grab text and put it in another column

[Reuben]

Hi all,

I am trying to resolve the following problem in the query:

I have a basic dim product table composed of:

SKU: 5 digit code. The first 3 digit can be numeric or alphanumeric. The las two digit are the subdivision and are always numeric, starting from 01,02, 03... to 99

Description: Each 5 digit SKU has a different description.

SKU 3 Digit: Same as SKU excluding the subdivision number.

What I want to do is to grab the description of the last SKU number, and create another column displaying this description in every "SKU 3 digit".

As my english is quite bad, let me explain it with an example:

Thank you for your support

RB

[Jimmy801 · Accepted solution]

Hallo @Reuben 

add a new column with this formula (The variable PreviousStep you have to exchange with your last step name)

Table.Last(Table.SelectRows(PreviousStep, (row)=> Text.Start(row[SKU],3)=_[SKU 3 digit]))[Description]

Here a complete example

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMjU1NTBU0lFyBGIgWylWByJmBOQ7oYkZg9QhK3S0MDQwBfINDUAyFoZwQTOQIEwsFgA=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [SKU = _t, Description = _t, #"SKU 3 digit" = _t]),
    PreviousStep = Table.TransformColumnTypes(Source,{{"SKU", type text}, {"Description", type text}, {"SKU 3 digit", type text}}),
    #"Added Custom" = Table.AddColumn(PreviousStep, "Description new", each Table.Last(Table.SelectRows(PreviousStep, (row)=> Text.Start(row[SKU],3)=_[SKU 3 digit]))[Description])
in
    #"Added Custom"

Copy paste this code to the advanced editor in a new blank query to see how the solution works.

If this post helps or solves your problem, please mark it as solution (to help other users find useful content and to acknowledge the work of users that helped you)
Kudoes are nice too

Have fun

Jimmy

[Reuben]

awsome!! the evaluation time has been reduced from >10 min to 2 min. Thank you!!

[Reuben]

thank you guys for all your help.

I feel bad cause I cannot select all the answers as solution!

I have tried all the option and they work just perfect in the desktop.

But I have to explore why the same M code it doesn't work in the Service query (dataflow). I get a Timeout error when executing the last step. So I guess my table is too large and I have some kind of limitation.

thanks again for your time

[Anonymous]

Try this. I changed table max. with table.last (I suppose find last element of list instead of max could, almost shure, improve the performance).

the problem could be if your table is not well ordered, as I supposed. my solutione was more general.

How many rows your data set has?

let
    Origine = Tabella,
    #"Rimosse altre colonne" = Table.SelectColumns(Origine,{"SKU", "Description"}),
    #"Suddividi colonna in base alla posizione" = Table.SplitColumn(#"Rimosse altre colonne", "SKU", Splitter.SplitTextByPositions({0, 3}, false), {"SKU.1", "SKU.2"}),
    #"Raggruppate righe" = Table.Group(#"Suddividi colonna in base alla posizione", {"SKU.1"}, {{"descold", each _[Description] },{"descnew", each List.Last(_[Description]) } }),
    #"Tabella descold espansa" = Table.ExpandListColumn(#"Raggruppate righe", "descold")
in
    #"Tabella descold espansa"

[Jimmy801 · Accepted solution]

Hello @Reuben 

you can try this code... maybe it has some better performance

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMjU1NTBU0lFyBGIgWylWByJmBOQ7oYkZg9QhK3S0MDQwBfINDUAyFoZwQTOQIEwsFgA=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [SKU = _t, Description = _t, #"SKU 3 digit" = _t]),
    PreviousStep = Table.Buffer(Table.TransformColumnTypes(Source,{{"SKU", type text}, {"Description", type text}, {"SKU 3 digit", type text}})),
    #"Added Custom" = Table.AddColumn(PreviousStep, "Description new", each Table.Last(Table.SelectRows(PreviousStep, (row)=> Text.Start(row[SKU],3)=_[SKU 3 digit]))[Description])
in
    #"Added Custom"

Copy paste this code to the advanced editor in a new blank query to see how the solution works.

If this post helps or solves your problem, please mark it as solution (to help other users find useful content and to acknowledge the work of users that helped you)
Kudoes are nice too

Have fun

Jimmy

[Jimmy801 · Accepted solution]

Hallo @Reuben 

add a new column with this formula (The variable PreviousStep you have to exchange with your last step name)

Table.Last(Table.SelectRows(PreviousStep, (row)=> Text.Start(row[SKU],3)=_[SKU 3 digit]))[Description]

Here a complete example

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMjU1NTBU0lFyBGIgWylWByJmBOQ7oYkZg9QhK3S0MDQwBfINDUAyFoZwQTOQIEwsFgA=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [SKU = _t, Description = _t, #"SKU 3 digit" = _t]),
    PreviousStep = Table.TransformColumnTypes(Source,{{"SKU", type text}, {"Description", type text}, {"SKU 3 digit", type text}}),
    #"Added Custom" = Table.AddColumn(PreviousStep, "Description new", each Table.Last(Table.SelectRows(PreviousStep, (row)=> Text.Start(row[SKU],3)=_[SKU 3 digit]))[Description])
in
    #"Added Custom"

Copy paste this code to the advanced editor in a new blank query to see how the solution works.

If this post helps or solves your problem, please mark it as solution (to help other users find useful content and to acknowledge the work of users that helped you)
Kudoes are nice too

Have fun

Jimmy

[Anonymous]

let
    Origine = Tabella,
    #"Rimosse altre colonne" = Table.SelectColumns(Origine,{"SKU", "Description"}),
    #"Suddividi colonna in base alla posizione" = Table.SplitColumn(#"Rimosse altre colonne", "SKU", Splitter.SplitTextByPositions({0, 3}, false), {"SKU.1", "SKU.2"}),
    #"Raggruppate righe" = Table.Group(#"Suddividi colonna in base alla posizione", {"SKU.1"}, {{"descold", each _[Description] },{"descnew", each List.Max(_[Description]) } }),
    #"Tabella descold espansa" = Table.ExpandListColumn(#"Raggruppate righe", "descold")
in
    #"Tabella descold espansa"

[v-alq-msft]

Hi, @Reuben 

Based on your description, I created data to reproduce your scenario. The pbix file is attached in the end.

Table:

You may create a new custom column with the following m codes.

let 
x=[SKU 3 digit],
newtab=Table.AddColumn(#"Added Custom","SKU last 2 digit",each Number.From( Text.End([SKU],2))),
tab=Table.SelectRows(newtab,each [SKU 3 digit]=x),
val=Table.Max(tab,"SKU last 2 digit")[Description]
in 
val

Result:

Best Regards

Allan

If this post helps,then consider Accepting it as the solution to help other members find it faster.

[CNENFRNL]

Hi, @Reuben , you might want to try this solution in PQ; in addition, Excel formula, our oldie but goodie, can solve it with ease. I attach an Excel file for your further reference.

Excel FormulaPQ