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我在假脱机文件中获取查询,但是如果我想在查询结果之前或之后编写一些回显语句,这怎么可能,例如
spool c:/test.txt !echo "This is showing the details of employee" select * from employee; spool off
我怎样才能在假脱机文件中获得这一行“这正在显示员工的详细信息”
怎么改
!echo "This is showing the details of employee"
至
select "This is showing the details of employee" from dual;
IHTH