shell实现查询oracle数据库表，并写到本地txt文件

1、表结构

create table t_student(
    id number(10) primary key,
    name varchar2(50),
    birthday date
);

create sequence seq_t_student start with 1 increment by 1;

insert into t_student values(seq_t_student.nextval,'张三',sysdate);
insert into t_student values(seq_t_student.nextval,'李四',to_date('1990-01-01 13:13:13','yyyy-mm-dd hh24:mi:ss')); 
commit;

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