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创建一个名为VDept_Headcount的视图,该视图报告每个部门的人员总数。该报告包括3列如下:Dept_Name,Dept_Number,No_Emp。包括所有部门。显示视图,通过SQL的内容(从VDept_Headcount选择*;)更改我的代码中的视图,不能在时间添加行乘数
USE COMPANY
GO
--1-1) Create a view named VDept_Headcount that reports headcount for each department.
CREATE VIEW VDept_Headcount(Dept_Name, Dept_Number, No_Emp)
AS
SELECT d.DNAME, d.DNUMBER, COUNT(e.DNO)
FROM DEPARTMENT d LEFT OUTER JOIN EMPLOYEE e ON e.DNO = d.DNUMBER
GROUP BY d.DNAME, d.DNUMBER;
GO
SELECT *
FROM VDept_Headcount;
USE COMPANY
GO
--Add yourself into Employee
INSERT INTO EMPLOYEE
VALUES('Dan', NULL, 'Chan', '122345687', '13-Nov-1948', '323 Williams Ct, Columbus, OH', 'M', 55000, '987654321', 5);
SELECT *
FROM VDept_Headcount;
基本上我想知道有没有办法来添加行不使用Groupon的?