The derived column is the result of a calculation and is created with a SELECT clause expression that is something other than a simple reference to the column

The derived column is the result of a calculation and is created with a SELECT clause expression that is something other than a simple reference to the column

• A. COALESCE
• B. derived column
• C. CAST
• D. Concatenating Strings

Answer: (B)

A derived column is created in the SELECT list by applying a calculation or expression to existing columns, rather than simply pulling data from a single existing column. It’s computed for each row at query time and typically given an alias. This matches the idea in the statement: the column’s value comes from an expression in the SELECT clause, not from a direct reference. Functions like COALESCE, CAST, or operations such as concatenating strings can be used to build such a derived column, but they are just the kinds of expressions you might use—the concept being tested is the derived column itself.

A derived column is created in the SELECT list by applying a calculation or expression to existing columns, rather than simply pulling data from a single existing column. It’s computed for each row at query time and typically given an alias. This matches the idea in the statement: the column’s value comes from an expression in the SELECT clause, not from a direct reference. Functions like COALESCE, CAST, or operations such as concatenating strings can be used to build such a derived column, but they are just the kinds of expressions you might use—the concept being tested is the derived column itself.