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belindal Visitor
Visitor

Problems with Power Query Editor

Hi Everyone, 

I encountered this error in Query Editor.

"Preview.Error: The type of the current preview value is too complex to display.
Details:"

when i was trying to use the function such as "Append Queries" in Query Editor.

 

However the this table can be preview in the Power BI desktop.

 

Appreciate your help. I was thinking is it because there is around 60,000 rows in this table? is there any limitation in the preview in the Query Editor?

 

Thank you.

 

 

Previow.Error  Power Query Editor.JPG

Previow.Error  Power Query Editor 1.JPG

4 REPLIES 4
Super User
Super User

Re: Problems with Power Query Editor

Hi there

The preview should only load initially about a 1000 rows.

Is the source table and the table you are appending from having all the identical column names (Including upper and lower case spelling) as well as the same data types?

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Microsoft v-yulgu-msft
Microsoft

Re: Problems with Power Query Editor

Hi @belindal,

 

Please test whether the same error prompts if appending two queries which have fewer rows.

 

Regards,

Yuliana Gu

Community Support Team _ Yuliana Gu
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
nicohg93 Visitor
Visitor

Re: Problems with Power Query Editor

I am having the same issue here when appending just two factsales tables. Both tables have about 50k rows. is there a certain threshold when it comes to appending tables together? if so, what is it? Thanks

Super User
Super User

Re: Problems with Power Query Editor

Hi there

As far as I know there should not be any limitation when doing the actual append, I have done a few million rows before with no issues.

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