我正在尝试将 Dapper 与以下 sql 字符串一起使用，但我无法使其工作：
string groupsStringDetailed = "SELECT SUSERGROUP.NAME, SUSERGROUP.DESCRIPTION, SPROGRAMS.PROGRAMNAME, SOBJECTS.NAME FROM ((SIDE.SADMIT SADMIT " +
"INNER JOIN SIDE.SOBJECTS SOBJECTS ON (SADMIT.PROGRAMID=SOBJECTS.PROGRAMID) AND (SADMIT.OBJECTID=SOBJECTS.ID)) " +
"INNER JOIN SIDE.SUSERGROUP SUSERGROUP ON SADMIT.GROUPID=SUSERGROUP.GROUPID) " +
"INNER JOIN SIDE.SPROGRAMS SPROGRAMS ON SOBJECTS.PROGRAMID=SPROGRAMS.ID " +
"WHERE SUSERGROUP.NAME NOT LIKE '%REPORT' ORDER BY SUSERGROUP.NAME, SPROGRAMS.PROGRAMNAME";
我有以下模型类：
public class SAdmit
{
public int GROUPID { get; set; }
public int OBJECTID { get; set; }
public int PROGRAMID { get; set; }
}
public class SObjects
{
public int ID { get; set; }
public int PROGRAMID { get; set; }
public string NAME { get; set; }
}
public class SPrograms
{
public int ID { get; set; }
public string PROGRAMNAME { get; set; }
}
public class SUserGroup
{
public int GROUPID { get; set; }
public string NAME { get; set; }
public string DESCRIPTION { get; set; }
public int VWLISTDEPTH { get; set; }
public int WDNBDAYHISTORY { get; set; }
public string RPDIRECTORY { get; set; }
public string SENDEREMAIL { get; set; }
public int CONNECTION_TIMEOUT { get; set; }
public int APPROVALSTATUS { get; set; }
}
我创建了一个自定义组类，希望能够更轻松地映射这些模型：
public class CustomSGroup
{
public SUserGroup Group { get; set; }
public SPrograms Programs { get; set; }
public SObjects Objects { get; set; }
}
我正在尝试使用 Dapper 来获得我想要的结果：
var output = await cnn.QueryAsync<CustomSGroup, SAdmit, SObjects, SPrograms, CustomSGroup>(groupsStringDetailed, (g, a, o, p) =>
{
a.PROGRAMID = o.PROGRAMID;
a.OBJECTID = o.ID;
a.GROUPID = g.Group.GROUPID;
o.PROGRAMID = p.ID;
return g;
}, splitOn: "PROGRAMID, OBJECTID, GROUPID, NAME");
但我无法看到全局以及我做错了什么，因为它会引发异常
"When using the multi-mapping APIs ensure you set the splitOn param if you have keys other than Id\r\nParameter name: splitOn"
我可以将 Dapper 与更简单的（一个）内部连接 sql 字符串一起使用，但是这个我无法让它工作。