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我正在尝试找出创建触发器的最佳方法，但我已经使用 sql server 2008 碰壁了我希望创建一个存储所有电话号码（号码）的中央表，这应该包含客户表中的所有客户号码。Numbers 有一个子表 numbercustomer，它将一个数字链接到一个或多个客户。我的表：

CREATE TABLE [Campaign].[Number](
    [NumberID] [int] IDENTITY(1,1) NOT NULL,
    [Number] [varchar](15) NOT NULL,
    [LastUpdated] [timestamp] NOT NULL,
 CONSTRAINT [Pk_Number] PRIMARY KEY CLUSTERED 
(
    [NumberID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]

CREATE TABLE [Campaign].[NumberCustomer](
    [CustomerNumberID] [int] IDENTITY(1,1) NOT NULL,
    [NumberID] [int] NOT NULL,
    [CustomerID] [int] NOT NULL,
 CONSTRAINT [PK_CustomerNumber] PRIMARY KEY CLUSTERED 
(
    [CustomerNumberID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]

CREATE TABLE [Crm].[Customer](
    [CustomerID] [int] IDENTITY(30000,1) NOT NULL,
    [FirstName] [varchar](255) NULL,
    [LastName] [varchar](255) NULL,
    [MobileNumber] [varchar](11) NULL,
    [LandlineNumber] [varchar](11) NULL,
 CONSTRAINT [PK__Customer__8CB286B91CF15040] PRIMARY KEY CLUSTERED 
(
    [CustomerID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]

我希望触发器检查数字表并插入数字（如果不存在）。然后触发器的第二部分将检查并插入如果没有向客户提供链接。我可以使用触发器更新数字表，如下所示，但我担心性能。

CREATE TRIGGER [Crm].[Customer_Number_Updated] ON [Crm].[Customer]
 AFTER Update, INSERT
 NOT FOR REPLICATION AS
 SET NoCount On 

DECLARE 
  @AuditTime DATETIME, 
  @IsDirty BIT
SET @AuditTime = GetDate()

SET @IsDirty = 0

  Begin Try
    INSERT INTO 
        [Campaign].[Number]([Number])
    select 
        number 
    from 
    (
    Select
        i.MobileNumber as number
    From 
        inserted i
    join 
        deleted d
    on 
        i.CustomerID = d.CustomerID 
    and
    isnull(i.MobileNumber ,'') <> isnull(d.MobileNumber,'')
    UNION
    Select
        i.LandlineNumber as number
    From 
        inserted i
    join 
        deleted d
    on 
        i.CustomerID = d.CustomerID 
    and
    isnull(i.LandlineNumber ,'') <> isnull(d.LandlineNumber,'')
    UNION
    Select
        i.AlternateContactNumber as number
    From 
        inserted i
    join 
        deleted d
    on 
        i.CustomerID = d.CustomerID 
    and
    isnull(i.AlternateContactNumber ,'') <> isnull(d.AlternateContactNumber,'')
    ) as nums
    WHERE NOT EXISTS
        (
            SELECT 
                *
            FROM 
                [Campaign].[Number] cn
            WHERE 
                cn.Number = nums.number 
        )
End try
 Begin Catch 
 IF ERROR_NUMBER() <> 2627
   DECLARE @ErrorMessage NVARCHAR(4000), @ErrorSeverity INT, @ErrorState INT;
   SET @ErrorMessage = ERROR_MESSAGE();  
   SET @ErrorSeverity = ERROR_SEVERITY(); 
   SET @ErrorState = ERROR_STATE();  
   RAISERROR(@ErrorMessage,@ErrorSeverity,@ErrorState) with log;
 End Catch

GO

任何帮助将非常感激？

抢

4

1 回答 1

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您的触发器适用于 UPDATE 但不适用于 INSERT：您正在加入 DELETED 和 INSERTED，当您插入新记录时，删除中没有任何内容。您应该在触发器中执行 INSERT 和 UPDATE，或者执行 MERGE。

这是带有插入和更新的代码（仅 try 块中的代码）

插入对已删除进行左连接并检查 id 是否为空（反半连接，相当于没有 texists）。

更新执行插入的内部连接以仅检查更新记录

  Begin Try

    -- insert new records
    INSERT INTO 
        [Campaign].[Number]([Number])
    select 
        i.MobileNumber
    from inserted i
    left join deleted d on i.customerid = d.customerid
    where d.customerid is null -- new records (no deleted record)
    and not exists( select Number from [Campaign].[Number] c where c.number = i.MobileNumber)
    -- union the same for LAndLineNumber
    -- union the same for AlternateNumber

    -- update existing number
    update [Campaign].[Number] 
        set Number = i.MobileNumber
        -- set LandLineNumber too
        -- and AlternateNumber
    from [Campaign].[Number] n
        left join deleted d on d.MobileNumber = n.Number
        inner join inserted i on i.CustomerId = d.CustomerId

End try
于 2013-11-14T18:18:06.670 回答