Get certified for free when you join Fabric Data Days 2026 and dive into Fabric, Power BI, SQL, AI, and other essential data skills.
Join nowTry your skills in the Power BI Dataviz World Championship! Round one ends June 26. Join now
Hi guys,
i have a SQL query i added in Power Query. Now i am adding additional custom columns to transfor some columns coming from the query. But often times when i create additional columns Power Query takes long time to apply changes. These are also often simple transformation e.g. transform a date to only the year of the date.
Now my question is: Is Power Query querying the database everytime i create a custom column that refers to a column from the query? In general when does Power Query query the databases?
I assume that because in the lower right corner i see this notice: "Waiting for host:" and then the name of the database. So it looks like Power Query always queries the database.
This is super annoying. How can i work around this?
Thx guys
Hi @Anonymous
You could check the following to improve performance of power query.
Table.Buffer for cashing intermediate query results or how workaround Unnecessary Queries Issue
Best Regards
Maggie
Community Support Team _ Maggie Li
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
Don't miss out on Data Days, June 15 through August 7. Learn Fabric, Power BI, SQL, AI and more.
Check out the May 2026 Power BI update to learn about new features.
| User | Count |
|---|---|
| 11 | |
| 9 | |
| 5 | |
| 5 | |
| 4 |