摘要: link select name as country from ( select name,sum(duration)/count(duration) as avg from ( select t.name,t.id, c1.caller_id, c1.callee_id, c1.duration 阅读全文
posted @ 2020-09-18 09:39 feibilun 阅读(112) 评论(0) 推荐(0) 编辑