>我有以下sql查询,通过 dapper.net 执行
var resultList = sqlCon.Query<UserProfile, UserAddress, UserProfile>(@"
UPDATE [User].[User_Profile]
SET ProfileStatus = 4
WHERE Id = @UserId
SELECT u.Id [UserId], u.Username, u.Age,
u.ProfileStatus,
a.Id [AddressId], a.Country, a.[State], a.City,
a.Latitude, a.Longitude
FROM [User].[User_Profile] u
INNER JOIN [User].[User_Address] a on u.id = a.UserId
WHERE u.Id = @UserId", (u, a) =>
{
u.Id = a.UserId;
return u;
},
new { UserId = userId }, splitOn: "UserId").FirstOrDefault();
我在运行它时收到此错误:
使用多映射 API 时,请确保在具有 Id 以外的键时设置 splitOn 参数"、"splitOn
我的两个类如下:
首先是我试图填充的用户配置文件
public class UserProfile
{
public Int64 UserId { get; set; }
public string UserName { get; set; }
public int Age { get; set; }
public int ProfileStatus { get; set; }
public Int64 AddressId { get; set; }
public int Country { get; set; }
public int State { get; set; }
public int City { get; set; }
public decimal Latitude { get; set; }
public decimal Longitude { get; set; }
}
这是我的用户地址类:
public class UserAddress
{
public Int64 Id { get; set; }
public Int64 UserId { get; set; }
public int Country { get; set; }
public int State { get; set; }
public int Town { get; set; }
public string PostCode { get; set; }
public decimal Latitude { get; set; }
public decimal Longitude { get; set; }
}
我不确定我做错了什么,因为我想我已经说过要在 UserId 上拆分? 但显然情况并非如此?
**更新**
使用别名更新 sql 语句
SELECT u.Id as [UserId], u.Username as [Username], u.Age as [Age],
u.ProfileStatus as [ProfileStatus],
a.Id as [AddressId], a.Country as [Country], a.[State] as [State],
a.City as [City], a.Latitude as [Latitude], a.Longitude as [Longitude]
FROM [User].[User_Profile] u
INNER JOIN [User].[User_Address] a on u.id = a.UserId
WHERE u.Id = @UserId", (u, a) =>
{
u.UserId = a.UserId;
return u;
},
new { UserId = userId }, splitOn: "AddressId").FirstOrDefault();
SplitOn
不正确,因为UserId
是查询中的第一列。您必须提供将第一个表/类与第二个表/类分隔开来的列,因此不属于表的第一列/别名User_Profile
但User_Address
。
这似乎很AddressId
.
// ...
new { UserId = userId }, splitOn: "AddressId").FirstOrDefault();