-- 文件名:data_update_scripts.sql -- 这是为员工考勤管理系统编写的更新操作(UPDATE)和删除操作(DELETE)SQL脚本 -- 1. 更新操作(UPDATE) -- 更新员工“孙晓”的职位为“高级软件工程师” UPDATE Employee SET Position = '高级软件工程师' WHERE Name = '孙晓'; -- 将“杨洋”的入职日期更新为“2024-06-01” UPDATE Employee SET HireDate = '2024-06-01' WHERE Name = '杨洋'; -- 更新部门ID为‘D003’的部门主管为‘刘晨’ UPDATE Department SET ManagerID = 'E008' WHERE DepartmentID = 'D003'; -- 更新员工“赵丽”的联系方式为“12345678911” UPDATE Employee SET ContactInfo = '12345678911' WHERE Name = '赵丽'; -- 修改“2024-12-02”至“2024-12-06”期间的所有请假记录状态为“已批准” UPDATE LeaveRequest SET RequestStatus = '已批准' WHERE StartDate BETWEEN '2024-12-02' AND '2024-12-06'; -- 更新2024年12月1日员工“王强”的考勤状态为“迟到” UPDATE Attendance SET AttendanceStatus = '迟到' WHERE EmployeeID = 'E003' AND AttendanceDate = '2024-12-01'; -- 修改“张伟”在“2024-06-01”到“2024-06-30”期间的所有假期天数为3天 UPDATE LeaveRequest SET LeaveDays = 3 WHERE EmployeeID = 'E001' AND StartDate BETWEEN '2024-06-01' AND '2024-06-30'; -- 将“刘晨”所有加班时长更新为0 UPDATE Attendance SET OvertimeHours = 0 WHERE EmployeeID = 'E008'; -- 为员工“赵丽”设置新的密码 UPDATE UserLogin SET Password = 'new_password123' WHERE EmployeeID = 'E004'; -- 2. 删除操作(DELETE) -- 删除员工“李娜”的所有考勤记录 DELETE FROM Attendance WHERE EmployeeID = 'E002'; -- 删除所有状态为“已拒绝”的假期申请记录 DELETE FROM LeaveRequest WHERE RequestStatus = '已拒绝'; -- 删除所有职位为“技术总监”的员工记录 DELETE FROM Employee WHERE Position = '技术总监'; -- 删除部门为“市场部”的所有员工 DELETE FROM Employee WHERE DepartmentID = 'D004'; -- 删除2024年1月1日到2024年1月31日期间所有请假记录 DELETE FROM LeaveRequest WHERE StartDate BETWEEN '2024-12-01' AND '2024-12-05'; -- 删除所有考勤记录为“早退”的记录 DELETE FROM Attendance WHERE AttendanceStatus = '早退'; -- 删除所有2024年12月1日到2024年12月15日已批准的年假记录 DELETE FROM LeaveRequest WHERE LeaveType = '年假' AND RequestStatus = '已批准' AND StartDate BETWEEN '2024-12-01' AND '2024-12-15';