oracle怎么查看表字段的类型

select column_name,data_type,DATA_LENGTH From all_tab_columns
where table_name=upper('表名') AND owner=upper('数据库登录用户名')

select column_name,data_type,DATA_LENGTH From all_tab_columns
where table_name=upper('Mid_Payinfo') AND owner=upper('cgtest')

create table Mid_Payinfo(
GUID  VARCHAR2(100),
DkAmount NUMBER(22),
CreateBy Varchar(40),
CreateDate Date,
ApproveDate Date,
ApprovedBy Varchar2(40),
SFProviderCode varchar2(80),
SFProviderName varchar2(200),
PayDate Date,
Billstate number（22）,
BillPk varchar2(100)
)