Sql server 显示每个用户订购的文章_Sql Server

Sql server 显示每个用户订购的文章

sql-server

Sql server 显示每个用户订购的文章,sql-server,Sql Server,我有以下资料： customerID | OrderID | OrderPosition | Articlenumber| -----------+---------+---------------+--------------+ 101 | 1 | 1 | 123 | 101 | 1 | 2 | 799 | 102 | 2 | 1

我有以下资料：

customerID | OrderID | OrderPosition | Articlenumber|
-----------+---------+---------------+--------------+
101        | 1       | 1             | 123          |
101        | 1       | 2             | 799          |
102        | 2       | 1             | 111          |
103        | 3       | 1             | 456          |
101        | 4       | 1             | 789          |
103        | 5       | 1             | 444          |
103        | 5       | 2             | 999          |
101        | 6       | 1             | 555          |
101        | 6       | 2             | 777          |
101        | 6       | 3             | 222          |

我希望按照每个customerID的orderID较高优先顺序和OrderPosition较低优先顺序，最多订购4件物品：

customerID |articelnumber 1|articelnumber 2|articelnumber 3|articelnumber 4|
-------+-------------------+---------------+---------------+---------------+
101        |555            |777            |222            | 789           |
102        |111            |NULL           |NULL           |NULL           |
103        |444            |999            |456            |NULL           |

按此方式尝试，但无法正常工作：

select *
from 
(
select customerid, OrderID , OrderPosition, Articlenumber FROM table
) src
pivot
(
  avg (Articlenumber)
  for OrderPosition in ([articelnumber 1], [articelnumber 2], [articelnumber 3], [articelnumber 4])
) piv

修改样本数据以满足您的要求

IF OBJECT_ID('tempdb..#TEMP ')IS NOT NULL
DROP TABLE  #TEMP 
;WITH CTE(customerID , OrderID , OrderPosition , Articlenumber)
AS
(
SELECT 101,  1 , 1 , 123 UNION ALL         
SELECT 101,  1 , 2 , 799 UNION ALL         
SELECT 102,  2 , 1 , 111 UNION ALL         
SELECT 103,  3 , 1 , 456 UNION ALL         
SELECT 101,  4 , 1 , 789 UNION ALL         
SELECT 103,  5 , 1 , 444 UNION ALL         
SELECT 103,  5 , 2 , 999 UNION ALL         
SELECT 101,  6 , 1 , 555 UNION ALL         
SELECT 101,  6 , 2 , 777 UNION ALL         
SELECT 101,  6 , 3 , 222          
)
SELECT * , SUM(ArticleNumber)OVER(PARTITION BY customerID  ORDER BY customerID ) AS SumOfArticlePerCustomer
INTO #TEMP 
FROM
(
SELECT * ,
    ROW_NUMBER()OVER(PARTITION BY customerID ORDER BY OrderID DESC  ) RNk,
    'ArticleNumber_'+CAST(ROW_NUMBER()OVER(PARTITION BY customerID ORDER BY OrderID DESC ) AS VARCHAR(10))  AS ArticleNumberData
FROM CTE
)DT
WHERE RNk <= 4

SELECT * FROM #TEMP

如果只需要四列和上面列出的相同的快速输出，则始终可以使用行号、CTE和一些连接：

;with TopFour
as
(
    SELECT *,
        ROW_NUMBER() OVER(PARTITION BY [customerID] ORDER BY orderID DESC, OrderPosition ASC) as [TheOrder]
    FROM [table]
)
SELECT
    a.[customerID],
    a.[Articlenumber] as [articlenumber 1],
    b.[Articlenumber] as [articlenumber 2],
    c.[Articlenumber] as [articlenumber 3],
    d.[Articlenumber] as [articlenumber 4]
FROM 
    TopFour a
LEFT JOIN 
    TopFour b
ON 
    a.customerID = b.customerID
AND 
    b.TheOrder = 2
LEFT JOIN
    TopFour c
ON 
    a.customerID = c.customerID
AND 
    c.TheOrder = 3
LEFT JOIN 
    TopFour d
ON 
    a.customerID = d.customerID
AND 
    d.TheOrder = 4
WHERE 
    a.TheOrder = 1

我花了一段时间才得到与预期输出相同的结果，但最终我还是成功地做到了：

if exists (select 1 from sysobjects where name = 'TempTable')
drop table TempTable;

if exists (select 1 from sysobjects where name = 'TempTable2')
drop table TempTable2;

declare @cols   nvarchar(max)
,       @cols2  nvarchar(max)
,       @sql  nvarchar(max)
,       @loop   int;

create table TempTable (id int primary key identity, CustomerID int, OrderID int, OrderPosition int, ArticleNumber int)

insert into TempTable (CustomerID, OrderID, OrderPosition, ArticleNumber) values (101,1,1,123)
insert into TempTable (CustomerID, OrderID, OrderPosition, ArticleNumber) values (101,1,2,799)
insert into TempTable (CustomerID, OrderID, OrderPosition, ArticleNumber) values (102,2,1,111)
insert into TempTable (CustomerID, OrderID, OrderPosition, ArticleNumber) values (103,3,1,456)
insert into TempTable (CustomerID, OrderID, OrderPosition, ArticleNumber) values (101,4,1,789)
insert into TempTable (CustomerID, OrderID, OrderPosition, ArticleNumber) values (103,5,1,444)
insert into TempTable (CustomerID, OrderID, OrderPosition, ArticleNumber) values (103,5,2,999)
insert into TempTable (CustomerID, OrderID, OrderPosition, ArticleNumber) values (101,6,1,555)
insert into TempTable (CustomerID, OrderID, OrderPosition, ArticleNumber) values (101,6,2,777)
insert into TempTable (CustomerID, OrderID, OrderPosition, ArticleNumber) values (101,6,3,222);

