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LesG01stn's avatar
LesG01stn
Frequent Visitor
4 years ago
Solved

Lookup values between two tables

I have 2 tables. The first table called OrderHeader has a field called ErrorDescription which has very verbose strings. The second table called ErrorLookup has a field called LookFor and a second fie...
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  • v-kkf-msft's avatar
    v-kkf-msft
    4 years ago

    Hi LesG01stn ,

     

    If the '*' character is not removed, it will look for the text "*API failed*" instead of "API failed". 

    I found a wrong column name in the code, please try the following code, it should return the correct value.

     

    let
Source = Excel.Workbook(File.Contents("C:\Users\lesgo\OneDrive - CCBAGROUP\OrderHeader.xlsx"), null, true),
Table1_Table = Source{[Item="Table1",Kind="Table"]}[Data],
#"Changed Type" = Table.TransformColumnTypes(Table1_Table,{{"(Do Not Modify) Order", type text}, {"(Do Not Modify) Row Checksum", type text}, {"(Do Not Modify) Modified On", type datetime}, {"Account Number (Customer) (Account)", Int64.Type}, {"Customer", type text}, {"Order Category", type text}, {"Sales Order Number", Int64.Type}, {"Source Channel", type text}, {"Created On", type datetime}, {"Requested Delivery Date", type datetime}, {"Planned Delivery Date", type date}, {"Total Amount", type number}, {"Order Quantity (Cases)", Int64.Type}, {"Created By", type text}, {"Status", type text}, {"Status Reason", type text}, {"Submission Status", type text}, {"Validation Outcome", type text}, {"Error Description", type text}, {"Integration Error", type text}, {"Delivery Location", type text}, {"Operational Site", type text}, {"Full Name (Account Manager) (Worker)", type text}, {"Sales Office (Customer) (Account)", type text}}),
#"Removed Columns" = Table.RemoveColumns(#"Changed Type",{"(Do Not Modify) Order", "(Do Not Modify) Row Checksum", "(Do Not Modify) Modified On"}),
varErrorMap = Table.Buffer ( ErrorLookUp ),
varLookFor = List.Buffer ( List.Transform ( varErrorMap[LookFor], each Text.Lower ( Text.Replace ( _, "*", "") ) ) ),
AddList = Table.AddColumn(#"Removed Columns", "Fault" as text, (t) => let
i = List.PositionOf ( varLookFor, List.First ( List.Select ( varLookFor, each Text.Contains ( Text.Lower ( t[Error Description] ), _ ) ) ) )
in try varErrorMap[FaultType]{i} otherwise null
)

in
AddList

     

    If the problem is still not resolved, please provide detailed error information or the expected result you expect. Let me know immediately, looking forward to your reply.
    Best Regards,
    Winniz
    If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

jennratten's avatar
jennratten
Super User
4 years ago

Hello - I was able to do it like this:

 

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("HcyxDgIhEEXRX3mhNmZjYWG7xsTCWGiHFMiOMhGYDczq74vWJ/daaw63ZRg22zPGShMrxkjhhQvVNwfC6FPCw3OiaYdrJMhM1StLQfQNypkmyKLGraw5cWtcnvAIUtQHxXH/hx5WArcuc5V7oowPa4SUPqzI8lOl3NbGuS8=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [ErrorDescription = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"ErrorDescription", type text}}),
    varErrorMap = Table.Buffer ( LookFor ),
    varLookFor = List.Buffer ( List.Transform ( varErrorMap[LookFor], each Text.Lower ( Text.Replace ( _, "*", "") ) ) ),
    AddList = Table.AddColumn ( #"Changed Type", "Fault", (t) => 
        let 
            i = List.PositionOf ( varLookFor, List.First ( List.Select ( varLookFor, each Text.Contains ( Text.Lower ( t[ErrorDescription] ), _ ) ) ) )
        in varErrorMap[FaultType]{i}, type text
        )

in
    AddList

 

 

 

  • LesG01stn's avatar
    LesG01stn
    Frequent Visitor
    4 years ago

    I went into the form, selected Modelling > Write DAX expression that creates a new column and pasted your code

    let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("HcyxDgIhEEXRX3mhNmZjYWG7xsTCWGiHFMiOMhGYDczq74vWJ/daaw63ZRg22zPGShMrxkjhhQvVNwfC6FPCw3OiaYdrJMhM1StLQfQNypkmyKLGraw5cWtcnvAIUtQHxXH/hx5WArcuc5V7oowPa4SUPqzI8lOl3NbGuS8=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [ErrorDescription = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"ErrorDescription", type text}}),
    varErrorMap = Table.Buffer ( LookFor ),
    varLookFor = List.Buffer ( List.Transform ( varErrorMap[LookFor], each Text.Lower ( Text.Replace ( _, "*", "") ) ) ),
    AddList = Table.AddColumn ( #"Changed Type", "Fault", (t) => 
        let 
            i = List.PositionOf ( varLookFor, List.First ( List.Select ( varLookFor, each Text.Contains ( Text.Lower ( t[ErrorDescription] ), _ ) ) ) )
        in varErrorMap[FaultType]{i}, type text
        )

in
    AddList

    but I get the following error

     

    • jennratten's avatar
      jennratten
      Super User
      4 years ago

      Hi - you will need to add this in Power Query, not DAX.  Can you please go to the Power Query editor, go to the OrderHeader table then click Advanced Editor on the ribbon, take a screen snip of what you see and post it here?  If it is long I only need the last couple of lines.  Then I can let you know exactly how to integrate this solution with your script.