2017-12-02 286 views
1

我在如何使用存儲過程向一個客戶添加多個位置方面遇到問題。以下是我的表格,我正在使用索引來幫助我爲一個客戶添加多個位置,但是我應該如何爲其添加多個位置?如何使用存儲過程向多個客戶添加多個位置?

CREATE TABLE TCustomer 
(
    intCustomerID INTEGER NOT NULL, 
    strCustomerName VARCHAR(50) NOT NULL, 
    strAddress VARCHAR(50) NOT NULL, 

    CONSTRAINT TCustomer_PK PRIMARY KEY (intCustomerID) 
) 

CREATE TABLE TCustomerLocation 
(
    intLocationID INTEGER NOT NULL, 
    intLocationIndex INTEGER NOT NULL, 
    intCustomerID INTEGER NOT NULL, 

    CONSTRAINT TCustomerLocation_PK 
     PRIMARY KEY(intLocationID, intLocationIndex) 
) 

CREATE TABLE TLocation 
(
    intLocationID INTEGER NOT NULL, 
    strLocationName VARCHAR(50) NOT NULL, 
    strLocationAddress VARCHAR(50) NOT NULL, 
    strLocationCity VARCHAR(50) NOT NULL, 
    CONSTRAINT TLocation_PK PRIMARY KEY(intLocationID) 
) 

CREATE PROCEDURE uspAddCustomerLocation 
    @strCustomerName VARCHAR(50), 
    @strAddress VARCHAR(50), 
    @strLocationName VARCHAR(50), 
    @strLocationAddress VARCHAR(50), 
    @strLocationCity VARCHAR(50) 
AS 

BEGIN TRANSACTION 
SET XACT_ABORT ON 

DECLARE @intCustomerID INTEGER 

SELECT @intCustomerID = MAX(intCustomerID) + 1 
FROM TCustomer (TABLOCKX) -- LOCK TABLE UNTIL THE END OF TRANSACTION 

SELECT @intCustomerID = COALESCE(@intCustomerID , 1) 

    INSERT INTO TCustomer (intCustomerID, strCustomerName , strAddress) 
    VALUES(@intCustomerID ,@strCustomerName ,@strAddress) 

DECLARE @intLocationID INTEGER 
DECLARE @intLocationIndex INTEGER 

SELECT @intLocationID = MAX(intLocationID) + 1 
FROM TLocation (TABLOCKX) -- LOCK TABLE UNTIL THEEND OF TRANSACTION 


COMMIT TRANSACTION 

GO 
+0

程序代碼是**高度供應商特定的** - 所以請添加一個標籤來指定您是否使用'mysql','postgresql','sql-server' ,'oracle'或'db2' - 或者其他的東西。 –

+0

我將從'TABLOCKX'提示中猜測它實際上是'sql-server' –

回答

0

我不是DBA,但我希望這些ID字段是IDENTITY字段。無論如何,我認爲有問題的選擇將是SELECT @intLocationIndex = MAX(intLocationIndex) +1 Where intCustomerID = @intCustomerID

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