Re: Declaring empty, non-NULL array in plpgsql

This avoids the NULL problem - is there a better way?

    aCats varchar[] = array[''''];
    vCats varchar;
    iIndex int := 1;
    rItem record;

    ...

    for rItem in select ... loop
        aCats[iIndex] := rItem.name;

        iIndex := iIndex + 1;
    end loop;

    vCats := array_to_string(aCats, '','');
    ...



--- CSN <cool_screen_name90001@yahoo.com> wrote:
> Is there a way to declare an array in plpgsql so
> that
> it's empty (not NULL)? The following causes arr to
> end
> up being NULL:
>
> arr varchar[];
> -- do stuff with arr..
> arr = array_append(arr, '','');
>
>
> And this causes an unwanted element at the front:
>
> arr varchar[] := array[''''];
> -- do stuff with arr..
> arr = array_append(arr, '','');
>
>
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