我有一个被定义为以下代码的存储过程:
CREATE PROCEDURE GetQuestionsGroupedBySection
@survey_id INT
AS
SELECT S.title, Q.qtext
FROM Sections AS S INNER JOIN Questions AS Q
ON S.id = Q.section_id
WHERE S.survey_id = @survey_id
GROUP BY S.title;
相关表格的定义位置在
CREATE TABLE Questions (
id INT IDENTITY(1,1),
section_id INT,
qtext NVARCHAR(300) NOT NULL,
PRIMARY KEY (id),
FOREIGN KEY (section_id) REFERENCES Sections(id) ON DELETE CASCADE
);
并且
CREATE TABLE Sections (
id INT IDENTITY(1,1),
title NVARCHAR(200) NOT NULL,
survey_id INT,
PRIMARY KEY (id),
FOREIGN KEY (survey_id) REFERENCES Surveys(id) ON DELETE CASCADE
);
现在我正在尝试从我的服务器端代码调用它,以便将分组以List
的形式获取到元素类型中。
public class QuestionsBySection
{
public string SectionTitle { get; set; }
public List<string> SecionQuestions;
}
(或者有更好的数据结构可以使用吗?)我现在拥有的是:
public List<QuestionsBySection> GetQuestionsAndSection (int survid)
{
// survid: survey id
List<QuestionsBySection> AllQuestions = new List<QuestionsBySection>();
using (SqlCommand cmd = new SqlCommand("GetQuestionsGroupedBySection", this._Conn))
{
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@survey_id", survid);
this._Conn.Open();
using ( SqlDataReader dataReader = cmd.ExecuteReader() )
{
while ( dataReader.Read() )
{
// ...
}
}
this._Conn.Close();
}
return AllQuestions;
}
但我不确定如何填写// ...
。有什么提示吗?
GROUP BY S.title;
。 - user5648283