Limitations of Query Entity and Query Process Analytics

You can google it. Search the Appian documentation and go through academy courses :)

If data sources are complex then it'll be challenging in retrieving and analyzing the data effectively. And also response time may increase. Limited customization and flexibility comparatively. You can refer documentation for clear information.

Hi @Harshit Bump thanks for your valuable suggestion, after conducting through investigations, I have come here and posted my query as I didn't obtain clarity on this... It is really appreciable if you provide any link for limitations on queryprocessanalytics 

What problem are you facing? What is your use case? Are you struggling with the response time or is it just a casual question?

I have faced this question in a client interview!!

Its a casual question @Harshit Bump

I don't think copy-pasting the NAME should be that difficult. 
Also, to answer your question, I came across one some days back on the community itself  - queryEntity cannot be used to add conditional-based grouping. Link

Another popular one can be the data size.

Thanks Harshit