SELECT t1.Table_Name AS "表名稱",  
t3.comments AS "表說明",   
t1.Column_Name AS "欄位名稱",  
t1.Data_Type AS "資料型別",  
t1.Data_Length AS "長度",  
t1.NullAble AS "是否為空",  
t2.Comments AS "欄位說明",  
t1.Data_Default "預設值" 
FROM cols t1 left join user_col_comments t2  
on t1.Table_name=t2.Table_name and t1.Column_Name=t2.Column_Name  
left join user_tab_comments t3   
on t1.Table_name
 
=t3.Table_name   
WHERE NOT EXISTS ( SELECT t4.Object_Name FROM User_objects t4  
WHERE t4.Object_Type='TABLE'  
AND t4.Temporary='Y'  
AND t4.Object_Name=t1.Table_Name )  

ORDER BY t1.Table_Name, t1.Column_ID;