我在unix env中使用sql plus，那么如何在假脱机文件中编写echo语句

Question

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写一些echo语句怎么可能 e.g。

spool c:/test.txt
!echo "This is showing the details of employee"
select * from employee;
spool off

如何在“假脱机文件

中显示此行”这是显示员工的详细信息

Answer 1

如何改变

!echo "This is showing the details of employee"

要

select "This is showing the details of employee" from dual;

IHTH