SQL學習，Oracle數據庫常用表及數據備份。

1、Student表及表數據：

create table STUDENT
(
  STU_ID      NUMBER(10) not null,
  STU_NAME    VARCHAR2(32),
  STU_AGE     NUMBER(4),
  STU_SEX     VARCHAR2(6),
  STU_ADDRESS VARCHAR2(2000),
  STU_EMAIL   VARCHAR2(32),
  STU_PHONE   VARCHAR2(16),
  SALARY      NUMBER(8,2),
  CREATE_DATE DATE,
  UPDATE_DATE DATE
);


-- 給表添加註釋
COMMENT ON TABLE STUDENT IS '學生表';

-- 給表設置主鍵
alter table STUDENT add constraint pk_STUDENT primary key(stu_id);

-- 給表字段添加註釋
comment on column STUDENT.STU_ID is '學生ID';

comment on column STUDENT.STU_NAME is '姓名';

comment on column STUDENT.STU_AGE is '年齡';

comment on column STUDENT.STU_SEX is '性別';

comment on column STUDENT.STU_ADDRESS is '地址';

comment on column STUDENT.STU_EMAIL is '郵箱';

comment on column STUDENT.STU_PHONE is '電話';

comment on column STUDENT.SALARY is '薪水';

comment on column STUDENT.CREATE_DATE is '創建時間';

comment on column STUDENT.UPDATE_DATE is '更新時間';


insert into student (STU_ID, STU_NAME, STU_AGE, STU_SEX, STU_ADDRESS, STU_EMAIL, STU_PHONE, SALARY, CREATE_DATE, UPDATE_DATE)
values (1001, '張三年', 18, '男', '浙江省-杭州市-濱江區-遇春花園', '[email protected]', '051-156001', 8789.47, to_date('22-12-2019 16:46:05', 'dd-mm-yyyy hh24:mi:ss'), null);

insert into student (STU_ID, STU_NAME, STU_AGE, STU_SEX, STU_ADDRESS, STU_EMAIL, STU_PHONE, SALARY, CREATE_DATE, UPDATE_DATE)
values (1002, '李月明', 16, '女', '浙江省-杭州市-餘杭區-崑崙府', '[email protected]', '051-156002', 8000.91, to_date('15-08-2019 21:40:08', 'dd-mm-yyyy hh24:mi:ss'), to_date('15-08-2019 22:50:00', 'dd-mm-yyyy hh24:mi:ss'));

insert into student (STU_ID, STU_NAME, STU_AGE, STU_SEX, STU_ADDRESS, STU_EMAIL, STU_PHONE, SALARY, CREATE_DATE, UPDATE_DATE)
values (1003, '李四', 17, '男', '浙江省-杭州市-濱江區-遇春花園', '[email protected]', '051-156005', 8789.47, to_date('01-01-2019 16:46:05', 'dd-mm-yyyy hh24:mi:ss'), null);

insert into student (STU_ID, STU_NAME, STU_AGE, STU_SEX, STU_ADDRESS, STU_EMAIL, STU_PHONE, SALARY, CREATE_DATE, UPDATE_DATE)
values (1004, '王五', 14, '', '浙江省-杭州市-上城區-百苑小區', '[email protected]', '051-156003', 8000.91, to_date('15-08-2019 21:40:08', 'dd-mm-yyyy hh24:mi:ss'), to_date('15-08-2019 22:50:00', 'dd-mm-yyyy hh24:mi:ss'));

insert into student (STU_ID, STU_NAME, STU_AGE, STU_SEX, STU_ADDRESS, STU_EMAIL, STU_PHONE, SALARY, CREATE_DATE, UPDATE_DATE)
values (1005, '趙汝華', 27, '男', '浙江省-杭州市-下城區-羅蘭春天公寓', '[email protected]', '051-156008', 8000.91, to_date('15-08-2019 21:40:08', 'dd-mm-yyyy hh24:mi:ss'), to_date('15-08-2019 22:50:00', 'dd-mm-yyyy hh24:mi:ss'));

insert into student (STU_ID, STU_NAME, STU_AGE, STU_SEX, STU_ADDRESS, STU_EMAIL, STU_PHONE, SALARY, CREATE_DATE, UPDATE_DATE)
values (1006, '肖曉麗', 25, '女', '浙江省-杭州市-西湖區-西子花苑', '[email protected]', '051-156007', 8000.91, to_date('15-08-2019 21:40:08', 'dd-mm-yyyy hh24:mi:ss'), to_date('15-08-2019 22:50:00', 'dd-mm-yyyy hh24:mi:ss'));