获取sql server中每行的MAX和MIN值

Question

我有一组值为

的行

我希望以下OutPut具有单独的Max和min值

抱歉这个可怜的prntsceen。我不知道如何在stackoverflow中绘制表格。

Answer 1

select value1, value2, value3, value4,
       [min]=(select min(value) from (
              select value1 union all
              select value2 union all
              select value3 union all
              select value4) X(value)),
       [max]=(select max(value) from (
              select value1 union all
              select value2 union all
              select value3 union all
              select value4) Y(value))
  from tbl;

要将NULL识别为 min 值，请使用以下代码

select value1, value2, value3, value4,
       [min]=(select TOP(1) value from (
                 select value1 union all
                 select value2 union all
                 select value3 union all
                 select value4) X(value)
              ORDER BY value ASC),
       [max]=(select TOP(1) value from (
                 select value1 union all
                 select value2 union all
                 select value3 union all
                 select value4) X(value)
              ORDER BY value DESC)
  from tbl;

Answer 2

我希望此链接可以帮助您http://social.msdn.microsoft.com/Forums/en-US/transactsql/thread/007764d0-4a2d-4227-a4db-21fce471fbb3/

Answer 3

试试这个 -

DECLARE @temp TABLE
(
      Value1 INT
    , Value2 INT
    , Value3 INT
    , Value4 INT
)

INSERT INTO @temp (Value1, Value2, Value3, Value4)
VALUES 
    (NULL, 1, 1, NULL),
    (NULL, 1, 2, NULL),
    (NULL, 2, 2, NULL),
    (NULL, 2, 2, NULL),
    (1, 1, 1, 1),
    (2, 2, 1, 2),
    (1, 1, 1, NULL),
    (2, 2, 3, 2),
    (2, 2, 2, 2),
    (1, 1, 1, 1)

SELECT
      Value1
    , Value2
    , Value3
    , Value4
    , MinValue = (
        SELECT TOP 1 value 
        FROM (
            SELECT value = value1
              UNION
            SELECT value2
              UNION
            SELECT value3
              UNION
            SELECT value4
        ) mn
        ORDER BY value
    )
    , MaxValue = (
        SELECT MAX(value) 
        FROM (
            SELECT value = value1
              UNION
            SELECT value2
              UNION
            SELECT value3
              UNION
            SELECT value4
        ) mx
    )
FROM @temp

结果窗口：

Answer 4

请尝试：

declare @T table
(
  id int, 
  num1 int, 
  num2 int, 
  num3 int,  
  num4 int,   
  num5 int
)

insert into @T values
(1,     6,      51,      NULL,      99,      34),
(2,     222,    251,     24,     299,     234),
(3,     NULL,   NULL,    NULL,   NULL,    NULL)

select * From @T

SELECT id,
(SELECT 
(CASE WHEN (num1+num2+num3+num4+num5) IS NULL THEN NULL 
    ELSE MIN(v) end) 
FROM (VALUES (num1), 
            (num2), 
            (num3), 
            (num4), 
            (num5)) AS value(v)) as [MinVal],
(SELECT MAX(v) 
FROM (VALUES (num1), 
            (num2), 
            (num3), 
            (num4), 
            (num5)) AS value(v)) as [MaxVal]
FROM @T