11 2018 档案

SQL删除重复数据(根据多个字段)，pandas的nan存入数据库报错
摘要：delete from M_FACTOR_DATA_TEST a where (a.factor_id,a.data_date,a.stock_code) in (select factor_id,data_date,stock_code from M_FACTOR_DATA_TEST group 阅读全文
posted @ 2018-11-21 17:03 Clownszz 阅读(542) 评论(0) 推荐(0)