Sql Server - Find Missing Number in Sequence


Sql Server - Find Missing Number in Sequence

Select * from 
(
SELECT Min([GPNo]) AS StartPos , Max(GPNO) as EndPos FROM [tempdb].[dbo].[Table_1]
) SRC
Outer apply
(
Select Top(EndPOs) Row_Number() Over (Order by Name) as RNO from Sys.columns
) X
Left outer join Table_1  on Table_1.GpNo = RNO
Where GPNO Is NULL

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