Re: How to count the number of items in an Array?

Hi,

 

Thanks for the reply.

 

My problem is that I can't have the array with all items. I need to read from a table and store in an Array the values.

 

I have this:

 

[code]

CREATE OR REPLACE FUNCTION "public"."apr_update_newsletter_distritos" ("pEMAIL" varchar, "pID_WEBSITE_RECOLHA" varchar) RETURNS void AS
$body$
DECLARE
    pEMAIL       alias for $1; -- vai ser preciso
    pID_WEBSITE_RECOLHA   alias for $2; -- vai ser preciso
    vDISTRITOS_NA_TABELA  varchar[];
    vDISTRITOS_NA_TABELA_CONST varchar[];
    vd integer;
    vas varchar;
BEGIN
 -- ### Vou gravar num array os registos da chave em q se vai mexer
    -- vou entao passar os registos para o array vDISTRITOS_NA_TABELA
    FOR vDISTRITOS_NA_TABELA IN
    SELECT array[id_distrito] FROM am_newsletter_distritos
    WHERE email = pEMAIL and id_website_recolha = pID_WEBSITE_RECOLHA   
  LOOP
    RAISE NOTICE 'value: %', vDISTRITOS_NA_TABELA;
    END LOOP;
   
    -- array 2 string
    select array_to_string(vDISTRITOS_NA_TABELA, ',') into vas;
 RAISE NOTICE 'string with items of array: %', vas;
   
    -- Vou contar o número dos registos do array
    -- select array_upper(vDISTRITOS_NA_TABELA, 1) into vd;
    -- RAISE NOTICE 'num array: %', vd;
END;
$body$
LANGUAGE 'plpgsql' VOLATILE CALLED ON NULL INPUT SECURITY INVOKER;

[/code]

This select returns me 4 values:

[code]

    SELECT array[id_distrito] FROM am_newsletter_distritos
    WHERE email = pEMAIL and id_website_recolha = pID_WEBSITE_RECOLHA   

[/code]

 

The values are '11, 12,16, 16'. I haven't found a way to store this as an array to the variable vDISTRITOS_NA_TABELA. Someone can give me a clue on how to do that?

 

Best Regards,