我有一个很大的文本文件,其中包含多个不同的行。
我正在使用条件拆分,它查看行类型(字段 1),然后采取操作,主要是尝试递增变量,将单行拆分为多列(派生),然后将结果写入表中.
但是,当尝试增加变量时,我收到“锁定用于读写访问的变量集合在 PostExecute 外部不可用。”
正在使用脚本组件更新变量。
我尝试将代码移至 PostExecute,但此时它似乎永远不会增加。
Public Overrides Sub Input0_ProcessInputRow(ByVal Row As Input0Buffer)
Dim MaximumKey As Int32 = Me.Variables.SPIParentID ' Grab value of MaxKey which was passed in
' NextKey will always be zero when we start the package.
' This will set up the counter accordingly
If (NextKey = 0) Then
' Use MaximumKey +1 here because we already have data
' and we need to start with the next available key
NextKey = MaximumKey + 1
Else
' Use NextKey +1 here because we are now relying on
' our counter within this script task.
NextKey = NextKey + 1
End If
'Row.pkAAAParentID = NextKey ' Assign NextKey to our ClientKey field on our data row
Me.Variables.SPIParentID = NextKey
End Sub
我希望能够使用已有的条件分割来循环遍历文件,然后当它达到某种记录类型时,它将获取当前的 RecordTypeID 并递增它,然后写入下一条记录。
最佳答案
SSIS变量值不能在数据流任务内更改,该值在整个数据流任务执行后更改。每当您尝试从此变量读取值时,执行数据流任务时它都会返回其值。您可以在脚本中更改使用局部变量来实现相同的逻辑:
Dim MaximumKey As Int32 = 0
Public Overrides Sub PreExecute()
MyBase.PreExecute()
MaximumKey = Me.Variables.SPIParentID ' Read the initial value of the variable
End Sub
Public Overrides Sub Input0_ProcessInputRow(ByVal Row As Input0Buffer)
' NextKey will always be zero when we start the package.
' This will set up the counter accordingly
If (NextKey = 0) Then
' Use MaximumKey +1 here because we already have data
' and we need to start with the next available key
NextKey = MaximumKey + 1
Else
' Use NextKey +1 here because we are now relying on
' our counter within this script task.
NextKey = NextKey + 1
End If
'Row.pkAAAParentID = NextKey ' Assign NextKey to our ClientKey field on our data row
Me.Variables.SPIParentID = NextKey
End Sub
Public Overrides Sub PostExecute()
MyBase.PostExecute()
Me.Variables.SPIParentID = MaximumKey ' Save the latest value into the variable
End Sub
关于sql-server - 增加数据流任务中的变量,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/58155707/