Conditionally Update Columns in Pivoted Data

[BiscuitKen]

Hi

I've pivoted data and now want to update the values that are null to STANDARD but only where 'WorkType' = SHIFT regardless of the dates in the column headers as these will change.

The data looks like this

Employee Number	WorkType	20/05/2024	21/05/2024	22/05/2024	23/05/2024	24/05/2024
00001	SHIFT	null	null	STANDARD	STANDARD	STANDARD
00002	SHIFT	null	null	STANDARD	STANDARD	STANDARD
00003	SHIFT	STANDARD	STANDARD	STANDARD	STANDARD	STANDARD
00004	STANDBY	null	null	null	null	null
00005	SHIFT	STANDARD	STANDARD	STANDARD	null	STANDARD
00006	SHIFT	STANDARD	STANDARD	STANDARD	STANDARD	STANDARD
00007	SHIFT	STANDARD	STANDARD	STANDARD	STANDARD	STANDARD
00008	SHIFT	null	null	STANDARD	STANDARD	STANDARD
00009	STANDBY	null	null	null	null	null
00010	SHIFT	STANDARD	STANDARD	STANDARD	STANDARD	STANDARD

I've added this line to the query;

= Table.ReplaceValue(#"Pivoted Column",null,"STANDARD",Replacer.ReplaceValue,Table.ColumnNames(#"Pivoted Column"))

This replaces all null values but I only want to update the rows that are SHIFT and leave the STANDBY row as null.

Any help would be appreciated.

[Anonymous]

Hi @BiscuitKen ,

How about replacing before pivot columns?

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("jZU7DoMwEETv4hop9hp/UhKhKGlSBJoIcf9rhCoKu4yZysJviqfRrlkWF1znpsfzPm+n+ItPF/HSbx9u7RQNTSp/dJqH1zi8R5uKVKpHKWnaStNWKFuhbIWyjcgWpwKVgvaRso+U/e/i9jlsW3HTt+JywuMJ7zVPVLuJajdR7SbUrqWw1UxZZ8o6U9YZWeMUtC+UfaHsC2VfKPtC2dfm61GRtaXQtlK2lbK9nuyf4sZYcbN/ipt5VtzsX/DUMOxjcBr2Mfwz8VTD+9hxxesX", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [#"Employee Number" = _t, WorkType = _t, Attribute = _t, Value = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Employee Number", Int64.Type}}),
    #"Replaced Value" = Table.ReplaceValue(#"Changed Type","",each if [WorkType] = "SHIFT" then "STANDARD" else null,Replacer.ReplaceValue,{"Value"}),
    #"Pivoted Column" = Table.Pivot(#"Replaced Value", List.Distinct(#"Replaced Value"[Attribute]), "Attribute", "Value")
in
    #"Pivoted Column"

Best Regards,
Gao
Community Support Team

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[BiscuitKen]

Hi @Anonymous 

Thank you for your solution but I'm afraid it's not suitable for my senario.  There are no null values to update prior to the pivot.  The null values appear after the pivot as a row may not contain a value for all columns whereas other row my contain a value.

[slorin · Accepted solution]

Hi @BiscuitKen 

= Table.ReplaceValue(#"Pivoted Column",null, each if [WorkType]="SHIFT" then "STANDARD" else null,Replacer.ReplaceValue,Table.ColumnNames(#"Pivoted Column"))

 Stéphane