oracle数据库账号权限设置密码ORACLE,SQLSERVER等数据库如何获取某张表中相同字段最近一条数

SELECT * FROM
( SELECT JBXX.*,row_number() OVER (partition BY oracle账号WRYMC ORDER BY WRYMC,CJSJ DESC) R
FROM T_WRY_JBXX JBXX
) A WHERE R=1