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Examine the data in the LIST_PRICE and MIN_PRICE columns of the PRODUCTS table: Which two expressions give the same output? (Choose two.)
Correct Answer: B,D
Explanation/Reference: Explanation: Using the COALESCE Function * The advantage of the COALESCE function over the NVL function is that the COALESCE function can take multiple alternate values. * If the first expression is not null, the COALESCE function returns that expression; otherwise, it does a COALESCE of the remaining expressions. Using the COALESCE Function The COALESCE function returns the first non-null expression in the list. Syntax COALESCE (expr1, expr2, ... exprn) In the syntax: * expr1 returns this expression if it is not null * expr2 returns this expression if the first expression is null and this expression is not null * exprn returns this expression if the preceding expressions are null Note that all expressions must be of the same data type.