问题与我之前提出的问题有关,但我需要一点帮助......
我有一张兴趣表,其中存储了Seekers
和Employers
...
兴趣表就像:
int_id FK_is_ID FK_ie_ID FK_ic_ID
-------------------------------------
1 2 null 3
2 2 null 5
3 null 1 3
4 null 3 1
5 null 2 5
6 4 null 1
6 3 1 2
FK_is_id = Seeker ID
FK_ie_id = Employer ID
FK_ic_id = Category ID
因此,当搜索者登录时,我正在尝试检索与登录的搜索者具有相似兴趣的EMPLOYER
名称...
我有一个工作正常的代码,给我想要的输出..
SqlConnection myConn2;
SqlCommand myCommand2;
SqlDataReader myReader2;
String SQL2, divjobs;
myConn2 = new SqlConnection(WebConfigurationManager.ConnectionStrings["ApplicationServices"].ToString());
divjobs = "<ul>";
myConn2.Open();
SQL2 = "SELECT ins.int_id, ins.FK_is_ID, ine.FK_ie_ID,emp.e_name,ine.int_id FROM Interests ins INNER JOIN Interests ine ON ins.FK_ic_ID = ine.FK_ic_ID FULL OUTER JOIN employers emp ON emp.e_id=ine.FK_ie_id WHERE ins.FK_is_ID = @sid AND ine.FK_ie_ID IS NOT null order by emp.e_name ASC";
myCommand2 = new SqlCommand(SQL2, myConn2);
myCommand2.Parameters.AddWithValue("@sid", ssid);
myReader2 = myCommand2.ExecuteReader();
if (myReader2.HasRows)
{
while (myReader2.Read())
{
divjobs = divjobs + "<li>" + "<a href='../employers/viewemployer.aspx?EID=" + myReader2["FK_ie_id"] + "'>" + "<div class='jtitle'>" + myReader2["e_name"] + "</div>" + "</li>";
}
divjobs = divjobs + "</ul>";
joblist.InnerHtml = divjobs;
}
else
{
joblist.InnerHtml = "<div style='font-weight:bold;padding:20px;font-size:1.2em;background-color:white;'>"+ "Looks like there is nothing to load!" + "</div>";
}
myConn2.Close();
唯一的问题是如果雇主有2个利益,那么输出会给雇主姓名两次!我希望它只来一次......!
无论如何都要这样做,任何帮助都会受到赞赏......?
答案 0 :(得分:1)
目前,您的结果处于“兴趣”级别,但您确实希望它在雇主级别 - 以下将返回具有匹配兴趣的雇主的明确列表 - 我还抛出了匹配的聚合(计数)每个人的利益:
SELECT
ins.FK_ie_ID,
emp.e_name,
COUNT(ins.int_id) AS InterestCount
FROM
Interests ins
INNER JOIN
Interests ine
ON ins.FK_ic_ID = ine.FK_ic_ID
INNER JOIN
employers emp
ON emp.e_id = ine.FK_ie_id
WHERE
ins.FK_is_ID = @sid
GROUP BY
ins.FK_ie_ID,
emp.e_name
order by emp.e_name ASC
我希望我能正确理解你想要的东西。
此外,我发现您的列命名非常难以使用。由于这个原因,查询中很可能存在拼写错误。他们有这么神秘的原因吗?或者,他们是否不受你的控制?