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创建职工表以及职工工资表职工表字段#xff1a;工号#xff0c;姓名#xff0c;性别#xff0c;年龄工资表字段#xff1a;编号自增#xff0c;职工工号#xff0c;基础工资10000通过触发器实现#xff1a;对职工进行添加时 工资表中也要体现当前职…题目
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
创建职工表 CREATE TABLE Workers ( WorkerID INT PRIMARY KEY AUTO_INCREMENT COMMENT 职工工号, Name VARCHAR(255) COMMENT 职工姓名, Sex ENUM(W,M) COMMENT 性别, Age INT COMMENT 年龄 ); 创建工资表 CREATE TABLE Wages ( ID INT PRIMARY KEY AUTO_INCREMENT COMMENT 编号, WorkerID INT NOT NULL COMMENT 职工工号, Salary DOUBLE(10,2) COMMENT 工资, FOREIGN KEY(WorkerID) REFERENCES Workers(WorkerID) ); 添加新增信息时工资表随职工表增添信息的触发器 DELIMITER $$ CREATE TRIGGER WorkersInsertRecord AFTER INSERT ON Workers FOR EACH ROW BEGIN INSERT INTO Wages VALUES (NULL,new.WorkerID,10000); END $$ DELIMITER ; 插入数据并查看两表变化判断触发器是否成功 INSERT INTO Workers VALUES (1,张三,M,20); INSERT INTO Workers VALUES (2,李四,M,32); INSERT INTO Workers VALUES (3,王舞,W,23); 添加职工信息表信息更新时工资表同时更新的触发器 DELIMITER $$ CREATE TRIGGER WorkerUpdateRecord AFTER UPDATE ON Workers FOR EACH ROW BEGIN UPDATE Wages SET WorkerID new.WorkerID WHERE WorkerID old.WorkerID; END $$ DELIMITER ; 更新职工表信息查看两表变化 UPDATE Workers SET WorkerID 10 WHERE WorkerID 3; 添加职工信息表信息删除信息时工资表同时删除对应信息的触发器 DELIMITER $$ CREATE TRIGGER WorkersDeleteRecord AFTER DELETE ON Workers FOR EACH ROW BEGIN DELETE FROM Wages WHERE WorkerID old.WorkerID; END $$ DELIMITER ; 删除职工信息查看两表的变化 DELETE FROM Workers WHERE WorkerID 2;
