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Patrykrz's avatar
Patrykrz
Frequent Visitor
3 years ago
Solved

Issue with date extract from text string- Power Query, Power BI

Hello,   I am running a report where columns contain lots of various data- text and numeric. From these text fields I would like to extract the date which is always written as "yyyy-MM-dd". There i...
Need Help
  • BA_Pete's avatar
    BA_Pete
    3 years ago

    Hi Patrykrz ,

     

    Try the following code to get this output:

     

     

     

    let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("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", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Column1 = _t]),

// Relevant steps ---->
    addDateCode =
        Table.AddColumn(
            Source,
            "dateCode",
            each List.Select(
                Text.SplitAny(
                    Text.Replace([Column1], "-", "0"),
                    Text.Remove([Column1],{"0".."9"})
                ),
                each Text.Length(_) = 10 and Text.StartsWith(_, "20")
            ){0}
        ),
    addDate =
        Table.AddColumn(
            addDateCode,
            "date",
            each Date.From(
                Text.Combine(
                    {
                        Text.End([dateCode], 2),
                        Text.Range([dateCode], 5, 2),
                        Text.Start([dateCode], 4)
                    },
                    "-"
                )
            )
        )
        
in
    addDate

     

    Pete

BA_Pete's avatar
BA_Pete
Super User
3 years ago

 

The full code is just an example so you can see the steps taken in a standalone query.

To implement in your query, just add two new custom columns:

 

First column - call this 'dateCode'.

You will need to change [Column1] references to match whatever the name of your text column is:

 

List.Select(
    Text.SplitAny(
        Text.Replace([Column1], "-", "0"),
        Text.Remove([Column1], {"0".."9"})
    ),
    each Text.Length(_) = 10 and Text.StartsWith(_, "20")
){0}

 

 

Second column:

 

Date.From(
    Text.Combine(
        {
            Text.End([dateCode], 2),
            Text.Range([dateCode], 5, 2),
            Text.Start([dateCode], 4)
        },
        "-"
    )
)

 

 

Pete

Patrykrz's avatar
Patrykrz
Frequent Visitor
3 years ago

Thank you Pete and thank you all! 🙂 you saved my day