create table TempTable2 (CustomerID int, OrderID int, OrderPosition int, ArticleNumber int, ArticleDesc varchar(100))

select @loop = min(id) from TempTable
while @loop is not null

begin
    set @sql    = ' insert into TempTable2 (CustomerID, OrderID, OrderPosition, ArticleNumber, ArticleDesc)
                    select top 4 CustomerID, OrderID, OrderPosition, ArticleNumber, ''ArticleNumber ''+cast(rank() over (order by orderID desc, OrderPosition)as varchar)
                    from    TempTable where CustomerID = '+cast((select CustomerID from TempTable where id = @loop) as varchar)+
                    'order by orderID desc, OrderPosition'
    exec (@sql)
    select @loop = min(id) from TempTable where id > @loop
end

select
    CustomerID
,   sum(isnull([ArticleNumber 1],0))    [ArticleNumber 1]
,   sum(isnull([ArticleNumber 2],0))    [ArticleNumber 2]
,   sum(isnull([ArticleNumber 3],0))    [ArticleNumber 3]
,   sum(isnull([ArticleNumber 4],0))    [ArticleNumber 4]
from
(
select
CustomerID, OrderID, OrderPosition, ArticleDesc, ArticleNumber
from    TempTable2
group by CustomerID, OrderID, OrderPosition, ArticleDesc, ArticleNumber
)   d
pivot
(sum(ArticleNumber) for ArticleDesc in ([ArticleNumber 1],[ArticleNumber 2],[ArticleNumber 3],[ArticleNumber 4])
)   p
group by CustomerID

我的答案可能不是上面天才们回答的最好，但我仍然得到了同样的结果

但是你没有总结你例子中的文章。要将前4篇文章显示为每个客户的列吗？右键-编辑它

if exists (select 1 from sysobjects where name = 'TempTable')
drop table TempTable;

if exists (select 1 from sysobjects where name = 'TempTable2')
drop table TempTable2;

declare @cols   nvarchar(max)
,       @cols2  nvarchar(max)
,       @sql  nvarchar(max)
,       @loop   int;

create table TempTable (id int primary key identity, CustomerID int, OrderID int, OrderPosition int, ArticleNumber int)

insert into TempTable (CustomerID, OrderID, OrderPosition, ArticleNumber) values (101,1,1,123)
insert into TempTable (CustomerID, OrderID, OrderPosition, ArticleNumber) values (101,1,2,799)
insert into TempTable (CustomerID, OrderID, OrderPosition, ArticleNumber) values (102,2,1,111)
insert into TempTable (CustomerID, OrderID, OrderPosition, ArticleNumber) values (103,3,1,456)
insert into TempTable (CustomerID, OrderID, OrderPosition, ArticleNumber) values (101,4,1,789)
insert into TempTable (CustomerID, OrderID, OrderPosition, ArticleNumber) values (103,5,1,444)
insert into TempTable (CustomerID, OrderID, OrderPosition, ArticleNumber) values (103,5,2,999)
insert into TempTable (CustomerID, OrderID, OrderPosition, ArticleNumber) values (101,6,1,555)
insert into TempTable (CustomerID, OrderID, OrderPosition, ArticleNumber) values (101,6,2,777)
insert into TempTable (CustomerID, OrderID, OrderPosition, ArticleNumber) values (101,6,3,222);

create table TempTable2 (CustomerID int, OrderID int, OrderPosition int, ArticleNumber int, ArticleDesc varchar(100))

select @loop = min(id) from TempTable
while @loop is not null

begin
    set @sql    = ' insert into TempTable2 (CustomerID, OrderID, OrderPosition, ArticleNumber, ArticleDesc)
                    select top 4 CustomerID, OrderID, OrderPosition, ArticleNumber, ''ArticleNumber ''+cast(rank() over (order by orderID desc, OrderPosition)as varchar)
                    from    TempTable where CustomerID = '+cast((select CustomerID from TempTable where id = @loop) as varchar)+
                    'order by orderID desc, OrderPosition'
    exec (@sql)
    select @loop = min(id) from TempTable where id > @loop
end

select
    CustomerID
,   sum(isnull([ArticleNumber 1],0))    [ArticleNumber 1]
,   sum(isnull([ArticleNumber 2],0))    [ArticleNumber 2]
,   sum(isnull([ArticleNumber 3],0))    [ArticleNumber 3]
,   sum(isnull([ArticleNumber 4],0))    [ArticleNumber 4]
from
(
select
CustomerID, OrderID, OrderPosition, ArticleDesc, ArticleNumber
from    TempTable2
group by CustomerID, OrderID, OrderPosition, ArticleDesc, ArticleNumber
)   d
pivot
(sum(ArticleNumber) for ArticleDesc in ([ArticleNumber 1],[ArticleNumber 2],[ArticleNumber 3],[ArticleNumber 4])
)   p
group by CustomerID