An operator tree is displayed as a result of which command?
A. set showplan on
B. set option show_lio on
C. set statistics plancost on
D. set option show long
Answer:C
An operator tree is displayed as a result of which command?
A. set showplan on
 B. set option show_lio on
 C. set statistics plancost on
 D. set option show long
