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Replace null with 0
Hi ,
I want to replace Null value for all columns with zero in power BI Query.
For example,
Table.ReplaceValue(#"Pivoted Column",null,0,Replacer.ReplaceValue,{"X1 ", "X2", "X3"})
I do not want to write my column name like {"X1 ", "X2", "X3"}.
Is there any function in M for replacing all columns with one value ?
Thanks
Nicki
Hi Nicki,
you can use Table.TransformColumns function for your expected output.
let
// my test data
Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMlTSUQIiI6VYnWgQwxjEj40FAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type text) meta [Serialized.Text = true]) in type table [Column1 = _t, Column2 = _t, Column3 = _t]),
// get all column names as list
allColumnNames = Table.ColumnNames(Source),
// transform the column name list into a list of list, where every inner list contains column name and a function for replacing null value
allTranformations = List.Transform(allColumnNames, each {_, each if _ = null or _ = "" then 0 else _}),
// apply the transformations
tranformColumns = Table.TransformColumns(Source, allTranformations)
in
tranformColumns
4 Replies
Hi Nicki,
you can use Table.TransformColumns function for your expected output.
let
// my test data
Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMlTSUQIiI6VYnWgQwxjEj40FAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type text) meta [Serialized.Text = true]) in type table [Column1 = _t, Column2 = _t, Column3 = _t]),
// get all column names as list
allColumnNames = Table.ColumnNames(Source),
// transform the column name list into a list of list, where every inner list contains column name and a function for replacing null value
allTranformations = List.Transform(allColumnNames, each {_, each if _ = null or _ = "" then 0 else _}),
// apply the transformations
tranformColumns = Table.TransformColumns(Source, allTranformations)
in
tranformColumnsThank you. It works fine.
