create table job_history (
employee_id number(6) not null,
start_date date not null,
end_date date not null,
job_id varchar2(10) not null,
department_id number(4)
);
create table job_history ( employee_id number(6) not null, start_date date not null, end_date date not null, job_id varchar2(10) not null, department_id number(4) ); 有一张job_history表,我往表中插入数据 INSERT INTO job_history VALUES( 102 , TO_DATE('13-JAN-93','