我有一个相当基本的SSIS包,它将.csv文件加载到SQL表中。但是,当程序包尝试读取数据流任务中的.csv源时,我收到错误消息:“未找到列'X'的列分隔符。处理文件”file.csv“时数据发生错误'Y'行。“
在这种情况下,正在发生的事情是,有成千上万的行包含四重引号中的字符串,即“Jane”Jill“Doe”。但是,在UltraEdit中手动删除这些行中的引号有效,我试图自动化这些包。派生列不起作用,因为它是分隔符的问题。
事实证明我需要一个脚本任务来删除四重引号,然后包才能正确加载文件。下面的代码(我从各种来源拼凑而成)被SSIS接受为无错误但在执行时遇到DTS脚本任务运行时错误:
#region Namespaces
using System;
using System.Data;
using Microsoft.SqlServer.Dts.Runtime;
using System.Windows.Forms;
#endregion
namespace ST_a881d570d1a6495e84824a72bd28f44f
{
[Microsoft.SqlServer.Dts.Tasks.ScriptTask.SSISScriptTaskEntryPointAttribute]
public partial class ScriptMain : Microsoft.SqlServer.Dts.Tasks.ScriptTask.VSTARTScriptObjectModelBase
{
public void Main()
{
// TODO: Add your code here
var fileContents = System.IO.File.ReadAllText(@"C:\\File.csv");
fileContents = fileContents.Replace("<body>", "<body onload='jsFx();' />");
fileContents = fileContents.Replace("</body>", "</body>");
System.IO.File.WriteAllText(@"C:\\File.csv", fileContents);
}
#region ScriptResults declaration
/// <summary>
/// This enum provides a convenient shorthand within the scope of this class for setting the
/// result of the script.
///
/// This code was generated automatically.
/// </summary>
enum ScriptResults
{
Success = Microsoft.SqlServer.Dts.Runtime.DTSExecResult.Success,
Failure = Microsoft.SqlServer.Dts.Runtime.DTSExecResult.Failure
};
#endregion
}
}
我的替代脚本是:
{
string filepath = (string)Dts.Variables[@C:\\"File.csv"].Value;
var fileContents = System.IO.File.ReadAllText(filepath);
fileContents = fileContents.Replace("\"\"", "");
System.IO.File.WriteAllText(@C:\\"File.csv", fileContents);
}
我究竟做错了什么?
下面的C#示例将搜索csv文件,删除双引号文本中包含的任何双引号,然后将修改后的内容写回文件。正则表达式返回任何双引号的匹配,该双引号不在字符串的开头或结尾,或者在它之前/之后没有逗号,并用空字符串替换双引号。您可能已经这样做了,但请确保包含文件路径的变量列在脚本任务的ReadOnlyVariables
字段中。
using System.Collections.Generic;
using System.IO;
using System.Text.RegularExpressions;
string filePath = Dts.Variables["User::FilePath"].Value.ToString();
List<String> outputRecords = new List<String>();
if (File.Exists(filePath))
{
using (StreamReader rdr = new StreamReader(filePath))
{
string line;
while ((line = rdr.ReadLine()) != null)
{
if (line.Contains(","))
{
string[] split = line.Split(',');
//replace double qoutes between text
line = Regex.Replace(line, "(?<!(,|^))\"(?!($|,))", x => x.Value.Replace("\"", ""));
}
outputRecords.Add(line);
}
}
using (StreamWriter sw = new StreamWriter(filePath, false))
{
//write filtered records back to file
foreach (string s in outputRecords)
sw.WriteLine(s);
}
}