Why Oracle is saying not a GROUP BY expression?

Question

I am Trying to retrive data from the Oracle database table with following conditions

1. All entries found by zip-code should be grouped, sorted by zip-code desce

Answer 1

It works in MySQl because MySQL has a shoddy interpretation of SQL.

In any proper dialect, anything in the SELECT or ORDER BY clauses needs to be either an aggregate function, or a GROUPed expression.

At the very least, you're going to need to group by ba.uuid, lastname and city.