百度怎么建立网站,皮肤科医生免费问诊,网站论坛制作,自定义域名select * from ( select t.data maxdata, datatime,s.xlmc,ROW_NUMBER() OVER (PARTITION BY s.xlmc ORDER BY datatime) AS rn from HISTORY_FH_ONEDAY t, CURRENT_FH_XL s where t.code s.code ) c where c.rn1 select * from ( select t.data maxdata, datatime,s.xlmc,ROW_NUMBER() OVER (PARTITION BY s.xlmc ORDER BY datatime) AS rn from HISTORY_FH_ONEDAY t, CURRENT_FH_XL s where t.code s.code ) c where c.rn1
