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Question

i am trying to use a if formula in power query. For example, if the Column contains “guy” then value is male and the false value is “female”. I tried different ways and I can't find the right formula to use in power query. Can anyone help me please?

Answer 1

如果您将其输入到“ Add Custom Column ”对话框中，则类似于（不区分大小写）：

= if Text.Contains([Column],"guy", Comparer.OrdinalIgnoreCase) then "male" else "female"

Answer 2

It sounds like you are wanting to conditionally replace values in a column, based on the existing values in that column? If so, you can use the Table.ReplaceValue function in Power Query:

= Table.ReplaceValue(Source,
each [Gender],
each if [Gender] = "guy" then "male" else "female",
Replacer.ReplaceText,{"Gender"})

That will change all values of "guy" to "male', and ALL other values to "female", as you stated.

You can also leave values in place that don't meet the criteria, by simply referencing the column name instead of a specifying a new value:

= Table.ReplaceValue(Source,
each [Gender],
each if [Gender] = "guy" then "male" else [Gender],
Replacer.ReplaceText,{"Gender"})

Create a table with a column called Gender, and load it to power query. Right-click on the column header and choose Replace Values to get the UI to build your statement for you, then replace the generated code with the above modification(s) and apply to your actual requirements. The key is using the each expression to tell Power Query to test at the row value level. If you omit each , you'll see the error:

"Expression.Error: There is an unknown identifier. Did you use the [field] shorthand for a _[field] outside of an 'each' expression?"

Answer 3

= Table.AddColumn(#"Changed Type","ColumnName",each if[Column] ="""Guy""" then"""Male""" else"""Female""")