为什么我看不到专栏的评论？

Question

我看不到专栏的评论。

我认为一切都做得很好，但我没有得到我想要的

create table TRANSAKCIJE (
tx_id number generated by default as identity,
acc_id number,
tx_date date,
tx_iznos number,

constraint fk_accounts
foreign key(acc_id)
references accounts(acc_id)
);                    

comment on column transakcije.tx_id 
is 'This is transaction ID';

comment on column transakcije.acc_id
is 'This is accounts ID';

comment on column transakcije.tx_date
is 'This is transaction DATE';

comment on column transakcije.tx_iznos
is 'This is transaction AMOUNT';

commit;

desc transakcije;

我得到了这个输出：

Name     Null?    Type   
-------- -------- ------ 
TX_ID    NOT NULL NUMBER 
ACC_ID            NUMBER 
TX_DATE           DATE   
TX_IZNOS          NUMBER

Answer 1

您需要查询数据字典视图USER_COL_COMMENTS来显示当前用户拥有的表和视图的列的注释，例如using

select column_name, comments
  from user_col_comments
 where table_name = 'TRANSAKCIJE'

如果您需要直接在表格中添加评论，您可以使用 USER_TAB_COMMENTS

Demo

为什么我看不到专栏的评论？

Why can't I see comment on column?

sql

oracle

ddl