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NavaneethArra
Regular Visitor

how to get Max Date for each month in power query editor

I have a list of dates for each month 

for example 
Date                     Value 
01/Jan/2023          15
12/Jan/2023           25
25/Jan/2023           37
01/Feb/2023          48
15/Feb/2023          51
28/Feb/2023          57 
06/Mar/2023          64
10/Mar/2023          68
31/Mar/2023          74
01/Apr/2023           83
18/Apr/2023           90
26/Apr/2023           87 
07/May/2023          87
24/May/2023          104


I wanted to have a table with only Max date for each particular month  in power query editor


1 ACCEPTED SOLUTION
Ahmedx
Super User
Super User

pls try this

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("Xc29CoUwDIbhe8ksNEl/HV0cBK+gOCi4ipzNu7cYe0hdH/LmyxmQzLQehpEtdEAeli4DsUYWZK/RxgdLPu5bRZck9xo9SZ4afPNg5vVXMTjJsUH5aUljdHV9OP+YrORJY4+yHprLdz2Wn9cH2WkkLEvLDQ==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Date = _t, Value = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Date", type date}, {"Value", Int64.Type}}),
    #"Added Custom" = Table.AddColumn(#"Changed Type", "Year-Month", each Date.EndOfMonth([Date])),
    #"Grouped Rows" = Table.Group(#"Added Custom", {"Year-Month"}, {{"Count", (x)=> Table.FromRecords({ Table.Max(x,"Date")})}}),
    #"Removed Other Columns" = Table.SelectColumns(#"Grouped Rows",{"Count"}),
    #"Expanded Count" = Table.ExpandTableColumn(#"Removed Other Columns", "Count", {"Date", "Value"}, {"Date", "Value"})
in
    #"Expanded Count"

View solution in original post

1 REPLY 1
Ahmedx
Super User
Super User

pls try this

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("Xc29CoUwDIbhe8ksNEl/HV0cBK+gOCi4ipzNu7cYe0hdH/LmyxmQzLQehpEtdEAeli4DsUYWZK/RxgdLPu5bRZck9xo9SZ4afPNg5vVXMTjJsUH5aUljdHV9OP+YrORJY4+yHprLdz2Wn9cH2WkkLEvLDQ==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Date = _t, Value = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Date", type date}, {"Value", Int64.Type}}),
    #"Added Custom" = Table.AddColumn(#"Changed Type", "Year-Month", each Date.EndOfMonth([Date])),
    #"Grouped Rows" = Table.Group(#"Added Custom", {"Year-Month"}, {{"Count", (x)=> Table.FromRecords({ Table.Max(x,"Date")})}}),
    #"Removed Other Columns" = Table.SelectColumns(#"Grouped Rows",{"Count"}),
    #"Expanded Count" = Table.ExpandTableColumn(#"Removed Other Columns", "Count", {"Date", "Value"}, {"Date", "Value"})
in
    #"Expanded Count"

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