Does deleting fields in the data model view affect the original data source?

[Account123]

I'm using directquery mode, from my understanding PowerBI isnt going to send a drop command to the DB but simply removes that field from the select query, is that correct?

[v-ljerr-msft]

Hi @Account123,

@Phil_Seamark is right. As the question is answered, could you accept @Phil_Seamark's reply as solution to close this thread? 

Regards

[Phil_Seamark · Accepted solution]

Hi @Account123

That is correct.  Power BI can't update, or delete your source data, so when you remove a column in the Query Editor or in Power BI it's just for Power BI. 🙂

[ollieT]

As a result will the data in that column stops synchronizing, hence saving space?