3.6 Case 2: A More Complex Query
Demonstration using more complex queries.
Case 2 demonstrates the following:
- The functions
SUM(
expression
)
andNVL
(
expr1, expr2
)
in theSELECT
list - The
GROUP BY
andHAVING
clauses
This query retrieves the departments from GTW_EMP
whose total monthly expenses are higher than $10,000
.
Parent topic: Case Studies