Update aggregate-functions-transact-sql.md

[Nukgnaw]

Add STRING_AGG to the list of functions that can not follow OVER clause.

[PRMerger9]

@Nukgnaw : Thanks for your contribution! The author, @MashaMSFT, has been notified to review your proposed change.

[MashaMSFT]

Hi @Nukgnaw , thank you for contacting Microsoft and providing your feedback to our documentation! We'll need some time to look into this further. Depending on the complexity, the turnaround time for this may vary anywhere from a few business days to a few business weeks. We'll reply via comment should we need anything further in the meantime, and please feel free to do the same.

Thanks again for your submission, and hope you have a wonderful rest of your day!

[Nukgnaw]

Hi @MashaMSFT, it might be helpful that I provide the error message I got when I tried to use STRING_AGG function followed by OVER clause: The function 'STRING_AGG' is not a valid windowing function, and cannot be used with the OVER clause.

Have a good day!

[MashaMSFT]

Hi @Nukgnaw , thanks for your patience! I was able to confirm this is accurate, and appreciate your addition to the documentation. #sign-off

Thanks again and hope you have a wonderful weekend!

[Nukgnaw]

@MashaMSFT You are welcome! Have a wonderful weekend too!