Sql server SQL-重复行（更改一列）

我很难在SQLServerManagementStudio 17中创建包含表中重复值的视图

我的桌子是这样的：

DATE = datetime 
Product = varchar(10)
Price = decimal(18,2)

Date     | Product | Price 

07-12-17 |    1    | 32

06-12-17 |    24   | 35 

每天有1-24种产品

我要创建以下视图选项卡：

Date     | Product | Price 

07-12-17 |    1.1  | 32

07-12-17 |    1.2  | 32

07-12-17 |    1.3  | 32

07-12-17 |    1.4  | 32  

06-12-17 |    24.1 | 35 

06-12-17 |    24.2 | 35 

06-12-17 |    24.3 | 35 

06-12-17 |    24.4 | 35 

---

每天24种产品都是如此

尝试使用

交叉连接
和
值

SELECT
  t.[Date],
  CONCAT(t.Product,'.',l.num) ProductLabel,
  t.Price
FROM [Your table] t
CROSS JOIN (VALUES(1),(2),(3),(4)) l(num)
ORDER BY t.[Date],t.Product,l.num

带有
UNION ALL的变量

SELECT
  t.[Date],
  t.Product+'.'+l.Label ProductLabel,
  t.Price
FROM [Your table] t
CROSS JOIN
  (
    SELECT '1' Label UNION ALL SELECT '2' UNION ALL SELECT '3' UNION ALL SELECT '4'
  ) l
ORDER BY t.[Date],t.Product,l.Label

SELECT [Date],Product+'.1' ProductLabel,Price FROM [Your table]
UNION ALL SELECT [Date],Product+'.2',Price FROM [Your table]
UNION ALL SELECT [Date],Product+'.3',Price FROM [Your table]
UNION ALL SELECT [Date],Product+'.4',Price FROM [Your table]
ORDER BY [Date],ProductLabel

如果您有另一个表，其中包含数字为1-4的行，则可以对该表使用
CROS JOIN

SELECT
  t.[Date],
  CONCAT(t.Product,'.',l.[ID from another table]) ProductLabel,
  t.Price
FROM [Your table] t
CROSS JOIN [Your table with numbers] l
ORDER BY t.[Date],t.Product,l.[ID from another table]

如果您只需要4个副本，那么您还可以使用4个查询与
UNION ALL

SELECT
  t.[Date],
  t.Product+'.'+l.Label ProductLabel,
  t.Price
FROM [Your table] t
CROSS JOIN
  (
    SELECT '1' Label UNION ALL SELECT '2' UNION ALL SELECT '3' UNION ALL SELECT '4'
  ) l
ORDER BY t.[Date],t.Product,l.Label

SELECT [Date],Product+'.1' ProductLabel,Price FROM [Your table]
UNION ALL SELECT [Date],Product+'.2',Price FROM [Your table]
UNION ALL SELECT [Date],Product+'.3',Price FROM [Your table]
UNION ALL SELECT [Date],Product+'.4',Price FROM [Your table]
ORDER BY [Date],ProductLabel

尝试将
交叉联接
与
值一起使用

SELECT
  t.[Date],
  CONCAT(t.Product,'.',l.num) ProductLabel,
  t.Price
FROM [Your table] t
CROSS JOIN (VALUES(1),(2),(3),(4)) l(num)
ORDER BY t.[Date],t.Product,l.num

带有
UNION ALL的变量

SELECT
  t.[Date],
  t.Product+'.'+l.Label ProductLabel,
  t.Price
FROM [Your table] t
CROSS JOIN
  (
    SELECT '1' Label UNION ALL SELECT '2' UNION ALL SELECT '3' UNION ALL SELECT '4'
  ) l
ORDER BY t.[Date],t.Product,l.Label

SELECT [Date],Product+'.1' ProductLabel,Price FROM [Your table]
UNION ALL SELECT [Date],Product+'.2',Price FROM [Your table]
UNION ALL SELECT [Date],Product+'.3',Price FROM [Your table]
UNION ALL SELECT [Date],Product+'.4',Price FROM [Your table]
ORDER BY [Date],ProductLabel

如果您有另一个表，其中包含数字为1-4的行，则可以对该表使用
CROS JOIN

SELECT
  t.[Date],
  CONCAT(t.Product,'.',l.[ID from another table]) ProductLabel,
  t.Price
FROM [Your table] t
CROSS JOIN [Your table with numbers] l
ORDER BY t.[Date],t.Product,l.[ID from another table]

如果您只需要4个副本，那么您还可以使用4个查询与
UNION ALL

SELECT
  t.[Date],
  t.Product+'.'+l.Label ProductLabel,
  t.Price
FROM [Your table] t
CROSS JOIN
  (
    SELECT '1' Label UNION ALL SELECT '2' UNION ALL SELECT '3' UNION ALL SELECT '4'
  ) l
ORDER BY t.[Date],t.Product,l.Label

SELECT [Date],Product+'.1' ProductLabel,Price FROM [Your table]
UNION ALL SELECT [Date],Product+'.2',Price FROM [Your table]
UNION ALL SELECT [Date],Product+'.3',Price FROM [Your table]
UNION ALL SELECT [Date],Product+'.4',Price FROM [Your table]
ORDER BY [Date],ProductLabel

获取以下错误消息“num附近的语法不正确”。“您使用的SQL Server版本是什么？SQL Server Management Studio 17Try
Variant with UNION ALL
。不，它是
SSMS
的版本。SQLServer的版本可能不同。请尝试运行
选择@@Version
以显示它。Microsoft SQL Azure（RTM）收到以下错误消息“num附近的语法不正确”。“您使用的是什么版本的SQL Server？SQL Server Management Studio 17Try
带有UNION ALL的变体
”。不，它是
SSMS
的版本。SQLServer的版本可以不同。请尝试运行
选择@Version
以显示它。它是Microsoft SQL Azure（RTM）