版主求助啊
回答下我的问题：标题为： 三表联合查询，按产地排序，并要求每个产地中有一个最低价格的sql语句的帖子

[解决办法]
top 5不清楚是要干什么，就先不管了，全当你select语句对的，直接用了。你试试结果对不对吧。真心看着眼晕。

SQL code

WITH A AS(SELECT TOP 5 tc.Id,    tc.CottonLength,    tc.CottonMavalue,    tc.CottonStrength,    tc.CottonQuote,    tc.CottonType,  tc.CottonSailing,    CASE tc.CottonType WHEN '1' THEN '港口寄售' WHEN '0' THEN '远期交易' ELSE '' END AS TypeName,  tc.CottonCount,    tc.CottonRemark,  tsc2.[SysName] AS CottonArea,  tsc3.[SysName] AS CottonClass,  tsc4.[SysName] AS CottonYear,  tsc5.[SysName] AS CottonWarehouse  FROM dbo.T_Cotton tc  LEFT JOIN dbo.T_SysCode tsc2 ON tc.CottonArea =tsc2.Id  LEFT JOIN dbo.T_SysCode tsc3 ON tc.CottonClass=tsc3.Id  LEFT JOIN dbo.T_SysCode tsc4 ON tc.CottonYear = tsc4.Id  LEFT JOIN dbo.T_SysCode tsc5 ON tc.CottonWarehouse = tsc5.Id  LEFT JOIN dbo.T_Sale ts ON ts.CottonId=tc.Id  )    SELECT *   FROM A AS T  WHERE (select count(*) from A where CottonArea =t.CottonArea  and CottonQuote>t.CottonQuote )<1