字段名 ? 數據類型 主鍵 外鍵 非空 唯一 自增

id? INT ?是? ?否? ? 是? ? 是? 否

name VARCHAR(50)? 否? ?否? ? 是? ? 否? 否

glass? ?VARCHAR(50)? 否? ?否? ? 是? ? 否? 否

mysql> create table sch (-> id int primary key not null unique,-> name varchar(50) not null,-> glass varchar(50) not null-> );

sch 表內容

id name glass

1 xiaommg glass 1

2? xiaojun glass 2

 insert into sch values('1','xiaommg','glass 1'),('2','xiaojun','glass 2');

select * from sch ;

1、創建一個可以統計表格內記錄條數的存儲函數 ，函數名為count_sch()

1.1創建函數

mysql> \d $$
mysql> create procedure count_sch()-> begin ->      select count(*) from sch;-> end $$
Query OK, 0 rows affected (0.00 sec)mysql> \d ;

1.2叫一下函數

mysql> call count_sch();

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2、創建一個存儲過程avg_sai，有3個參數，分別是deptno，job，接收平均工資，功能查詢emp表dept為30，job為銷售員的平均工資。（使用之前的emp表）

2.1創建emp表

CREATE TABLE `emp`  (`empno` int(4) NOT NULL,`ename` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,`job` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,`mgr` int(4) NULL DEFAULT NULL,`hiredate` date NOT NULL,`sai` int(255) NOT NULL,`comm` int(255) NULL DEFAULT NULL,`deptno` int(2) NOT NULL,PRIMARY KEY (`empno`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;

2.2插入數據

INSERT INTO `emp` VALUES (1001, '甘寧', '文員', 1013, '2000-12-17', 8000, NULL, 20);
INSERT INTO `emp` VALUES (1002, '黛綺絲', '銷售員', 1006, '2001-02-20', 16000, 3000, 30);
INSERT INTO `emp` VALUES (1003, '殷天正', '銷售員', 1006, '2001-02-22', 12500, 5000, 30);
INSERT INTO `emp` VALUES (1004, '劉備', '經理', 1009, '2001-04-02', 29750, NULL, 20);
INSERT INTO `emp` VALUES (1005, '謝遜', '銷售員', 1006, '2001-09-28', 12500, 14000, 30);
INSERT INTO `emp` VALUES (1006, '關羽', '經理', 1009, '2001-05-01', 28500, NULL, 30);
INSERT INTO `emp` VALUES (1007, '張飛', '經理', 1009, '2001-09-01', 24500, NULL, 10);
INSERT INTO `emp` VALUES (1008, '諸葛亮', '分析師', 1004, '2007-04-19', 30000, NULL, 20);
INSERT INTO `emp` VALUES (1009, '曾阿牛', '董事長', NULL, '2001-11-17', 50000, NULL, 10);
INSERT INTO `emp` VALUES (1010, '韋一笑', '銷售員', 1006, '2001-09-08', 15000, 0, 30);
INSERT INTO `emp` VALUES (1011, '周泰', '文員', 1006, '2007-05-23', 11000, NULL, 20);
INSERT INTO `emp` VALUES (1012, '程普', '文員', 1006, '2001-12-03', 9500, NULL, 30);
INSERT INTO `emp` VALUES (1013, '龐統', '分析師', 1004, '2001-12-03', 30000, NULL, 20);
INSERT INTO `emp` VALUES (1014, '黃蓋', '文員', 1007, '2002-01-23', 13000, NULL, 10);
INSERT INTO `emp` VALUES (1015, '張三', '保潔員', 1001, '2013-05-01', 80000, 50000, 50);

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2.3創建avg_sai

mysql>\d $$
mysql> create procedure avg_sai(in a1 int ,in a2 varchar(50),out a3 int)-> begin->      select avg(sai) into a3 from emp->      where deptno = a1 and job = a2;-> end $$
Query OK, 0 rows affected (0.00 sec)mysql> \d ;

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mysql> call avg_sai(30,'銷售員',@xx);

ERROR 1366 (HY000): Incorrect string value: '\xE9\x94\x80\xE5\x94\xAE...' for column 'a2' at row 1?

炸裂

有待完善。

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