Power Query very long loading time

[Anonymous]

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

[v-juanli-msft]

Hi @Anonymous 

You could check the following to improve performance of power query.

Speeding up 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.

[Greg_Deckler]

@ImkeF