Oracle 同实例中两个不同owner的表字段比较脚本

select a.TABLE_NAME,
a.COLUMN_NAME as  acol,
b.COLUMN_NAME as bcol,
a.DATA_TYPE as adt,
a.DATA_LENGTH as adl,
b.DATA_TYPE as bdt,
b.DATA_LENGTH as bdl
from (
(select a.TABLE_NAME,
a.COLUMN_NAME,
a.DATA_TYPE,
a.DATA_LENGTH
from DBA_TAB_COLUMNS a
where a.OWNER = '<owner1>'
and a.TABLE_NAME='<table_name>'
) a
left join
(select a.TABLE_NAME,
a.COLUMN_NAME,
a.DATA_TYPE,
a.DATA_LENGTH
from DBA_TAB_COLUMNS a
where a.OWNER = '<owner2>'
and a.TABLE_NAME='<table_name>'
) b
on a.COLUMN_NAME = b.COLUMN_NAME)