sql語句查詢某個表中重複的數據

前言 hive表中對應appid字段有數據重複致使sqoop導入到對應mysql數據庫中appid字段不惟一mysql select appid from expt_before_object where date_added >= '2018-10-07' group by appid having count(*)>1;

>>阅读原文<<