Forum Discussion

k1s2's avatar
k1s2
Icon for Helper I rankHelper I
2 years ago
Solved

Error converting data type to date but not if converting data type to datetime first

I have data in a column detected as text like this 18/05/2021 15:15:33    If I try to transform it to date, PowerBI throws an error 'couldn't parse the input as a Date value'   If I try to transf...
Need Help
  • AlienSx's avatar
    AlienSx
    2 years ago
    let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMrTQNzDVNzIwMlQwNLUCImNjpdhYAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [data = _t]),
    to_date = Table.TransformColumns(Source, {"data", each Date.From(DateTime.From(_, "de-DE"))})
in
    to_date
k1s2's avatar
k1s2
Icon for Helper I rankHelper I
2 years ago

I don't know what you mean.  Would you mind showing me a complete example starting with what I 've got in the formula bar 

  • AlienSx's avatar
    AlienSx
    Icon for Super User rankSuper User
    2 years ago
    let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMrTQNzDVNzIwMlQwNLUCImNjpdhYAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [data = _t]),
    to_date = Table.TransformColumns(Source, {"data", each Date.From(DateTime.From(_, "de-DE"))})
in
    to_date
    • k1s2's avatar
      k1s2
      Icon for Helper I rankHelper I
      2 years ago

      Thanks,

      So the line for converting multiple columns to UK date format in one step would be something like:

       

      = Table.TransformcolumnTypes(Source,{{"This Date", each Date.From(DateTime.From(_, "en-GB"))},{"That Date", each Date.From(DateTime.From(_, "en-GB"))}})

       

      • AlienSx's avatar
        AlienSx
        Icon for Super User rankSuper User
        2 years ago

        No. Don't use Table.TransformColumnTypes. Use this 

            = Table.TransformColumns(
        Source,
        {{"This Date", each Date.From(DateTime.From(_, "en-GB")), type date},
        {"That Date", each Date.From(DateTime.From(_, "en-GB")), type date}}
    )