Created
July 19, 2025 21:22
-
-
Save ninmonkey/1552343344cb5d99b995551b5fdbecb4 to your computer and use it in GitHub Desktop.
Merge multiple `Table.AddRows` and schema transforms into fewer steps
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| let | |
| startDate = DateTime.Date( DateTime.LocalNow() ), | |
| endingOffset = 1000, // in days | |
| endingOffsetDate = Date.AddDays( startDate, endingOffset ), | |
| allDays = List.Transform( | |
| { Number.From(startDate)..Number.From(endingOffsetDate) }, | |
| each { Date.From( _ ) } | |
| ), | |
| Source = #table( | |
| type table [ Date = date ], allDays ), | |
| addDimensions = Table.AddColumn( | |
| Source, "Dimensions", | |
| (row) => [ | |
| Year = Date.Year( row[Date] ), | |
| Month = Date.Month( row[Date] ), | |
| Quarter = Date.QuarterOfYear( row[Date] ), | |
| // reference: https://learn.microsoft.com/en-us/powerquery-m/custom-date-and-time-format-strings | |
| MonthPadded = Date.ToText( row[Date], [ | |
| Culture = "en-US", Format = "MM" ] ), | |
| // if you want "202407" | |
| YearMonth = Date.ToText( row[Date], [ | |
| Culture = "en-US", Format = "yyyyMM" ] ) | |
| ], | |
| rowSchema | |
| ), | |
| rowSchema = type [ | |
| Year = Int64.Type, | |
| Month = Int64.Type, | |
| Quarter = Int64.Type, | |
| MonthPadded = text, | |
| YearMonth = text | |
| ], | |
| all_column_names = {"Year", "Month", "Quarter", "MonthPadded", "YearMonth"}, // or dynamically get them using Record.FieldNames() | |
| #"Expanded Dimensions" = Table.ExpandRecordColumn( addDimensions, "Dimensions", all_column_names, all_column_names) | |
| in | |
| #"Expanded Dimensions" |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment