--获取当前库中有那些表以及表的注释
select * from user_tab_comments;--获取当前表字段以及注释
select * from user_col_comments where table_name='MID_TMALL_EO_ORDER_ITEM';
--例如:
select * from user_tab_comments;select * from user_col_comments where table_name=upper('third_party_merchant')