Comments on: SQL Puzzle: SQL Advance Query – Find the Column name which has all NULL

By: Dinesh I.S

Dinesh I.S — Tue, 10 Oct 2017 13:42:28 +0000

Select
(Case When Col1 Is Null Then ‘Col1’ Else ” End)+
(Case When Col2 Is Null Then ‘Col2’ Else ” End)+
(Case When Col3 Is Null Then ‘Col3’ Else ” End) As NullColumnName
From (Select Top 1 * From TBL_IDS) A

By: Dinesh I.S

Dinesh I.S — Tue, 10 Oct 2017 13:18:42 +0000

Select Description As NullColumnName
From (Select Top 1 IsNull(Col1,0) As Col1,IsNUll(Col2,0) As Col2,IsNull(Col3,0) As Col3 From TBL_IDS) A
UNPIVOT(Value For Description In([Col1],[Col2],[Col3])) A
Where Value=0