MySQL循环插入语法

Posted 2020-10-22 巴黎之雾

单个循环插入多条数据

DELIMITER ;; 
CREATE PROCEDURE test_insert() 
BEGIN 
DECLARE y int DEFAULT 1;
WHILE y<20
DO
insert into school_sp_mj(school_id,mojor_id,status) values(1,y,1); 
SET y=y+1; 
END WHILE ; 
commit; 
END;; //可以先到这里检测语法
CALL test_insert();//执行以上sql

 

双重循环插入

DELIMITER ;; 
CREATE PROCEDURE test_insert()

BEGIN 
DECLARE a INT DEFAULT 1; 
DECLARE b TINYINT DEFAULT 1; 
WHILE (a <= 100) DO 
-- repeat 


SET a = a + 1; 
-- select a; 
WHILE (b <=20) DO 
insert into school_sp_mj(school_id,mojor_id,status) values(a,b,1); 
SET b = b + 1; 
-- select b; 
END WHILE; 

SET b = 1; 
-- select a; 
-- until a >= i_PlayerCount 
-- end repeat; 
END WHILE; 
commit; 
END;; 
CALL test_insert();