Question

我有以下代码从另一个数据库中的表中插入数据，但是如何通过将ID列值中的最后一个记录增加1来插入主键列？在我的情况下，[WORK ORDER #]是主键，它不允许为空。

[WORK ORDER #]是nvarchar(10)

INSERT INTO DB1.dbo.WORKORDERS ([WORK ORDER #], [CUSTOMER], [SO DATE], [SO NUMBER])
    SELECT * 
    FROM OPENQUERY([DB29],
                  'SELECT DISTINCT 
                       NULL, --need to set auto increment value here 
                       Customers.Customer_Bill_Name, 
                       JrnlHdr.TransactionDate,
                       JrnlHdr.Reference)
                   FROM Customers
                   INNER JOIN JrnlHdr ON Customers.CustomerRecordNumber = JrnlHdr.CustVendId
                   WHERE JrnlHdr.JrnlKey_Journal = 11 
                     AND JrnlHdr.TransactionDate = CURDATE()

------------------- //我尝试如下-----

--> You only do this one time...not with each query
create sequence dbo.WorkOrderSequence
  as int
  start with 43236


--> I took out the part that failed (you got option 1 and 3 kinda
--> mashed together)
insert DB1.dbo.WORKORDERS 
   ([WORK ORDER #],[CUSTOMER],[SO DATE],[SO NUMBER],[ASSY PN-S],[CUSTOMER PN],[SHIP VIA],[PROMISED DATE],[COMMENTS],[PO #],[WO Notes])
select 
  convert(varchar(10), next value for DB1.dbo.WorkOrderSequence ),
  x.Customer_Bill_Name,
  x.TransactionDate,
  x.Reference,
  x.ItemID,
  x.PartNumber,
  x.WhichShipVia,
  x.ShipByDate,
  x.Comment2,
  x.CustomerInvoiceNo,
  x.SalesDescription
from
  openquery
  ([DB29],
    'select distinct           
       Customers.Customer_Bill_Name,
       JrnlHdr.TransactionDate,
       JrnlHdr.Reference, 
       LineItem.ItemID ,
       LineItem.PartNumber, 
       Customers.WhichShipVia, 
       JrnlHdr.ShipByDate, 
       JrnlHdr.Comment2,
       JrnlHdr.CustomerInvoiceNo, 
       LineItem.SalesDescription    
FROM   Customers
INNER JOIN JrnlHdr
ON Customers.CustomerRecordNumber = JrnlHdr.CustVendId
LEFT OUTER JOIN Address
ON Customers.CustomerRecordNumber = Address.CustomerRecordNumber
INNER JOIN JrnlRow
ON JrnlHdr.PostOrder = JrnlRow.PostOrder
INNER JOIN LineItem 
ON JrnlRow.ItemRecordNumber = LineItem.ItemRecordNumber
WHERE  JrnlHdr.JrnlKey_Journal = 11 AND JrnlHdr.TransactionDate = CURDATE() 
AND JrnlHdr.PostOrder = JrnlRow.PostOrder  
AND JrnlHdr.CustVendId = Customers.CustomerRecordNumber 
AND JrnlRow.ItemRecordNumber = LineItem.ItemRecordNumber 
AND JrnlHdr.POSOisClosed = 0' 
) as x

Answer 1

选项1

如果您至少使用SQL Server 2012（您没有提及特定版本），则可以使用常规序列号生成器。对于这种情况，我非常喜欢它。在DB1数据库中，您将添加如下序列：

create sequence dbo.WorkOrderSequence
  as int
  start with 5002230 --> pick a starting number greater 
                     --> than any existing [WorkOrder #]

然后，您可以在insert-for-select语句中获取下一个数字：

insert DB1.dbo.WORKORDERS 
  ([WORK ORDER #], [CUSTOMER], [SO DATE], [SO NUMBER])
select 
  convert(varchar(10), next value for DB1.dbo.WorkOrderSequence ),
  x.Customer_Bill_Name,
  x.TransactionDate,
  x.Reference
from
  openquery
  ([DB29],
    'select distinct 
       Customers.Customer_Bill_Name, 
       JrnlHdr.TransactionDate,
       JrnlHdr.Reference
     from
       Customers
       inner join 
       JrnlHdr on 
         Customers.CustomerRecordNumber = JrnlHdr.CustVendId
     where
       JrnlHdr.JrnlKey_Journal = 11
       and 
       JrnlHdr.TransactionDate = CURDATE()' 
  ) as x

序列是一个独立的自动递增数字。每次使用next value for dbo.WorkOrderSequence时，它都会自动递增。这样，您就不必修改任何表定义。

选项2

或者，您可以更改DB1.dbo.WORKORDERS表，以便使用表达式的默认值...

alter table dbo.WORKORDERS
  alter column [Work Order #] nvarchar(10) not null
    default( convert( nvarchar(10), next value for dbo.WorkOrderSequence ) )

如果您这样做，那么您可以完全省略完全插入[Work Order #]并让默认设置成为魔术。

选项3

如果你不是在2012年，但至少在2008年，你仍然可以到达那里......但这有点棘手，因为你必须得到当前的开始[Work Order #]：

insert DB1.dbo.WORKORDERS 
  ([WORK ORDER #], [CUSTOMER], [SO DATE], [SO NUMBER])
select 
  convert(varchar(10), x.RowNum + y.MaxOrderNum ),
  x.Customer_Bill_Name,
  x.TransactionDate,
  x.Reference
from
  openquery
  ([DB29],
    'select distinct 
       row_number() over( order by JrnlHdr.TransactionDate ) as RowNum,
       Customers.Customer_Bill_Name, 
       JrnlHdr.TransactionDate,
       JrnlHdr.Reference
     from
       Customers
       inner join 
       JrnlHdr on 
         Customers.CustomerRecordNumber = JrnlHdr.CustVendId
     where
       JrnlHdr.JrnlKey_Journal = 11
       and 
       JrnlHdr.TransactionDate = CURDATE()' 
  ) as x
  cross join
  (
    select 
      convert( int, max( [Work Order #] ) ) as MaxOrderNum
    from 
      Db1.dbo.WORKORDERS
  ) as y

选项4

如果您使用的是早于2008年的某些内容...您可能希望存储过程分两步执行插入操作：将工作订单插入临时表（具有自动增量的表{{1} }从当前表的最大值开始（[工作单＃]）+ 1）...然后步骤2将临时表插入带有转换的[Work Order #]。

Answer 2

我已经尝试了一点SQL，但没有创建表格。我已经使用postgreSQL和knex这样做了，我相信适合您需求的解决方案也是使用唯一值。我很抱歉，如果这不正确，因为我不熟悉编码，但希望看到这将有助于或查看SQL文档:) difference between primary key and unique key

如何使用SQL insert将自动增量值插入select语句

2 个答案: