Mysql 按最高和最低顺序排列

我的问题与Select有关，我想按ASC和DESC排序字段，请看示例：

我有表产品，我想订购的字段称为价格，因此，我知道我可以这样做：

SELECT Price FROM Products ORDER BY Price ASC.

但我希望看到最高的价格和最低的价格，因为我知道我能做到最高：

 SELECT Price FROM Products ORDER BY Price ASC limit 1; 

那么，如何在1 select中选择最高值和最低值

我还想选择价值最高的产品和价值最低的产品的名称

---

关于。

按价格说明限额1从产品订单中选择价格？？
按价格描述限制1从产品订单中选择价格？？
如果要查看最高和最低价格，请使用以下查询：

select highest, lowest from
(
SELECT Price as highest FROM Products ORDER BY Price DESC limit 1;
SELECT Price as lowest FROM Products ORDER BY Price ASC limit 1;
) t

如果要查看最高和最低价格，请使用以下查询：

select highest, lowest from
(
SELECT Price as highest FROM Products ORDER BY Price DESC limit 1;
SELECT Price as lowest FROM Products ORDER BY Price ASC limit 1;
) t

使用简单的
MIN
和
MAX
聚合函数怎么样

SELECT MAX(Price) as MaxPrice, MIN(Price) as MinPrice FROM Products

使用简单的
MIN
和
MAX
聚合函数怎么样

SELECT MAX(Price) as MaxPrice, MIN(Price) as MinPrice FROM Products

最简单的方法是：

SELECT MIN(Price) LowestPrice, MAX(Price) HighestPrice FROM Products

但在某些情况下，您可能希望使用
UNION
语句：

(SELECT 'Lowest'  type, Price FROM Products ORDER BY Price ASC  LIMIT 1)
UNION
(SELECT 'Highest' type, Price FROM Products ORDER BY Price DESC LIMIT 1)

最简单的方法是：

SELECT MIN(Price) LowestPrice, MAX(Price) HighestPrice FROM Products

但在某些情况下，您可能希望使用
UNION
语句：

(SELECT 'Lowest'  type, Price FROM Products ORDER BY Price ASC  LIMIT 1)
UNION
(SELECT 'Highest' type, Price FROM Products ORDER BY Price DESC LIMIT 1)

这将显示最高价格或最低价格的所有产品：

SELECT Products.*
FROM Products
WHERE Price = (SELECT MAX(Price) FROM Products)
      OR Price = (SELECT MIN(Price) FROM Products)

或者你想要这样的东西：

SELECT
  Products.*,
  m.mx As Highest,
  m.mn As Lowest,
  CASE WHEN Products.Price = m.mx THEN 'Max' ELSE 'Min' END As Is_Max_or_Min
FROM
  Products INNER JOIN (
    SELECT MAX(Price) mx, MIN(Price) mn
    FROM Products
  ) m ON Products.Price IN (m.mx, m.mn)

SELECT
  m.Lowest, p1.Name Name_Lowest,
  m.Highest, p2.Name Name_Highest
FROM
  (SELECT MIN(Price) Lowest, MAX(Price) Highest FROM Products) m
  INNER JOIN Products p1 ON m.Lowest = p1.Price
  INNER JOIN Products p2 ON m.Highest = p2.Price
LIMIT 1

如果您希望它们位于同一行，并且如果只有一种产品的最高价格和最低价格，您可以使用以下内容：

SELECT
  Products.*,
  m.mx As Highest,
  m.mn As Lowest,
  CASE WHEN Products.Price = m.mx THEN 'Max' ELSE 'Min' END As Is_Max_or_Min
FROM
  Products INNER JOIN (
    SELECT MAX(Price) mx, MIN(Price) mn
    FROM Products
  ) m ON Products.Price IN (m.mx, m.mn)

SELECT
  m.Lowest, p1.Name Name_Lowest,
  m.Highest, p2.Name Name_Highest
FROM
  (SELECT MIN(Price) Lowest, MAX(Price) Highest FROM Products) m
  INNER JOIN Products p1 ON m.Lowest = p1.Price
  INNER JOIN Products p2 ON m.Highest = p2.Price
LIMIT 1

或者，如果您只需要更简单的东西，您可以使用：

(SELECT 'Max' Is_Max_Or_Min, Products.*
 FROM Products ORDER BY Price DESC LIMIT 1)
UNION ALL
(SELECT 'Min', Products.*
 FROM Products ORDER BY Price LIMIT 1)

这将显示最高价格或最低价格的所有产品：

SELECT Products.*
FROM Products
WHERE Price = (SELECT MAX(Price) FROM Products)
      OR Price = (SELECT MIN(Price) FROM Products)

或者你想要这样的东西：

SELECT
  Products.*,
  m.mx As Highest,
  m.mn As Lowest,
  CASE WHEN Products.Price = m.mx THEN 'Max' ELSE 'Min' END As Is_Max_or_Min
FROM
  Products INNER JOIN (
    SELECT MAX(Price) mx, MIN(Price) mn
    FROM Products
  ) m ON Products.Price IN (m.mx, m.mn)

SELECT
  m.Lowest, p1.Name Name_Lowest,
  m.Highest, p2.Name Name_Highest
FROM
  (SELECT MIN(Price) Lowest, MAX(Price) Highest FROM Products) m
  INNER JOIN Products p1 ON m.Lowest = p1.Price
  INNER JOIN Products p2 ON m.Highest = p2.Price
LIMIT 1

如果您希望它们位于同一行，并且如果只有一种产品的最高价格和最低价格，您可以使用以下内容：

SELECT
  Products.*,
  m.mx As Highest,
  m.mn As Lowest,
  CASE WHEN Products.Price = m.mx THEN 'Max' ELSE 'Min' END As Is_Max_or_Min
FROM
  Products INNER JOIN (
    SELECT MAX(Price) mx, MIN(Price) mn
    FROM Products
  ) m ON Products.Price IN (m.mx, m.mn)

SELECT
  m.Lowest, p1.Name Name_Lowest,
  m.Highest, p2.Name Name_Highest
FROM
  (SELECT MIN(Price) Lowest, MAX(Price) Highest FROM Products) m
  INNER JOIN Products p1 ON m.Lowest = p1.Price
  INNER JOIN Products p2 ON m.Highest = p2.Price
LIMIT 1

或者，如果您只需要更简单的东西，您可以使用：

(SELECT 'Max' Is_Max_Or_Min, Products.*
 FROM Products ORDER BY Price DESC LIMIT 1)
UNION ALL
(SELECT 'Min', Products.*
 FROM Products ORDER BY Price LIMIT 1)

你想要的是价格还是整排的价格？您将如何打破关系（多行共享最低/最高）？随便挑一个？返回所有同龄人？您只想要价格还是整行显示此价格？您将如何打破关系（多行共享最低/最高）？随便挑一个？返回所有同行？现在有点困难，除了价格之外，如果我想要最高和最低的产品名称？你觉得呢？现在有点困难，除了价格，如果我想知道产品的名称，最高和最低？你觉得怎么样？@Tennosuke我已经更新了我的上一个查询，我想这就是你要找的。。。如果可以的话，请告诉我：）这么难吗？“没有比这更简单的方法了吗？”Tennosuke我又编辑了一遍，我认为更简单的方法是最后一种one@Tennosuke我已经更新了我的上一个查询，我想这就是你想要的。。。如果可以的话，请告诉我：）这么难吗？“没有比这更简单的方法了吗？”Tennosuke我又编辑了一遍，我认为更简单的方法是最后一种