troubleshooting Question

Subquery results in SP getting lost when called in .Net App

Avatar of Dominic Lennon
Dominic LennonFlag for United Kingdom of Great Britain and Northern Ireland asked on
Microsoft SQL ServerASP.NET
3 Comments1 Solution406 ViewsLast Modified:

I've written a Stored Procedure below:-

CREATE PROCEDURE [dbo].[getQuestionsByTopic]
      -- Add the parameters for the stored procedure here
      @topicId int,
      @quoteId int
      -- SET NOCOUNT ON added to prevent extra result sets from
      -- interfering with SELECT statements.

    -- Insert statements for procedure here
      SELECT q.*, a.questionAnswer, a.answerId FROM question q
      LEFT JOIN (SELECT questionId, questionAnswer, quoteId, Id AS answerId FROM questionAnswer WHERE quoteId = @quoteId) AS a ON q.questionId = a.questionId
      WHERE q.topicId = @topicId;

When ran from SQL Management Studio, it returns what I want - all questions and any answers based on Quote ID. However, when I call it in my .Net app, the fields specifically in the subquery never appear. Any ideas? Here's my code which grabs a dataset anyway:-

public DataTable getQuestionsByTopic (int topicId, int quoteId) {
                  DataTable dt = new DataTable();
                  SqlConnection conn = new SqlConnection();
                        using (SqlCommand command = new SqlCommand()) {
                              command.Connection = conn;
                              command.CommandType = CommandType.StoredProcedure;
                              command.CommandText = "getQuestionsByTopic";
                    command.Parameters.AddWithValue("@quoteId", topicId);
                    command.Parameters.AddWithValue("@topicId", topicId);

                              try { using(SqlDataAdapter adapt = new SqlDataAdapter(command)) adapt.Fill(dt); }
                              catch (Exception ex) { WritetoEventLog(ex.Message); }
                              finally { conn.Close(); }
                  return dt;

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