Question

Database diagram

对于sql-server如何将SKU行插入表SKU_DATA，然后将SKU插入INVENTORY表中，所有分支和Quantity on the hand = 2，Quantityonhand = 0。

我需要在SKUDATA中插入一个SKU项目，并在库存表中对应所有现有分支Quantityonhand = 2和Quantityonhand = 0。

请帮助谢谢

BRANCH

name varchar (30) not NULL,
managerNum INT NOT NULL

SKU_DATA

SKU Int NOT NULL  IDENTITY (1000,1),
description varchar (40) NOT NULL  UNIQUE,
department varchar(30) NOT NULL default 'Home Entertainment',
sellingPrice numeric (7,2) NOT NULL

SKU Int NOT NULL,
branch varchar (30) NOT NULL ,
quantityOnHand Int NOT NUll ,
quantityOnOrder Int NOT NUll

触发

 CREATE TRIGGER NewSku
ON dbo.SKU_DATA
After INSERT
as
   begin
        SET NOCOUNT ON;

  declare
@description varchar (40),
    @department varchar(30),
    @sellingPrice numeric (7,2)


    DECLARE @Output TABLE (SKU INT) 

    INSERT INTO  dbo.SKU_DATA ([DESCRIPTION], DEPARTMENT, SELLINGPRICE)
        OUTPUT INSERTED.SKU INTO @Output(SKU)--getting Inserted ID from SKU_DATA to @Output table
    VALUES (@description, @department, @sellingPrice);


    INSERT INTO INVENTORY (SKU ,branch ,quantityOnHand ,quantityOnOrder ) 
             --Loading SKU information against all branches to INVENTORY
    SELECT t.SKU,b.name,2, 0
    FROM Branch b
    CROSS APPLY (SELECT SKU FROM @Output)t
END

NewSku，第17行无法将值NULL插入列'description'，表'tt.dbo.SKU_DATA';列不允许空值。 INSERT失败。

Answer 1

在sql中，您可以从INSERTED表中获取插入的行详细信息。

CREATE PROCEDURE InsertNewSkuWithInventory
        @description varchar (40),
        @department varchar(30),
        @sellingPrice numeric (7,2)
    AS


    BEGIN

        DECLARE @Output TABLE (SKU INT) 

        INSERT INTO  dbo.SKU_DATA ([DESCRIPTION], DEPARTMENT, SELLINGPRICE)
            OUTPUT INSERTED.SKU INTO @Output(SKU)--getting Inserted ID from SKU_DATA to @Output table
        VALUES (@description, @department, @sellingPrice);


        INSERT INTO INVENTORY (SKU ,branch ,quantityOnHand ,quantityOnOrder ) 
                 --Loading SKU information against all branches to INVENTORY
        SELECT t.SKU,b.name,2, 0
        FROM Branch b
        CROSS APPLY (SELECT SKU FROM @Output)t
    END

如果您想编写触发器，请从上述过程中删除库存插入部件并编写如下触发器。对于SKU_Data表中的每个插入，此触发器将被触发并将数据插入Inventory表。

程序：

  CREATE PROCEDURE InsertNewSkuWithInventory
        @description varchar (40),
        @department varchar(30),
        @sellingPrice numeric (7,2)
    AS


    BEGIN 

        INSERT INTO  dbo.SKU_DATA ([DESCRIPTION], DEPARTMENT, SELLINGPRICE)
        VALUES (@description, @department, @sellingPrice);
END

触发：

  CREATE TRIGGER UpdateInventory
   ON dbo.SKU_DATA
   AFTER INSERT
  AS

  INSERT INTO INVENTORY (SKU ,branch ,quantityOnHand ,quantityOnOrder ) 
         --Loading SKU information against all branches to INVENTORY
 SELECT t.SKU,b.name,2, 0
 FROM Branch b
 CROSS APPLY (SELECT SKU FROM INSERTED)t

Answer 2

您不需要光标。只需将所有分支插入#BranchList，其余部分如下。

Create procedure InsertNewSkuWithInventory
        @description varchar (40),
        @department varchar(30),
        @sellingPrice numeric (7,2),
    AS
        Declare @SKU as int

        CREATE TABLE #BranchList
        (
            branch varchar(30)
        )

    BEGIN
        INSERT INTO  dbo.SKU_DATA (description, department, sellingPrice)
        VALUES (@description, @department, @sellingPrice);

        Select @SKU =SKU
        From dbo.SKU_DATA
        Where description = @description 
        And department = @department 
        And sellingPrice = @sellingPrice;

        INSERT INTO #BranchList
        -- Your code to fetch all branches

        INSERT INTO INVENTORY
        SELECT @SKU, branch, 2, 0
        FROM #BranchList
    END

如何在sql server

2 个答案: