选择不在另一个表中的行,SQL Server 查询 [英] Select rows not in another table, SQL Server query
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问题描述
主题表
CREATE TABLE [dbo].[BS_Subject](
[SubjectID] [bigint] IDENTITY(1,1) NOT NULL,
[DepartmentID] [bigint] NOT NULL,
[SubjectName] [varchar](50) NOT NULL,
[SubjectDescription] [varchar](100) NULL,
[SubjectShortCode] [varchar](10) NOT NULL,
CONSTRAINT [PK_Subject] PRIMARY KEY CLUSTERED
(
[SubjectID] ASC
)
SubjectToClass 表
SubjectToClass table
CREATE TABLE [dbo].[BS_SubjectToClass](
[SubjectToClassID] [bigint] IDENTITY(1,1) NOT NULL,
[SubjectID] [bigint] NOT NULL,
[ClassID] [bigint] NOT NULL,
CONSTRAINT [PK_BS_SubjectToClass] PRIMARY KEY CLUSTERED
(
[SubjectToClassID] ASC
)
我需要列出 Subject
表中的所有行,其中 subjectid
不在指定类的 SubjectToClass
表中.
I need list all the rows in the Subject
table where subjectid
is not in SubjectToClass
table of a specified class.
我有这个但不能再继续了
I have this but unable to go any further
select Distinct(BS_Subject.SubjectID) DepartmentID,
SubjectName, SubjectDescription, SubjectShortCode
from dbo.BS_Subject
where BS_Subject.SubjectID <> (
SELECT Distinct(BS_Subject.SubjectID)
FROM dbo.BS_Subject, dbo.BS_SubjectToClass
Where BS_Subject.SubjectID = BS_SubjectToClass.SubjectID
And BS_SubjectToClass.ClassID = 2)
推荐答案
SELECT SubjectID, DepartmentID, SubjectName, SubjectDescription, SubjectShortCode
FROM BS_Subject
WHERE NOT EXISTS
(SELECT SubjectToClassID FROM BS_SubjectToClass WHERE
BS_Subject.SubjectID = BS_SubjectToClass.SubjectID
AND BS_SubjectToClass.ClassID =2)
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