create or replace directory MY_DIR as '/usr/test/';create or replace function f_exportTxt(--传入参数i_query in varchar2,i_separator in varchar2,i_dir in varchar2,i_filename in varchar2) return numberis/*** 函数名:f_exportTxt** 参数:1.i_query 查询sql语句; 2.i_separator 分隔符,...