WHERE dep_time BETWEEN '10:00:00' AND '14:00:00' # WHERE HOUR(dep_time) BETWEEN '10' AND '14' ## 8. Calculate the average duration of flights between two cities. SELECt DISTINCT source,destination, ...
SUM(DECODE(DEPTNO, 10, SAL, 0)) AS "Dept 10 Sal", SUM(DECODE(DEPTNO, 20, SAL, 0)) AS "Dept 20 Sal", SUM(DECODE(DEPTNO, 30, SAL, 0)) AS "Dept 30 Sal", ...