row number over partition by 可以多种排序吗答:row_number() 顺序号码, 也就是 行号, 比如 1,2,3,4,5 这样的顺序。over 语法需要,必须的。partition by name, kecheng,score 是按照 name, kecheng,score 分区。也就是 如果有 不同的 name, kecheng,score , 这个 序号又重新从1开始计算。order by rowid 是 排序方式, 也就...
求sql语句,求统计出来最大值。答:t3.b,t3.bbFROM (SELECT a,b,bbFROM (SELECT a,b,COUNT(b) AS bbFROM dbo.testGROUP BY a,b)t1) t3INNER JOIN (SELECT a,MAX(bb) ccFROM (SELECT a,b,COUNT(b) AS bbFROM dbo.testGROUP BY a,b) t1GROUP BY a) t2 ON t3.a=t2.a AND t3.bb=t2.ccORDER BY a结果:...