查看identity列的值是否小于某个数字

Question

我试图查看标识列的值是否小于1.

IF (SELECT PKIdent FROM dbo.MyTable WHERE PKIdent < 1)
PRINT 'Its less than one'

Answer 1

以下两种方法可以做到这一点：

IF ((SELECT min(PKIdent) FROM dbo.MyTable) < 1)
    PRINT 'Its less than one'

或

IF exists (SELECT PKIdent FROM dbo.MyTable WHERE PKIdent < 1)
    PRINT 'Its less than one'