Oacle 에서 작업 표 및 필드 설명

Oacle 에서 표를 만 드 는 것 은 다음 과 같 습 니 다.
 

create table TM_FAULT_BUS_ATTENTION

(

  BUS_NO     NUMBER(6),

  LINE_NO    VARCHAR2(6),

  FILA_NO    NUMBER(3),

  BUS_JOB_NO VARCHAR2(20) not null,

  CITY_NO    NUMBER(4),

  GROUP_NO   NUMBER(4),

  INS_TIME   DATE,

  IS_SEND    NUMBER(1) default 1

);

-- Add comments to the table 

comment on table TM_FAULT_BUS_ATTENTION

  is '         ';

-- Add comments to the columns 

comment on column TM_FAULT_BUS_ATTENTION.BUS_NO

  is '  ';

comment on column TM_FAULT_BUS_ATTENTION.LINE_NO

  is '   ';

comment on column TM_FAULT_BUS_ATTENTION.FILA_NO

  is '   ';

comment on column TM_FAULT_BUS_ATTENTION.BUS_JOB_NO

  is '   ';

comment on column TM_FAULT_BUS_ATTENTION.CITY_NO

  is '  ';

comment on column TM_FAULT_BUS_ATTENTION.GROUP_NO

  is '  ';

comment on column TM_FAULT_BUS_ATTENTION.INS_TIME

  is '    ';

comment on column TM_FAULT_BUS_ATTENTION.IS_SEND

  is '    ';

 

      ，       ？

         ：

SELECT  TABLE_NAME,  TABLE_TYPE,  COMMENTS FROM  USER_TAB_COMMENTS WHERE  TABLE_NAME = 'TM_FAULT_BUS_ATTENTION';

            ：

SELECT  TABLE_NAME,  COLUMN_NAME,  COMMENTS FROM  USER_COL_COMMENTS WHERE  TABLE_NAME = 'TM_FAULT_BUS_ATTENTION';

             ：

select  comments  from USER_COL_COMMENTS where table_name= 'TM_FAULT_BUS_ATTENTION' and column_name= 'LINE_NO'

  ：  ，      ！