Comments on: SQL Puzzle: SQL Advance Query – Generate Row number without any default function

By: Phanindra Suripeddi

Phanindra Suripeddi — Fri, 02 Aug 2019 08:03:23 +0000

select id,(select count(1) From tbl_Numbers b where b.id<=a.id) Rownumber From tbl_Numbers a
Order by Rownumber

By: Anvesh Patel

Anvesh Patel — Thu, 12 Oct 2017 08:01:21 +0000

In reply to Dinesh.IS. thanks :)

By: Dinesh.IS

Dinesh.IS — Thu, 12 Oct 2017 07:04:22 +0000

–This is best way to reach the goal
Declare @RowNumber Table(ID Int,RowNumber Int Identity(1,1) Not Null)
Insert Into @RowNumber
Select * From TBL_Numbers

Select * From @RowNumber

By: Dinesh.IS

Dinesh.IS — Wed, 11 Oct 2017 13:31:10 +0000

–Method-3
;
WITH CTE
As
(Select * From TBL_Numbers)
Select *,(Select Count(ID) From CTE B Where B.ID From CTE A
Order By RowNumber

By: Dinesh.IS

Dinesh.IS — Wed, 11 Oct 2017 13:29:03 +0000

–Method-2
Declare @GenerateUniqueNumber Table(ID Int,RowNumber Int)
Declare @ID As Int
Declare @Row As Int;
Set @Row=0
Declare Cur Cursor For Select ID From TBL_Numbers
Open Cur
Fetch Next From Cur Into @ID
While @@Fetch_Status=0
Begin

Insert Into @GenerateUniqueNumber
Values(@ID,@Row)
Set @Row=@Row+1

Fetch Next From Cur Into @ID
End
Close Cur
Deallocate Cur
Select * From @GenerateUniqueNumber

By: Dinesh.IS

Dinesh.IS — Wed, 11 Oct 2017 13:28:07 +0000

–Method-1
Declare @GenerateUniqueNumber Table(ID Int,RowNumber Int)
Declare @Amt Int;
Declare @Cnt As Int;
Declare @ID As Int;
Select @Amt=Min(ID) From TBL_Numbers
Set @ID=0
While @Amt Is Not Null
Begin

Insert Into @GenerateUniqueNumber
(ID,RowNumber)
Values(@ID,@Amt)
Set @ID=@ID+1
Select @Amt=Min(ID) From TBL_Numbers Where ID>@Amt
End