如何獲得已在SQLSERVER

Question

混合了角色，我已經定義了這樣的一個表最大值：

Name  Value 
-----  ----- 
Alice  MN21 
Bob  MN22 

我想得到這樣

select Name,MAX(Value) as Value from #Character 

的最大值，它會顯示

Name  Value 
----  ----- 
Bob  MN22 

任何想法？

Answer 1

簡單是最好的

select top 1 Name,Value from #Character order by Value desc 

Answer 2

試試這個

select Name,Value from #Character where value in (
    select MAX(CAST(value AS int)) from #Character) 

Answer 3

您可以使用SUBSTRING只得到數字爲如下相同的格式：

SELECT TOP(1) 
    Name, 
    Value, 
    SUBSTRING(Value,3,LEN(Value)) AS MaxValue 
FROM @tblTest order by CAST(SUBSTRING(Value,3,LEN(Value)) AS INT) DESC 

Answer 4

試試這個

select Name,MAX(Value REGEXP '[0-9]{5}') as Value from #Character 

Answer 5

你需要像這個？

CREATE TABLE #CH (NAME VARCHAR(20), VALUE VARCHAR(10)) 
INSERT INTO #CH VALUES ('Alice', 'MN21'), ('Bob', 'MN22'), ('Angie', 'AO42'),('Karl', 'AO27'); 
SELECT NAME, MAXVAL, VALUE 
FROM #CH 
INNER JOIN (SELECT SUBSTRING(VALUE,1,2) AS LEFTPART, MAX(SUBSTRING(VALUE,3,2)) AS MAXVAL 
      FROM #CH 
      GROUP BY SUBSTRING(VALUE,1,2)) B ON #CH.VALUE = B.LEFTPART+B.MAXVAL 

Output: 
NAME     MAXVAL VALUE 
-------------------- ------ ---------- 
Bob     22  MN22 
Angie    42  AO42