Handling potential null values when combining properties in API endpoint

How do you handle potential null values that you may want to combine into one property. For example:
If address.line2 is null then the whole address returns null. Is there a way to do that part conditionally that there is data in line2?

You can a combination of

coalesce()

,

select()

, and

array::join()

, etc. Generally I would recommend doing this of string manipulation with JavaScript, though.

Thanks . I know I'm doing something a little weird. Storytime:I had an old homemade api endpoint that a vendor was using to pull data into a mobile app. We are cutting over to a new software system and website, and I'm trying to coordinate it all. The mobile app vendor didn't have time to make the change to using our sanity api with new data structure, so I'm using groq to reshape the data to look like the old (poorly designed by me) api
🤡

coalesce() is doing the job