c# - 记录集给出非不同的值

Question

我有一部分代码，它返回非不同的值。

无论如何，我可以使用不同的函数来获得不同的值吗？

代码：

public static Recordset queryTestDirector(string projectName, string query)
  {
     Recordset result = null;
     /*Connect to Test director and pull down all the currently listed QC numbers*/
     TDConnection tdConnection;
     tdConnection = new TDAPIOLELib.TDConnection();
     tdConnection.InitConnection("http://***/qcbin/", "ABC", "");
     tdConnection.ConnectProject(projectName, "qc_manager", "");

     Command cmd;
     cmd = tdConnection.Command as Command;
     String qcIDQuery = query;
     cmd.CommandText = qcIDQuery;
     result = cmd.Execute() as Recordset;

     tdConnection.Disconnect();
     return result;

  }

问题是返回的结果给出了值：A,A,A,A,B,C,D

我只想要A,B,C,D

请建议。

score 0 · Accepted Answer

没试过，但这可能有效。您首先必须将记录集转换为数据集

ds.Tables[0].DefaultView.ToTable(true,"BG_USER_50");

这是一个解释更多的链接

http://www.c-sharpcorner.com/blogs/230/how-to-get-disticnt-rows-from-a-dataset-or-datatable.aspx

如何在数据表中选择不同的行并存储到数组中

score 0 · Accepted Answer

非常感谢您的输入，这让我重新考虑了查询。

最后这个查询有效：

queryString = "select BG_USER_50, count(*) from BUG where BG_STATUS in ('In Progress','Fixed','Unit Testing','Ready For UAT') and BG_USER_50 is not null group by BG_USER_50 order by 1 desc"

我只需要一个 Group by 子句。

score 0 · Accepted Answer

将您的查询更改为

select distinct BG_USER_50 from BUG where BG_STATUS in ('In Progress','Fixed','Unit Testing','Ready For UAT') and BG_USER_50 is not null order by BG_BUG_ID desc

应该解决你的问题

c# - 记录集给出非不同的值

3 回答 3

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