Comments on: SQL Puzzle: SQL Advance Query – To generate the account balance column for Bank Accounts

By: Anand Kumar

Anand Kumar — Mon, 25 May 2020 03:25:56 +0000

Is it possible to get a blank line after change in accname ?

By: Samrat

Samrat — Thu, 24 Oct 2019 07:45:25 +0000

SELECT * ,
SUM(CASE WHEN TYPE = ‘DB’ THEN Amount*-1 ELSE Amount END) OVER (PARTITION BY AccName ORDER BY AccName,TransactionDate ) AS BALANCE
FROM dbo.ACCOUNTBALANCE

By: Sai Nath

Sai Nath — Sun, 11 Aug 2019 07:18:24 +0000

; WITH CTE AS
(
SELECT
*,
ROW_NUMBER() OVER(PARTITION BY ACCNAME ORDER BY (SELECT 1)) AS RW
FROM
AccountBalance
)

SELECT
*,
SUM(CASE WHEN TYPE = ‘DB’ THEN -AMOUNT ELSE AMOUNT END) OVER(PARTITION BY ACCNAME ORDER BY RW)
FROM
CTE

By: Deepak Tomar

Deepak Tomar — Thu, 18 Jul 2019 10:06:17 +0000

Hi Avnesh ,

There is a window function that can do the same task as well.

;WITH cte AS (
SELECT
[TransactionDate]
,[AccName]
,[Type]
,[Amount]
,CASE WHEN [Type] = ‘DB’ THEN -1 * [Amount]
ELSE [Amount] END AS [NewAmount]
FROM AccountBalance

)

SELECT
[TransactionDate]
,[AccName]
,[Type]
,[Amount]
, SUM(cte.NewAmount) OVER (PARTITION BY [AccName] ORDER BY [TransactionDate] ROWS UNBOUNDED PRECEDING) AS [AccountBalance]
FROM cte

By: Ankesh Patel

Ankesh Patel — Mon, 15 Jul 2019 09:01:33 +0000

Update AccountBalance
set amount=amount*-1
where type=’DB’

–then give rank based on the account in the given table itself

select
TransactionDate,
Accname,
Type,
Amount,
IDs,
(select sum(amount) from AccountBalance a where a.accname=b.accname and a.rank<=b.rank) real_time_balance
from AccountBalance b