我正在尝试将多值列拆分为ssis脚本组件中的多个记录。我有一栏是演员的名字,另一栏是他们的主演电影(用逗号隔开)。现在,我想拆分信息,以便每个原始文件都包含演员的姓名和仅一部电影的标题。我正在使用下面的代码,但它有问题。有谁能够帮助我?
我使用找到的代码,仅将输入和输出更改为西里尔字母,以适应程序的语言。
Imports System
Imports System.Data
Imports System.Math
Imports Microsoft.SqlServer.Dts.Pipeline.Wrapper
Imports Microsoft.SqlServer.Dts.Runtime.Wrapper
Public Class ScriptMain
Inherits UserComponent
Public Overrides Sub Вход0_ProcessInputRow(ByVal Row As Вход0Buffer)
' This array would hold the single numeric values after you tokenize the input column '
Dim inputNumericValuesArray As Array
' This varibale would hold one value from the array during the loop '
Dim currentNumericValue As String
' Tokenize the NumericValues column by splitting it based on a semicolon separator '
inputNumericValuesArray = Row.ПреобразованиеданныхПреобразованиевЮникодknownForTitles.Split(","c)
' Loop on the retrieved tokens adding each in a new row '
For Each currentNumericValue In inputNumericValuesArray
' Create a new row '
Выход0Buffer.AddRow()
' Get the TaskName from the source row and assign it to the output row without any changes '
Выход0Buffer.nconst = Row.ПреобразованиеданныхПреобразованиевЮникодnconst
' Parse the current numeric value as decimal '
' and assign it to the Numeric value of the output row '
Выход0Buffer.knownForTitle = Decimal.Parse(currentNumericValue)
Next
End Sub
End Class
错误为0xC0047062
。错误的完整说明如下:
Ошибка:0xC0047062вЗаполнениеname_title 1 1,Компонентскриптов [23]:System.NullReferenceException:Ссылканаобъектнеуказываетна экземпляробъекта。
答案 0 :(得分:0)
在使用输入列之前,只需检查它们是否为空:
Imports System
Imports System.Data
Imports System.Math
Imports Microsoft.SqlServer.Dts.Pipeline.Wrapper
Imports Microsoft.SqlServer.Dts.Runtime.Wrapper
Public Class ScriptMain
Inherits UserComponent
Public Overrides Sub Вход0_ProcessInputRow(ByVal Row As Вход0Buffer)
' This array would hold the single numeric values after you tokenize the input column '
Dim inputNumericValuesArray As Array
' This varibale would hold one value from the array during the loop '
Dim currentNumericValue As String
If Not Row.ПреобразованиеданныхПреобразованиевЮникодknownForTitles_IsNull Then
' Tokenize the NumericValues column by splitting it based on a semicolon separator '
inputNumericValuesArray = Row.ПреобразованиеданныхПреобразованиевЮникодknownForTitles.Split(","c)
' Loop on the retrieved tokens adding each in a new row '
For Each currentNumericValue In inputNumericValuesArray
' Create a new row '
Выход0Buffer.AddRow()
' Get the TaskName from the source row and assign it to the output row without any changes '
If Not Row.ПреобразованиеданныхПреобразованиевЮникодnconst_IsNull Then
Выход0Buffer.nconst = Row.ПреобразованиеданныхПреобразованиевЮникодnconst
Else
Выход0Buffer.nconst)IsNull = True
End If
' Parse the current numeric value as decimal '
' and assign it to the Numeric value of the output row '
Выход0Buffer.knownForTitle = Decimal.Parse(currentNumericValue)
Next
End If
End Sub
End Class