[POWER QUERY] Additional column with summing all previous columns expect the first one

[jarekjd]

Hello Guys,

Pls help to adjust the code. Beginner struggles...

let
    Source = Csv.Document(Web.Contents("https://api.llama.fi/simpleChainDataset/Terra?"),[Delimiter=",", Columns=1160, Encoding=1252, QuoteStyle=QuoteStyle.None]),
    #"Transposed Table" = Table.Transpose(Source),
    #"Promoted Headers" = Table.PromoteHeaders(#"Transposed Table", [PromoteAllScalars=true]),
    #"Changed Type1" = Table.TransformColumnTypes(#"Promoted Headers",{{"Total", type number}, {"Terraswap", type number}, {"Protocol", type text}, {"Lido", type number}, {"Mirror", type number}, {"Anchor", type number}, {"Spectrum Protocol", type number}, {"LoTerra", type number}, {"Pylon Protocol", type number}, {"ApolloDAO", type number}, {"Nexus Protocol", type number}, {"Loop Finance", type number}, {"Starterra", type number}, {"Astroport", type number}, {"Stader", type number}}),
    #"Rows Total" = Table.AddColumn(Source, "Sum", each List.Sum(List.Range(Record.ToList(_),2,Table.ColumnCount(Source)-2)))
in
    #"Rows Total"

I'd like to do 2 things:
1) in #"Changed Type1" - dynamically provide type number to all column except the first one (this is date field)
- above code is referencing specific names but the number of columns is dynamic
2) in #"Rows Total" - add new column which is summing all columns except the first one (these are categories of data i dont need - just a sum of it)

As you can see before that i'm promoting headers from the first row so it should be taken into account.

Can you pls help? Appreciate a lot!

 

[RoryA]

I'd do #1 in two steps for simplicity:

    #"Changed Type" = Table.TransformColumnTypes(#"Promoted Headers",{{"Protocol", type text}}),
    #"Changed Type1" = Table.TransformColumnTypes(#"Changed Type", List.Transform(List.RemoveFirstN(Table.ColumnNames(#"Changed Type"), 1), each{_, type number})),

I'm not clear on #2 - isn't there already a Totals column?

 

[jarekjd]

I'm not clear on #2 - isn't there already a Totals column?

Yes, it's there but it's not working. It's showing error

 

[RoryA]

It’s working here - I mean the one in the source file, not the one you added.

 

[jarekjd]

I mean that this part of code

= Table.AddColumn(Source, "Sum", each List.Sum(List.Range(Record.ToList(_),2,Table.ColumnCount(Source)-2)))

is generating the following error:

Expression.Error: We cannot apply operator - to types Text and Text.
Details:
    Operator=-
    Left=14/11/2020
    Right=14/11/2020

I'm getting also strange output (headers are lost, table unpivoted) and last column "Sum" shows above error.

... next columns go on until 1160

Before above step the table looks as follows ( i have applied your changes which are working correctly)

 

[RoryA]

My point is that, as in your picture, there is already a Total column, so why are you trying to recreate it? Surely that will just double everything?

 

[jarekjd]

It's just input data from a website. It's actually not a full total of all the columns so I do need to sum up all of them

 

[RoryA]

Including that total column?

 

[jarekjd]

Including that total column?

Right, plz exclude this one too. It's calculated wrongly

 

[RoryA]

Change that line to:

    #"Rows Total" = Table.AddColumn(#"Changed Type1", "Sum", each List.Sum(List.Range(Record.ToList(_),2,Table.ColumnCount(#"Changed Type1")-2)))