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severm's avatar
severm
Frequent Visitor
4 years ago
Solved

Find dates in text

Dear all,   I kindly request the help of this community. I am a beginner and I am still getting acustom with Language M and DAX.   In the file I have I need to extract the maximum dates from a te...
Need Help
  • Vijay_A_Verma's avatar
    Vijay_A_Verma
    4 years ago

    Use this in a custom column

    = List.Max(List.Transform(List.Transform(Text.Split(Text.Replace(Text.Replace(Text.Replace(Text.Replace([Data],".","/"),".","/"),"*","/"),"-"," ")," "),(x)=>Text.Select(x,{"0".."9","/"})),(y)=>if Text.Contains(y,"/") then try Date.From(y) otherwise null else null))

    Full code for testing

    let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("hY/BbsMgEER/ZZVTGzUxBhts5VOsHMCwCQRjN+A2/vsSN1XV9tDjzL4Z7XTd5lX1UZuq7jWQck/4nhJKYQcsi/ouGPQRBzM6prXZHF+6jXc4ovKHCDVoqeWPIG2/ct5MowugFc4WBbSkaQPgo2KcHBqLFQJhO1I9MhQmG6K2s8qXK67o5MK7Bi+jZDJ/CqUoyqYoW7gMaEd04WpPquYr28uIEQ2r8JTO6Qq02RK6XUdEfdLnxAWPn60+zFy4YOf70pLuaQW3rNS8cKEu/rBSQ3Dnt1RzsajgM1iUtFjflEOcpY2Ki6YlK/okQ4J0S8/ASMGLzGRngWSy9Wvyf4u/q9q/TccP", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Data = _t]),
    #"Added Custom" = Table.AddColumn(Source, "Custom", each List.Max(List.Transform(List.Transform(Text.Split(Text.Replace(Text.Replace(Text.Replace(Text.Replace([Data],".","/"),".","/"),"*","/"),"-"," ")," "),(x)=>Text.Select(x,{"0".."9","/"})),(y)=>if Text.Contains(y,"/") then try Date.From(y) otherwise null else null)))
in
    #"Added Custom"

tackytechtom's avatar
tackytechtom
Most Valuable Professional
4 years ago

Hi severm ,

 

Here a potential solution. You can merge some of the steps. But it might help you anyway or at least gets you closer to a soluition:

 

Before:

 

 

After:

 

Here the code in Power Query M that you can paste into the advanced editor (if you do not know, how to exactly do this, please check out this quick walkthrough)

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("ZY3BDYAwDANXiXhWtHFcKGUWxBY8GJ+CQJTy9PkSL0u37ZvAAlIgSPESSxjPEKV03dpfTq28RiUIosdwF6xPxSZFVps/kNmBrp05142BQwPVqL+/EZr0YesB", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Column1 = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Column1", type text}}),
    #"Replaced Value" = Table.ReplaceValue(#"Changed Type",".","/",Replacer.ReplaceText,{"Column1"}),
    #"Replaced Value1" = Table.ReplaceValue(#"Replaced Value","txt","",Replacer.ReplaceText,{"Column1"}),
    #"Replaced Value2" = Table.ReplaceValue(#"Replaced Value1","*","/",Replacer.ReplaceText,{"Column1"}),
    #"Replaced Value3" = Table.ReplaceValue(#"Replaced Value2"," ","",Replacer.ReplaceText,{"Column1"}),
    #"Split Column by Delimiter" = Table.SplitColumn(#"Replaced Value3", "Column1", Splitter.SplitTextByDelimiter("-", QuoteStyle.Csv), {"Column1.1", "Column1.2"}),
    #"Added Custom" = Table.AddColumn(#"Split Column by Delimiter", "Custom", each if [Column1.2] <> null then [Column1.2] else [Column1.1]),
    #"Changed Type1" = Table.TransformColumnTypes(#"Added Custom",{{"Custom", type date}})
in
    #"Changed Type1"

 

Let me know if this helps or if you get stuck somewhere 🙂

 

/Tom
https://www.tackytech.blog/
https://www.instagram.com/tackytechtom/

  • severm's avatar
    severm
    Frequent Visitor
    4 years ago

    Hey Tom,

     

    I very much appreciate your answer. As always, the real life is more complex :). txt in my description are full senteces or abreviation, shorter or longer, sometimes txt includes also numbers. 

    qbcsde45cd 01.06.2022 - 31.05.2023 csfmeoj3dde
    ljfofbl;s 5 dada 01.06.2022 -31.05.2023lepojn dbfuif7 9089n fe
    lopjfeif4f 03-04.05.2022 pinsdiubf4frf
    pjnwd lasa3asde 17/18/19 kmfiofjnrigb56
    casfsfe34fgthtr 28*02*2023 sdgdht676s
    plnu67jniu 31.12.24 xniubuy67bkl;
    mnjhvt567ybnl 31/12/2022 amsuaisb67890
    (ant txt) 30/6/22 (any text)

     

    This why I proposed some steps in my post. If you could help put me on a new direction I would be grateful.
    Thank you!