oracle查询表信息

SELECT t1.Table_Name AS "表名称",

t3.comments AS "表说明",

t1.Column_Name AS "字段名称",

t2.Comments AS "字段说明",

t1.Data_Type AS "数据类型",

t1.Data_Length AS "长度",

t1.NullAble AS "是否为空",

t1.Data_Default "默认值"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;