How to Convert Earlier function to M Query

[NilR]

Here is my Dax Calculated column, but I have a lot of data that slows down the process. How can I rewrite this to Mquery ?

Active_records_last_11_months = 
var _GP_NB = 'Table'[GP]
var _id = 'Table'[ID]
var _end_date = 'Table'[Start_Date]
var _start_date = EOMONTH(_end_date,-12)+1

VAR _COUNT = RANKX ( 
        FILTER (ALL('Table'),
            'Table'[GP] = EARLIER('Table'[GP])
            && 'Table'[ID] = EARLIER('Table'[ID])
            && 'Table'[DATEDIFF] = EARLIER('Table'[DATEDIFF])
            && 'Table'[Start_Date] >= _start_date
            && 'Table'[Start_Date] <= _end_date
        ),        
        'Table'[Start_Date],
        ,
        ASC,
        Dense
    )
 RETURN 
 
_COUNT

[lbendlin]

DAX is executed in memory. Power Query M code is executed on disk. It will most likely be slower.

EARLIER is no longer a preferred choice. Instead, use variables.

Please provide sample data (with sensitive information removed) that covers your issue or question completely, in a usable format (not as a screenshot). Leave out anything not related to the issue.
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Please show the expected outcome based on the sample data you provided.

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[NilR]

Thanks, Great info!! I ended up adding a sql statemnet to my data: DENSE_RANK() OVER (PARTITION BY ...)