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Table ORDER_ITEMS contains columns ORDER_ID, UNIT_PRICE and QUANTITY, of data type NUMBER. Examine these SQL statements: Statement 1: SELECT MAX(unit_price * quantity) "Maximum Order" FROM order_items; Statement 2: SELECT MAX(unit_price * quantity) "Maximum Order" FROM order_items GROUP BY order_id; Which two statements are true?
Correct Answer: A,E
https://docs.oracle.com/javadb/10.8.3.0/ref/rrefsqlj27781.html The Expression can contain multiple column references or expressions, but it cannot contain another aggregate or subquery. It must evaluate to a built-in data type. You can therefore call methods that evaluate to built-in data types. (For example, a method that returns a java.lang.Integer or int evaluates to an INTEGER.) If an expression evaluates to NULL, the aggregate skips that value.