Building an table using procedures - mysql

Question

i'm trying to create an procedure that returns an table with some information of my database, it lists the number of the HOTEL by how many clients used each type of their credit cards on the hotel
Keeping in mind that there is more than 50 hotels and 3 types of credit cards, i want the procedure to run through the data and list then in the table
DELIMITER //
DROP PROCEDURE IF EXISTS `testing` //
CREATE PROCEDURE `testing`(OUT param1 VARCHAR(40))
BEGIN
DECLARE id_cnpjEstabelecimento VARCHAR(40);
DECLARE id_redeCartão VARCHAR(255);
SELECT (cnpjEstabelecimento)
FROM fpcsmovatlantica201308tst04;
SET id_cnpjEstabelecimento := cnpjEstabelecimento;
SELECT (id_redeCartão)
FROM fpcsmovatlantica201308tst04;
SET id_redeCartão := id_redeCartão;
SELECT count(*)
FROM fpcsmovatlantica201308tst04;
WHERE redeCartão like 'id_redeCartão%';
AND cnpjEstabelecimento like 'id_cnpjEstabelecimento%';
END //
DELIMITER ;
An example of an select
SELECT count(*)
FROM fpcsmovatlantica201308tst04
WHERE redeCartão like 'Cielo%'
AND cnpjEstabelecimento like '02223966000466%'
the cnpjEstabelecimento got several values, more than 100+, so it's inviable to make all the selects
I don't even have to use procedures to make it, the final result was
SELECT cnpjEstabelecimento, redeCartão, count(*)
FROM fpcsmovatlantica201308tst04
WHERE redeCartão like 'Cielo%'
GROUP BY cnpjEstabelecimento,redeCartão like 'Cielo%'
ORDER BY cnpjEstabelecimento ASC;

Answer 1

I'm assuming you have one table, which looks kind of like this:
|hotelId|cardType|etc...
I'd go with:
Select hotelId, cardType, count(*)
from myTable
group by hotelId, cardType
I tested it here with the following SQL:
SELECT country, city, count(*)
from customers
group by country, city
ORDER BY Country;