为什么此条目不插入

Question

我正在尝试在表Class Rights中插入新行。当我执行此代码并查看表时，它不存在/未进行任何更改。为什么是这样？它是否与播种有关，或者可能没有正确声明某些内容。

DECLARE @ID INT; 

IF NOT EXISTS ( SELECT 1 FROM dbo.ClassRights WHERE FKClassID = 2100000000 )      
BEGIN

    INSERT INTO dbo.ClassRights (FKCategoryID, FKClassID, FKRightsID)
    SELECT 77, 2100000000, 4029
    FROM dbo.ClassRights
END



IF EXISTS (SELECT * from ClassRights)
BEGIN
    SELECT TOP 1 @ID = ClassRightsID FROM ClassRights WHERE ClassRightsID < 1000000000 ORDER BY ClassRightsID DESC
    SET @ID = @ID + 1
    DBCC CHECKIDENT(ClassRights, RESEED, @ID)
END