Substract columns with different data type and create a new column

Hi, Pranay08

May I ask if this is the expected output you are looking for? Based on your description, I'm not sure which effect you want, the following diagram implements both effects.

 

Effect 1:

Effect 2:

Advanced Editor:

let

    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("fc9LCsAgDEXRrYhjQV+M/WTmAgqdi/vfRikUEgU7vOQMXlrzQMQeKVF2p6BISq5ePngTPQwMkKLO1gxpgLSEWVgda0yM7T5e7tuElB1/b2B4Ywm/y/26rDExssxE7w8=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [#"Date Time" = _t, #"Flight Time" = _t]),

    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Date Time", type datetime}, {"Flight Time", type time}}),

    #"Split Column by Delimiter" = Table.SplitColumn(Table.TransformColumnTypes(#"Changed Type", {{"Date Time", type text}}, "en-US"), "Date Time", Splitter.SplitTextByEachDelimiter({" "}, QuoteStyle.Csv, false), {"Date Time.1", "Date Time.2"}),

    #"Changed Type1" = Table.TransformColumnTypes(#"Split Column by Delimiter",{{"Date Time.1", type date}, {"Date Time.2", type time}}),

    #"Added Custom" = Table.AddColumn(#"Changed Type1", "Custom", each [Flight Time]-[Date Time.2]),

    #"Added Custom1" = Table.AddColumn(#"Added Custom", "Custom.1", each DateTime.From([Date Time.1]) - Duration.From([Custom]))

in

    #"Added Custom1"

If this does not work, could you please share some sample data without sensitive information and expected output.
How to provide sample data in the Power BI Forum - Microsoft Fabric Community

Best Regards,
Yang
Community Support Team

 

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If I misunderstand your needs or you still have problems on it, please feel free to let us know. Thanks a lot!

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