MySQL存储过程例子

-- 索引 INDEX
CREATE INDEX idx_sname ON student( sname(4));

ALTER TABLE teacher add index idx_tname(tname);

DROP INDEX idx_sname on student;

-- 视图 VIEW
create VIEW v_stu
AS
 SELECT sname,degree from student s, score sc
 where s.sno=sc.sno;

SELECT * from v_stu;

-- 存储过程 PROCEDURE
--  创建 INSERT PROCEDURE
DROP PROCEDURE IF EXISTS `P_INSERT_STUDENT`; 
CREATE PROCEDURE P_INSERT_STUDENT(
 IN xueH VARCHAR(3),
 IN xingM VARCHAR(4),
 IN xingB VARCHAR(2),
 IN shengR DATETIME,
 IN banJ VARCHAR(5)
) 
BEGIN 
     SET @xueH = xueH; 
     SET @xingM = xingM; 
     SET @xingB = xingB;
     SET @shengR = shengR; 
   SET @banJ = banJ;  
     SET @insertSql = CONCAT('INSERT INTO STUDENT VALUES(?,?,?,?,?)'); 
     PREPARE stmtinsert FROM @insertSql; 
     EXECUTE stmtinsert USING @xueH,@xingM,@xingB,@shengR,@banJ; 
     DEALLOCATE PREPARE stmtinsert; 
END; 
 -- 存储过程调用
CALL P_INSERT_STUDENT(412,'黄一','女','1990-12-01 10:20:01','304'); 
CALL P_INSERT_STUDENT(413,'黄二','男','1992-12-01 10:20:01','304'); 
CALL P_INSERT_STUDENT(414,'黄三','男','1993-12-01 10:20:01','304'); 
CALL P_INSERT_STUDENT(416,'黄五','女','1992-02-01 10:20:01','304'); 

 -- 结果验证
SELECT * from student;

-- 创建存储过程 查询
DROP PROCEDURE IF EXISTS `pro_get_info`;
CREATE PROCEDURE pro_get_info(
 IN ckh VARCHAR(5)
)
BEGIN
 SET @ckh=ckh;
 SET @selectSQL = CONCAT('select s.*,cno,DEGREE from student s,score sc
 where s.sno=sc.sno and cno=?'); 
     PREPARE stmtSELECT FROM @selectSQL; 
     EXECUTE stmtSELECT USING @ckh; 
     DEALLOCATE PREPARE stmtSELECT; 
END;

CALL pro_get_info('3-105');
CALL pro_get_info('3-245');

--  触发器 TRIGGER
-- 创建 INSERT TRIGGER
DROP TRIGGER IF EXISTS `t_insert_score`;
CREATE TRIGGER t_insert_score AFTER INSERT ON student FOR EACH ROW
BEGIN
  DECLARE sno VARCHAR(3) ;
  DECLARE cno VARCHAR(35) ;
  DECLARE degree DECIMAL(10) ;
    INSERT into score VALUES(111,'3-105','99');
END;
-- 结果验证
SELECT * from score;
##################################################
#  批量造数据，插入数据库
####################################################

#创建测试表
DROP TABLE IF EXISTS test.test;
CREATE TABLE test.test(
 id int(10) not null auto_increment,
 a int(10) not null,
 b int(10) not null,
 c int(10) not null,
 PRIMARY key (`id`)
)ENGINE INNODB DEFAULT CHARSET utf8 COMMENT '测试表';
 

#清空数据
TRUNCATE table test.test;
 
#定义存储过程
delimiter //
DROP PROCEDURE IF EXISTS insert_test_val;
##num_limit 要插入数据的数量,rand_limit 最大随机的数值
CREATE PROCEDURE insert_test_val(
 in num_limit int,
 in rand_limit int)
BEGIN
 
 DECLARE i int default 1;
 DECLARE a int default 1;
 DECLARE b int default 1;
 DECLARE c int default 1;
 
 WHILE i<=num_limit do
  set a = FLOOR(rand()*rand_limit);
  set b = FLOOR(rand()*rand_limit);
  set c = FLOOR(rand()*rand_limit);
  INSERT into test.test values (null,a,b,c);
  set i = i + 1;
 END WHILE;
END
//
 
#调用存储过程
call insert_test_val(1000,10);

########################################################

DROP PROCEDURE IF EXISTS mytest; --判断进程是否存在，存在则删除
CREATE PROCEDURE mytest()  --新建进程
BEGIN
declare i int; 
DECLARE j varchar(200);
　　set i = 2;
　　while i < 11 do  --循环体
　　　　SET j=CONCAT('wwq',i);  --拼接字符串
　　　　INSERT INTO pub_user(`ID`, `NAME`, `ACCOUNT`, `PASSWORD`, `USER_CODE`)
　　　　VALUES (i, '王馨', j, 'e10adc3949ba59abbe56e057f20f883e', '');

　　　　INSERT INTO pub_user_post (`POST_CODE`, `USER_CODE`)
　　　　VALUES (i, 'A685187D29AF4AD793F2753DC17C1435');

　　　　INSERT INTO pub_user_role (`ROLE_CODE`, `USER_CODE`, `APP_CODE`)
　　　　VALUES ('95AC32C8B9874B4085A01187C341067B', i, 'INSPUR-DZZW-TYSP');

　　　　set i=i+1;
　　end while;

end  --结束定义语句

call mytest();  --调用进程