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Hi all.
First Photo
Second Photo
From the screenshots shown above, the first photo is how my data is seen now. I would require the serial numbers to be filtered and grouped together and the difference between each rows to be calculated. The last row should subsequently return a null value and the second photo is how the data should be arranged at the end. Help for this would be appreciated.
Solved! Go to Solution.
Hi,
Please check the below picture and the attached pbix file.
It is for creating measures.
Voltage measure: =
IF ( HASONEVALUE ( Data[Serial No] ), SUM ( Data[Voltage] ) )
Row Diff measure: =
VAR _currentvoltage = [Voltage measure:]
VAR _currentrow =
MAX ( 'Test Type'[Index] )
VAR _nextrow =
MINX (
FILTER ( ALL ( 'Test Type' ), 'Test Type'[Index] > _currentrow ),
'Test Type'[Index]
)
VAR _nextrowvoltage =
CALCULATE (
[Voltage measure:],
FILTER ( ALL ( 'Test Type' ), 'Test Type'[Index] = _nextrow )
)
RETURN
IF (
HASONEVALUE ( 'Serial No'[Serial No] ),
IF ( ISBLANK ( _nextrow ), "null", _currentvoltage - _nextrowvoltage )
)
For fun only, T-sql solution
SELECT *
INTO #tmp
FROM
(
VALUES ('ABS1000','FUNC',3.728),('ABS2000','REC',3.899),('ABS3000','AUDIO',4.321),('ABS3000','FUNC',4.521),('ABS2000','FUNC',4.002),('ABS1000','REC',3.701),('ABS1000','AUDIO',3.752),('ABS2000','AUDIO',4.211),('ABS3000','REC',4.111)
) TB([SN],[TYPE],[VOLTAGE])
;WITH cte
AS (SELECT T.SN
, T.TYPE
, VOLTAGE
, O.[Order]
FROM #tmp T
JOIN
(
SELECT *
FROM
(
VALUES
(1, 'FUNC')
, (3, 'REC')
, (2, 'AUDIO')
) T ([Order], [TYPE])
) AS O
ON T.type = O.TYPE
)
SELECT
[SN]
, [TYPE]
, [VOLTAGE]
, [VOLTAGE] - LEAD([VOLTAGE]) OVER (PARTITION BY [SN] ORDER BY [Order]) AS [Diff]
FROM cte
Thanks to the great efforts by MS engineers to simplify syntax of DAX! Most beginners are SUCCESSFULLY MISLED to think that they could easily master DAX; but it turns out that the intricacy of the most frequently used RANKX() is still way beyond their comprehension! |
DAX is simple, but NOT EASY! |
Hi,
Please check the below picture and the attached pbix file.
It is for creating measures.
Voltage measure: =
IF ( HASONEVALUE ( Data[Serial No] ), SUM ( Data[Voltage] ) )
Row Diff measure: =
VAR _currentvoltage = [Voltage measure:]
VAR _currentrow =
MAX ( 'Test Type'[Index] )
VAR _nextrow =
MINX (
FILTER ( ALL ( 'Test Type' ), 'Test Type'[Index] > _currentrow ),
'Test Type'[Index]
)
VAR _nextrowvoltage =
CALCULATE (
[Voltage measure:],
FILTER ( ALL ( 'Test Type' ), 'Test Type'[Index] = _nextrow )
)
RETURN
IF (
HASONEVALUE ( 'Serial No'[Serial No] ),
IF ( ISBLANK ( _nextrow ), "null", _currentvoltage - _nextrowvoltage )
)
Thank you for your extensive help. I greatly appreciate it.
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