MYSQL创建存储过程包括DELETE、SELECT和INSERT

Question

我阅读手册，我可以创建简单的存储过程。 它的工作正常。但现在我需要为我创建复杂的程序，包括 DELETE、SELECT 和 INSERT

第一：

delete from 111test;

下一步：

SELECT u.user_id, u.user_nickname, u.country_id, u.city_id, u.avatar_id,
  (SELECT name FROM countries WHERE id = u.country_id) country_name,
  (SELECT name FROM cities WHERE id = u.city_id) city_name
FROM users_onsite uo 
LEFT JOIN users u ON u.user_id = uo.user_id
WHERE u.avatar_id > 0;

接下来：

INSERT INTO 111test (type,user_id,some_datas1,some_datas2,some_datas3) 
  values (53,$user_id,'$user_nickname',$country_name','$city_name')

所以，我的程序是：

BEGIN

DECLARE var_user_id INT(50);
DECLARE var_some_datas1 varchar(255);
DECLARE var_some_datas2 varchar(255);
DECLARE var_some_datas3 varchar(255);

delete from 111test;

SELECT u.user_id, u.user_nickname, u.country_id, u.city_id, u.avatar_id,
  (SELECT name FROM countries WHERE id = u.country_id) country_name,
  (SELECT name FROM cities WHERE id = u.city_id) city_name
  FROM users_onsite uo 
  LEFT JOIN users u ON u.user_id = uo.user_id
  WHERE u.avatar_id > 0;

INSERT INTO  111test (type,user_id,some_datas1,some_datas2,some_datas3)
  VALUES (53,var_user_id,var_some_datas1,var_some_datas2,var_some_datas3);

END

结果：您的 SQL 查询已成功执行 1172 行，受过程中最后一条语句的影响

但是在表 111test 中插入了零行。

请有人帮助我。

Answer 1

那么，这里的障碍是什么。您可以创建包含 DML 操作的过程。请参阅下面的示例（尽管在 SQL Server 中创建）

create procedure sp_crud_test
as
begin
delete from sample1;

select * from sample3;

insert into sample1 select * from sample3;
end

exec sp_crud_test

所以在你的情况下，它会是这样的

delimiter //
CREATE PROCEDURE sp_crud_test (IN 
user_id int, IN user_nickname varchar(10),
IN country_name varchar(10),IN city_name varchar(10))
BEGIN
delete from 111test;

SELECT u.user_id, u.user_nickname, u.country_id, u.city_id, u.avatar_id,
  (SELECT name FROM countries WHERE id = u.country_id) country_name,
  (SELECT name FROM cities WHERE id = u.city_id) city_name
FROM users_onsite uo 
LEFT JOIN users u ON u.user_id = uo.user_id
WHERE u.avatar_id > 0;

INSERT INTO 111test (type,user_id,some_datas1,some_datas2,some_datas3) 
  values (53,user_id,user_nickname,country_name,city_name)
END//

不如这样称呼

CALL sp_crud_test(10,'tk','US','london')

编辑： 现在我知道了，您正在尝试将您的选择查询值插入到该表中；应该像下面这样完成

delimiter //
CREATE PROCEDURE sp_crud_test
BEGIN
delete from 111test;

INSERT INTO 111test (type,user_id,some_datas1,some_datas2,some_datas3) 
SELECT '53' as type, u.user_id, u.user_nickname,
  (SELECT name FROM countries WHERE id = u.country_id) country_name,
  (SELECT name FROM cities WHERE id = u.city_id) city_name
FROM users_onsite uo 
LEFT JOIN users u ON u.user_id = uo.user_id
WHERE u.avatar_id > 0;    
END//

然后像这样调用

CALL sp_crud_test