text[];
BEGIN
-- Do something
...
FOR loop1 IN cursor1 LOOP
array1[loop].cur_name := cursor1.name; --error here
array1[loop1].cur_value := cursor1.value; -- error here
END LOOP;
-- Do something
...
RETURN;
END;
is there any method to create an array with attibute name?

Answer 1

The Oracle function is returning a collection (An Associative Array if I remember correctly, but its been awhile). Postgres does NOT have collections, the closest data type is an array. However since your collection contains multiple columns, you need to create a UDT (user defined type}, then your function returns an array of that type. (Note I assumed the data types in the table. Correct as deeded.)
create type name_val as (name text, value integer);
create or replace function function_name ()
returns name_val[]
language plpgsql
as $$
declare
cursor1 cursor for
select name, value
from test
limit 10;
rec record;
array1 name_val[];
l_name_val name_val;
begin
-- do something
for rec in cursor1
loop
l_name_val.name = rec.name;
l_name_val.value = rec.value;
array1 = array1 || l_name_val;
end loop;
-- do something
return array1;
end;
$$;
There are a couple other option which avoid the cursor and looping altogether. Assuming you actually need any Array returned you can reduce the above function to a single sql statement:
create or replace function function_name3()
returns name_val[]
language sql
as $$
select array_agg((name, value)::name_val)
from test
limit 10;
$$;
Demo Here
UPDATE:
I noticed that subsequent to my answer you update the question from for loop1 in 1 .. 10 ... to for rec in cursor1 ... thus removing the resulting row limitation. You accomplish the same by just removing the Limit 10 clause.