oracle使用sql脚本生成csv文件案例学习

脚本内容如下：
<div class="codetitle"><a style="CURSOR: pointer" data="9318" class="copybut" id="copybut9318" onclick="doCopy('code9318')"> 代码如下:<div class="codebody" id="code9318">
set linesize 3000;
set heading off;
set feedback off;
set term off;
set pagesize 0;
set trimspool on;
spool a.csv;
select c1_name||','||c2_name from dual;
select c1||','||c2 from tbtest
spool off;