BAQ Summary Table vs. SubQuery

Can anyone tell me:
a) If the Summary table is still used in E10.x?
b) if it is still used I know you can do Aggregates in Sub Queries but when is it appropriate to use a Sub Query and when should I use the Summary table function.

Dear Vicki,

Purists will say that summaries are being phased out and one should always use subqueries going forward. Recently I found that an uplifted E9 BAQ with a summary still worked (they have that little grandfathering checkbox after all) and out of curiosity I attempted to build the same query from scratch in 10.1.600 and it worked! I wouldn’t count on it, but there would be schools of thought on continuing to use something that’s in the process of being deprecated, while it still works.

Best
…Monty.

Summary table is for backward compatibility. Internally it creates several subquieries.

Thank you both so much. I was hoping it would give me another little twist in developing some of the more challenging BAQs.