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Convert null dates to all dates existing into table
Hi guys,
I have a table that contains User and Date columns for example, and the dates can be null because I am doing a left join for users table.
I would like that when the user doesn't have a date, replace null for all existing values from another user.
How do I do this? is it in power query or dax?
Original table
| User | Date |
| A | 01/01/2021 |
| A | 02/01/2021 |
| C | 03/01/2021 |
| B | null |
Expected table
| User | Date |
| A | 01/01/2021 |
| A | 02/01/2021 |
| C | 03/01/2021 |
| B | 01/01/2021 |
| B | 02/01/2021 |
| B | 03/01/2021 |
Try this in a new table:
New Table = VAR _Dates = DISTINCT ( OriginalTable[Date] ) VAR _BlankVal = CALCULATETABLE ( VALUES ( OriginalTable[User] ), FILTER ( OriginalTable, ISBLANK ( OriginalTable[Date] ) ) ) VAR _AssignDates = FILTER ( CROSSJOIN ( _BlankVal, _Dates ), NOT ( ISBLANK ( [Date] ) ) ) VAR _OrigOK = FILTER ( OriginalTable, NOT ( ISBLANK ( OriginalTable[Date] ) ) ) RETURN UNION ( _OrigOK, _AssignDates )Or this in Power Query (you will need to use your source table code for Source and Source1 lines)
let Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WclTSUTIw1AciIwMjQ6VYHaiQEYqQM0jIGEXICSikFBsLAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [User = _t, Date = _t]), #"Changed Type" = Table.TransformColumnTypes(Source,{{"User", type text}, {"Date", type date}}), #"GoodRows" = Table.SelectRows(#"Changed Type", each ([Date] <> null)), Source1 = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WclTSUTIw1AciIwMjQ6VYHaiQEYqQM0jIGEXICSikFBsLAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [User = _t, Date = _t]), #"Changed Type1" = Table.TransformColumnTypes(Source1,{{"User", type text}, {"Date", type date}}), #"Filtered Rows" = Table.SelectRows(#"Changed Type1", each ([Date] = null)), #"Removed Columns" = Table.RemoveColumns(#"Filtered Rows",{"Date"}), #"Added Custom" = Table.AddColumn(#"Removed Columns", "Custom", each #"GoodRows"), #"Expanded Custom" = Table.ExpandTableColumn(#"Added Custom", "Custom", {"Date"}, {"Custom.Date"}), #"Renamed Columns" = Table.RenameColumns(#"Expanded Custom",{{"Custom.Date", "Date"}}), #"Appended Query" = Table.Combine({#"GoodRows", #"Renamed Columns"}), #"Changed Type2" = Table.TransformColumnTypes(#"Appended Query",{{"Date", type date}}) in #"Changed Type2"
2 Replies
Try this in a new table:
New Table = VAR _Dates = DISTINCT ( OriginalTable[Date] ) VAR _BlankVal = CALCULATETABLE ( VALUES ( OriginalTable[User] ), FILTER ( OriginalTable, ISBLANK ( OriginalTable[Date] ) ) ) VAR _AssignDates = FILTER ( CROSSJOIN ( _BlankVal, _Dates ), NOT ( ISBLANK ( [Date] ) ) ) VAR _OrigOK = FILTER ( OriginalTable, NOT ( ISBLANK ( OriginalTable[Date] ) ) ) RETURN UNION ( _OrigOK, _AssignDates )Or this in Power Query (you will need to use your source table code for Source and Source1 lines)
let Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WclTSUTIw1AciIwMjQ6VYHaiQEYqQM0jIGEXICSikFBsLAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [User = _t, Date = _t]), #"Changed Type" = Table.TransformColumnTypes(Source,{{"User", type text}, {"Date", type date}}), #"GoodRows" = Table.SelectRows(#"Changed Type", each ([Date] <> null)), Source1 = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WclTSUTIw1AciIwMjQ6VYHaiQEYqQM0jIGEXICSikFBsLAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [User = _t, Date = _t]), #"Changed Type1" = Table.TransformColumnTypes(Source1,{{"User", type text}, {"Date", type date}}), #"Filtered Rows" = Table.SelectRows(#"Changed Type1", each ([Date] = null)), #"Removed Columns" = Table.RemoveColumns(#"Filtered Rows",{"Date"}), #"Added Custom" = Table.AddColumn(#"Removed Columns", "Custom", each #"GoodRows"), #"Expanded Custom" = Table.ExpandTableColumn(#"Added Custom", "Custom", {"Date"}, {"Custom.Date"}), #"Renamed Columns" = Table.RenameColumns(#"Expanded Custom",{{"Custom.Date", "Date"}}), #"Appended Query" = Table.Combine({#"GoodRows", #"Renamed Columns"}), #"Changed Type2" = Table.TransformColumnTypes(#"Appended Query",{{"Date", type date}}) in #"Changed Type2"First of all, thank you for your answer..
I used the power query version (a little bit slow to refresh the data because I have data for all days, like 365 lines by user) , I just removed the duplicated values and perfect result.
