Sql server MAX值行get

本文介绍了Sql server MAX值行get的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述 CustomerID StartWeight EndWeight Charges AddWeight AddCharges1 0.00 0.50 50 0 01 0.60 1.00 100 1 702 0.00 0.50 60 0 02 0.60 1.00 110 1 803 0.00 1.00 120 1 100 select * from table其中CustomerID = 1 这显示前两行的结果。 我尝试了什么： select * from table where CustomerID=1this show the result of first two line.What I have tried:select * from table where CustomerAccountID=1 and EndWeight=(select MAX(EndWeight) from table) 这个显示空值，而我想显示第二行This show null value while i want to show the second row推荐答案 不完全确定问题是什么随着你的查询/为什么你得到不正确的数据，我嘲笑你你的数据集和查询提供了预期的结果。 Not entirely sure what the problem is with your query/why you are getting incorrect data, i mocked up your data set and the query provides expected results.DECLARE @CpMaxValueRow TABLE (CustomerId INT NULL,EndWeight FLOAT NULL);INSERT INTO @CpMaxValueRow ( CustomerId, EndWeight )VALUES ( 1, -- CustomerId - int 0.5 -- EndWeight - float )INSERT INTO @CpMaxValueRow ( CustomerId, EndWeight )VALUES ( 1, -- CustomerId - int 1 -- EndWeight - float )INSERT INTO @CpMaxValueRow ( CustomerId, EndWeight )VALUES ( 2, -- CustomerId - int .5 -- EndWeight - float )INSERT INTO @CpMaxValueRow ( CustomerId, EndWeight )VALUES ( 2, -- CustomerId - int 1 -- EndWeight - float )INSERT INTO @CpMaxValueRow ( CustomerId, EndWeight )VALUES ( 2, -- CustomerId - int 1 -- EndWeight - float ) SELECT * FROM @CpMaxValueRow AS A WHERE CustomerId = 1 AND EndWeight = (SELECT MAX(B.EndWeight) FROM @CpMaxValueRow AS B) 这篇关于Sql server MAX值行get的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！