创建职工表以及职工工资表
职工表字段:工号,姓名,性别,年龄
工资表字段:编号自增,职工工号,基础工资10000
通过触发器实现:
对职工进行添加时 工资表中也要体现当前职工的信息
对职工进行修改时 工资表中也要一并修改当前职工的信息
对职工进行解聘时 工资表中也要一并删除当前员工的工资信息
建立职工表 职工工资表
sql
#职工表
CREATE TABLE worker (
id INT AUTO_INCREMENT PRIMARY KEY NOT NULL,
name VARCHAR(40) NOT NULL,
sex VARCHAR(4) NOT NULL,
age INT NOT NULL
);
#职工工资表
CREATE TABLE wage (
id INT AUTO_INCREMENT PRIMARY KEY NOT NULL,
name VARCHAR(20) NOT NULL,
salary DOUBLE(10,2)
);
建立添加触发器
sql
CREATE TRIGGER worker_insert_trigger
AFTER INSERT ON worker
FOR EACH ROW
BEGIN
INSERT INTO wage VALUES (NULL,new.name,10000);
END;
建立修改触发器
sql
CREATE TRIGGER worker_update_trigger
AFTER UPDATE ON worker
FOR EACH ROW
BEGIN
UPDATE wage SET name = new.name WHERE name = old.name;
END;
建立删除触发器
sql
CREATE TRIGGER worker_delete_trigger
AFTER DELETE ON worker
FOR EACH ROW
BEGIN
DELETE FROM wage WHERE name = old.name;
END;