单项选择题
A.set time on B.set timing on C.set long D.set timelong on E.set sqlprompt
A. write to d:\data1.txt B. output to d:\data1.txt C. spool to d:\data1.txt D. spool on d:\data1.txt E. spool d:\data1.txt
A. set server on B. set serverecho on C. set servershow on D. set serveroutput on E. set serverdisplay on