Forum Discussion
Data validity and syntax
Hello All, I am building a data quality dashboard. One column is of PAN number. I to check its validity, I need to apply 3 rules and finally calculate validity % based on that. The rules are:
1) First 5 uppercase alphabets followed by 4 numeric digits and ending with one uppercase alphabet
2) The fourth character should be from list ("P","C", "H", "F", "A", "T", "B", "L", "J", "G")
3) Same PAN can't be present across multiple clients/rows
Please help. How can I achieve all these 3 rules? In power query editor or DAX?
I tried to follow the specifications of the following link:
https://en.wikipedia.org/wiki/Permanent_account_number
Test if this function is right for you.
let checkPAN=(PAN as text) as logical => let charsPAN=Text.ToList(PAN), fourthChars=Text.ToList("ABCEFGHLJPT"), len=Text.Length(PAN)=10, upper=Text.Upper(PAN)=PAN, btwAAAZZZ="AAA"<=Text.Start(PAN,3) and Text.Start(PAN,3)<="ZZZ", fourthChar=List.Contains(fourthChars,charsPAN{3}), fifthChar="A" < charsPAN{4} and charsPAN{4} <"Z", digitsPAN="0000"<Text.Range(PAN,5,4) and Text.Range(PAN,5,4)<"9999", lastCharPAN="A" < charsPAN{9} and charsPAN{9} <"Z" in len and upper and btwAAAZZZ and fourthChar and digitsPAN and lastCharPAN in checkPANHi Anonymous ,
You could refer to the following DAX:
Column = VAR a = LEFT ( 'Table'[Column1], 5 ) VAR b1 = MID ( 'Table'[Column1], 1, 1 ) VAR b2 = MID ( 'Table'[Column1], 2, 1 ) VAR b3 = MID ( 'Table'[Column1], 3, 1 ) VAR b4 = MID ( 'Table'[Column1], 4, 1 ) VAR b5 = MID ( 'Table'[Column1], 5, 1 ) VAR b = ISERROR ( VALUE ( b1 ) ) && ISERROR ( VALUE ( b2 ) ) && ISERROR ( VALUE ( b3 ) ) && ISERROR ( VALUE ( b4 ) ) && ISERROR ( VALUE ( b5 ) ) VAR c = NOT ( ISERROR ( VALUE ( MID ( 'Table'[Column1], 6, 4 ) ) ) ) VAR d = EXACT ( UPPER ( RIGHT ( 'Table'[Column1], 1 ) ), RIGHT ( 'Table'[Column1], 1 ) ) VAR e = ISERROR ( VALUE ( RIGHT ( 'Table'[Column1], 1 ) ) ) VAR f = CALCULATE ( COUNTA ( 'Table'[Column1] ), ALLEXCEPT ( 'Table', 'Table'[Column1] ) ) = 1 VAR g = b4 IN { "P", "C", "H", "F", "A", "T", "B", "L", "J", "G" } RETURN IF ( EXACT ( UPPER ( a ), a ) && ISTEXT ( a ) && b && c && d && e && f && g, 1, 0 )
2 Replies
I tried to follow the specifications of the following link:
https://en.wikipedia.org/wiki/Permanent_account_number
Test if this function is right for you.
let checkPAN=(PAN as text) as logical => let charsPAN=Text.ToList(PAN), fourthChars=Text.ToList("ABCEFGHLJPT"), len=Text.Length(PAN)=10, upper=Text.Upper(PAN)=PAN, btwAAAZZZ="AAA"<=Text.Start(PAN,3) and Text.Start(PAN,3)<="ZZZ", fourthChar=List.Contains(fourthChars,charsPAN{3}), fifthChar="A" < charsPAN{4} and charsPAN{4} <"Z", digitsPAN="0000"<Text.Range(PAN,5,4) and Text.Range(PAN,5,4)<"9999", lastCharPAN="A" < charsPAN{9} and charsPAN{9} <"Z" in len and upper and btwAAAZZZ and fourthChar and digitsPAN and lastCharPAN in checkPANHi Anonymous ,
You could refer to the following DAX:
Column = VAR a = LEFT ( 'Table'[Column1], 5 ) VAR b1 = MID ( 'Table'[Column1], 1, 1 ) VAR b2 = MID ( 'Table'[Column1], 2, 1 ) VAR b3 = MID ( 'Table'[Column1], 3, 1 ) VAR b4 = MID ( 'Table'[Column1], 4, 1 ) VAR b5 = MID ( 'Table'[Column1], 5, 1 ) VAR b = ISERROR ( VALUE ( b1 ) ) && ISERROR ( VALUE ( b2 ) ) && ISERROR ( VALUE ( b3 ) ) && ISERROR ( VALUE ( b4 ) ) && ISERROR ( VALUE ( b5 ) ) VAR c = NOT ( ISERROR ( VALUE ( MID ( 'Table'[Column1], 6, 4 ) ) ) ) VAR d = EXACT ( UPPER ( RIGHT ( 'Table'[Column1], 1 ) ), RIGHT ( 'Table'[Column1], 1 ) ) VAR e = ISERROR ( VALUE ( RIGHT ( 'Table'[Column1], 1 ) ) ) VAR f = CALCULATE ( COUNTA ( 'Table'[Column1] ), ALLEXCEPT ( 'Table', 'Table'[Column1] ) ) = 1 VAR g = b4 IN { "P", "C", "H", "F", "A", "T", "B", "L", "J", "G" } RETURN IF ( EXACT ( UPPER ( a ), a ) && ISTEXT ( a ) && b && c && d && e && f && g, 1, 0 )