查詢表字段明細


select  column_name,data_type,data_length,DATA_PRECISION ,DATA_SCALE 
from all_tab_columns where table_name='tablename'


 
欄位註釋


select   *   from   user_col_comments;
表註釋


select   *   from   user_tab_comments; 


 


 表明細+表註釋+欄位明細+ 欄位註釋


select  ATC.OWNER,atC.TABLE_NAME,utc.comments,ATC.COLUMN_NAME,ATC.DATA_TYPE,ATC.DATA_LENGTH,ATC.NULLABLE, ucc.comments from


(select ATC.OWNER,atC.TABLE_NAME,ATC.COLUMN_NAME,ATC.DATA_TYPE,ATC.DATA_LENGTH,ATC.NULLABLE
from all_tab_columns ATC where ATC.owner in (使用者名稱1，使用者名稱2........) ) atc


left outer join user_col_comments ucc on atc.table_name=ucc.table_name and atc.column_name=ucc.column_name


left outer join user_tab_comments utc on atc.table_name=utc.table_name


order by atc.table_name,atc.column_name