Power Query - IF function related to a table (Parameters??)

[Anonymous]

Hello everyone, 

I´ve been working around but i don´t have enought M knowledge. 

I want to categorize some of my products depending on which text they contains. Until here i am doing that with the conditional feature of PowerQuery (same as If). But at the end it works as a table of two columns where if you find A  give me B. 

My question es , can i do that with Power query and one table in Excel? It would be really helpful because if i can do that i can give the hability of categorization to my end user. 

Thank you in advance!! 

[MarcelBeug · Accepted solution]

If I interpret your information correctly, you want to use a lookup table.

After Table1 and table Categories are loaded in Power Query (connection only), the following query adds a column to table Table1 with the category from table Categories:

let
    Source = Table1,
    #"Added Custom" = Table.AddColumn(Source, "Category", (x) => Text.Combine(Table.SelectRows(Categories, each Text.Contains(x[SomeText],[TextPart],Comparer.OrdinalIgnoreCase))[Category],", "))
in
    #"Added Custom"

The texts are compared case-insensitive; in case a text contains multiple TextParts, it will get all associated categories,

Examples:

No Category found for Sean.

[MarcelBeug · Accepted solution]

If I interpret your information correctly, you want to use a lookup table.

After Table1 and table Categories are loaded in Power Query (connection only), the following query adds a column to table Table1 with the category from table Categories:

let
    Source = Table1,
    #"Added Custom" = Table.AddColumn(Source, "Category", (x) => Text.Combine(Table.SelectRows(Categories, each Text.Contains(x[SomeText],[TextPart],Comparer.OrdinalIgnoreCase))[Category],", "))
in
    #"Added Custom"

The texts are compared case-insensitive; in case a text contains multiple TextParts, it will get all associated categories,

Examples:

No Category found for Sean.

[Anonymous]

Hello MarcelBeug,

Everything works perfect, it helps me to avoid a lot of manual stuff... 

I have one more question about it. I want to avoid the ones which the categorization is duplicated. I have several Key_Words for each category and sometimes they have more than one. 

I.e: Neobaron is categorized as Visitor, Visitor. is there any way to avoid that? For the ones that the categorization is different is fine, but i want to avoid the ones those are duplicated. .

Again thank you, 

[MarcelBeug · Accepted solution]

You can extend the formula with List.Distinct.

let
    Source = Table1,
    #"Added Custom" = Table.AddColumn(Source, "Category", (x) => Text.Combine(List.Distinct(Table.SelectRows(Categories, each Text.Contains(x[SomeText],[TextPart],Comparer.OrdinalIgnoreCase))[Category]),", "))
in
    #"Added Custom"

Remark: the close parenthesis for List.Distinct is behind "[Category]"

[Anonymous]

You are genius!!!! 
And your remark was great too 

[Anonymous]

Thank you very much!! It is perfect, i will try to modify your code to add it directly to table one. And your coderis better because i am getting more categories than one. I bought M is for Data Monkey. do you know where i could learn more about M? Thank you in advance!