Forum

Excel performance v...
 
Notifications
Clear all

Excel performance very slow because of a lot of Power Query tables

6 Posts
2 Users
0 Reactions
144 Views
(@jaryszek)
Posts: 177
Reputable Member
Topic starter
 

hi Guys,

i have about 250 tables imported into excel worbkook using power query. 
It means about 250 queries created. 

What i have noticed after inputting data Excel is slow, has a small delay. But this is annoying and not seems nice to user. 
When i deleted power queries performance is awesome. 

Why this is happenning and how can i improve performance? 
I can not delete queries because i am importing tables once again. 

Please advice,
Jacek

 
Posted : 18/06/2021 4:40 am
(@mynda)
Posts: 4761
Member Admin
 

Hi Jacek,

Well, 250 queries is a LOT! I'd try to find a better approach than creating 250 separate queries. Assuming you're then consolidating these queries into one or multiple tables, I would use Get Files > From Folder.

Mynda

 
Posted : 18/06/2021 8:26 pm
(@jaryszek)
Posts: 177
Reputable Member
Topic starter
 

Thank you Mynda. 

What is the maximum number of queries you did in Workbook? 

Unfortunately they are entirely different. I can not merge them. 
Why NET.Framework behaves like that? 

Best,
Jacek

 
Posted : 19/06/2021 1:20 am
(@mynda)
Posts: 4761
Member Admin
 

So to be clear, the output is to close & load 250 separate tables? 

I'm not sure there's a limit to the number of queries as such and I don't understand NET.Framework to comment on why it's performing the way it is, but like I said, 250 is a lot so it seems reasonable for it to be slow.

 
Posted : 19/06/2021 5:31 am
(@jaryszek)
Posts: 177
Reputable Member
Topic starter
 

As seperated. I have table defaults and map tables and core tables for input data.

When deleting queries workbook is working amazing (when i have about 50 of them max). 

Best,
Luke

 
Posted : 19/06/2021 7:00 am
(@jaryszek)
Posts: 177
Reputable Member
Topic starter
 

Ok tested more...

I think that Power Query is just not that POWER in Excel. I understand Power BI but Excel sucks...

Best,
Jacek

 
Posted : 22/06/2021 10:25 am
Share: