Question

为了审计目的，我编写了以下触发器。当我尝试更新Sales.SalesOrderHeader表中的记录时，我收到以下错误：

Msg 16916，Level 16，State 1，Procedure tr_AuditUpdate，Line 11 A 光标名称为＆＃39; c_Audit2＆＃39;不存在。

这是触发器：

 USE [AdventureWorks2008R2]
    GO
    /****** Object:  Trigger [Sales].[tr_AuditUpdate]    Script Date: 9/19/2016 9:27:36 AM ******/
    SET ANSI_NULLS ON
    GO
    SET QUOTED_IDENTIFIER ON
    GO
    ALTER trigger [Sales].[tr_AuditUpdate]
    on [Sales].[SalesOrderHeader]
    for Update
    AS
    SET NOCOUNT ON
    BEGIN
    DECLARE @EntityCode1 int
    DECLARE @OldStatus1 nvarchar(100)
    DECLARE @NewStatus1 nvarchar(100)

    if @@ROWCOUNT>0
        DECLARE c_Audit2 CURSOR LOCAL FOR
        Select  d.SalesOrderID,d.Status,i.Status
        From    deleted AS d
        join inserted AS i
        on i.SalesOrderID=d.SalesOrderID
    Open c_Audit2


    Fetch Next From c_Audit2
    INTO @EntityCode1, @OldStatus1, @NewStatus1

    While @@FETCH_STATUS=0
    BEGIN
      execute sp_Audit @AuditedTable='Sales.SalesOrderHeader',
                       @EntityCode=@EntityCode1,
                       @OldStatus=@OldStatus1,
                       @NewStatus1=@NewStatus1,
                       @AuditUpdate='+',
                       @AuditInsert='-',
                       @AuditDelete='-'

      Fetch Next From c_Audit2
      INTO @EntityCode1, @OldStatus1, @NewStatus1
    END

    CLOSE c_Audit2
    DEALLOCATE c_Audit2
    END

这是更新声明

update Sales.SalesOrderHeader
set Status=4
where SalesOrderID=43659

Answer 1

只有在@@ ROWCOUNT> 0时才会创建光标，就像你在触发器的开头写的一样。删除它，如果它会正常工作。

if @@ROWCOUNT>0
    DECLARE c_Audit2 CURSOR LOCAL FOR
    Select  d.SalesOrderID,d.Status,i.Status
    From    deleted AS d
    join inserted AS i
    on i.SalesOrderID=d.SalesOrderID
open c_Audit2 -- fails when @@rowcount=0

因为如果不总是创建游标。

然后你的下一个陈述是

open c_Audit2

如果“@@ ROWCOUNT＆gt; 0”返回false

，则会失败

删除此代码： if @@ ROWCOUNT＆gt; 0 ，您的触发器将有效。

＆＃39; CURSOR_NAME＆＃39;不存在

1 个答案: