Question

我想知道是否可以在sql查询中使用<> 1, 2, 3, ...etc表示一组数字（ID）。以下是我的询问：

SELECT DISTINCT dName
FROM department
    INNER JOIN employee ON employee.id_Dept = department.id_Dept
    INNER JOIN emp_proj ON employee.id_Emp = emp_proj.id_Emp
    INNER JOIN project ON project.id_proj = emp_proj.id_proj
WHERE project.id_Proj <> 1, 2, 3, 4, 5, 6;

Answer 1

您可以使用NOT IN。

SELECT DISTINCT dName
FROM department
INNER JOIN employee ON employee.id_Dept = department.id_Dept
INNER JOIN emp_proj ON employee.id_Emp = emp_proj.id_Emp
INNER JOIN project ON project.id_proj = emp_proj.id_proj AND project.id_Proj NOT IN {1, 2, 3, 4, 5, 6};

Answer 2

使用＆＃39;＆＃39;运营商解决上述问题..

以下是示例代码

select * from department where dept_id in (1,2,3);

以上查询将仅生成dept_id为1,2或3的记录

Answer 3

改变这个

WHERE project.id_Proj <> 1, 2, 3, 4, 5, 6;

到这个

WHERE project.id_Proj NOT IN ( 1, 2, 3, 4, 5, 6);

如何在sql查询中表示一组数字

3 个答案: