2017年4月17日
一些简单sql
摘要： SELECT count(0) as totalNum, sum(CASE WHEN learn_status = '1' AND subject_type = '3' AND STATUS = '1' THEN 1 ELSE 0 END) AS km1, sum(CASE WHEN learn_s 阅读全文
posted @ 2017-04-17 15:10 无敌的小小哒 阅读(195) 评论(0) 推荐(0) 编辑