oracle查询所有的表名和注释

1.oracle查询所有的表和所有的表注释名

select t.table_name , f.comments 
  from user_tables t
 inner join user_tab_comments f
    on t.table_name = f.table_name
 where 1 = 1
   AND COMMENTS like '%scott%'

2.oracle查询所有的表和表字段注释

SELECT t.TABLE_NAME ,
       t.COLUMN_NAME ,
       t.DATA_TYPE  ,
       a.COMMENTS
  FROM USER_TAB_COLUMNS t
  LEFT JOIN USER_COL_COMMENTS a
    ON t.table_name = a.table_NAME
   AND t.COLUMN_NAME = a.COLUMN_NAME