Question

我正在尝试创建一个程序，该程序返回一个包含我的数据库的一些信息的表，它按照酒店每种类型的信用卡使用的客户数列出了酒店的数量

请记住，有超过50家酒店和3种类型的信用卡，我希望程序在表格中运行数据和列表

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 ;

选择

的示例

 SELECT count(*)
 FROM fpcsmovatlantica201308tst04
 WHERE redeCartão like 'Cielo%'
 AND cnpjEstabelecimento like '02223966000466%'

cnpjEstabelecimento有多个值，超过100+，因此可以进行所有选择

我甚至不必使用程序来制作它，最终的结果是

SELECT cnpjEstabelecimento, redeCartão, count(*)
FROM fpcsmovatlantica201308tst04
WHERE redeCartão like 'Cielo%'
GROUP BY cnpjEstabelecimento,redeCartão like 'Cielo%'
ORDER BY cnpjEstabelecimento ASC;

Answer 1

我假设你有一张桌子，看起来像这样：

|hotelId|cardType|etc...

我会选择：

Select hotelId, cardType, count(*)
from myTable
group by hotelId, cardType

我使用以下SQL测试了它here：

SELECT country, city, count(*)
from customers
group by country, city
ORDER BY Country;

使用过程构建表

1 个答案: