Forum Discussion
Change columns name
Hi,
When I try to get data through power query (from google sheets or excel file)
I get it by columns - and then ther is automatically change type activated (for example column with title "1")
#"Changed Type" = Table.TransformColumnTypes(#"Promoted Headers",{{" 1 ", type any},....
If later I will change my name column in data file to another title then "1" it will break the connection.
So how can I figure this problem?
Thanks !
Remove the #"Changed Type" step.
If you still need to type your data, then there are various ways to do it dynamically, depending on your specific situation and requirements.
5 Replies
Remove the #"Changed Type" step.
If you still need to type your data, then there are various ways to do it dynamically, depending on your specific situation and requirements.
Thanks,
if you still need to type your data, then there are various ways to do it dynamically, depending on your specific situation and requirements.
Can you tell me how or refer to specific link to learn about it?
A typical example is to create a list with column names and the required types (this is actually a list of lists) and use that as second argument to function Table.TransformColumnTypes.
In this example, Table1 has 3 columns with a whole number, text and date. The query will still run if column names are adjusted.
let Source = Excel.CurrentWorkbook(){[Name="Table1"]}[Content], ColumnNames = Table.ColumnNames(Source), ColumnTypes = {Int64.Type, type text, type date}, TransformSpecs = List.Zip({ColumnNames,ColumnTypes}), #"Changed Type" = Table.TransformColumnTypes(Source,TransformSpecs) in #"Changed Type"In the "hard coded" version you can also recognize the list of lists as second argument:
let Source = Excel.CurrentWorkbook(){[Name="Table1"]}[Content], #"Changed Type" = Table.TransformColumnTypes(Source,{{"ID", Int64.Type}, {"Text", type text}, {"Date", type date}}) in #"Changed Type"
