将 Guid 传递给存储过程会引发 Microsoft.Data.SqlClient.SqlException: 'Incorrect syntax near '@Id'。

Question

我有一个这样的存储过程：

CREATE PROCEDURE [Owner].GetById
    @LanguageCode CHAR(5) = 'en-us', 
    @Id UNIQUEIDENTIFIER
AS
BEGIN
    SELECT ...
    WHERE LanguageCode = @LanguageCode
      AND Id = @Id;
END

我正在尝试使用 Entity Framework 核心来调用存储过程：

var param1 = new SqlParameter ("@LangaugeCode", "en-us");
var param2 = new SqlParameter ("@Id", System.Data.SqlDbType.UniqueIdentifier);
param2.Value = Guid.Parse("0ec0d169-0a4f-4458-a48b-729e1bb0fea9");

var context = new localContext(); // Auto-generated class for DB first approach
var manufacturers= context.Owner.FromSqlRaw($"EXEC Owner.GetById 
@LanguageCode, @Id", param1, param2).ToList();

它抛出一个错误：

Microsoft.Data.SqlClient.SqlException: 'Incorrect syntax near '@Id'.'

发生这种情况是因为 Guid 不能作为 UNIQUEIDENTIFIER 传递还是格式问题？

Answer 1

你能从

中更改查询吗

FromSqlRaw($"EXEC Owner.GetById @LanguageCode @Id", param1, param2).ToList();

收件人：

FromSqlRaw($"EXEC Owner.GetById {0}, {1}", param1, param2).ToList();

Answer 2

我认为您需要以下之一：

var p1 = "en-us";
var p2 = Guid.Parse("0ec0d169-0a4f-4458-a48b-729e1bb0fea9");

var owners= context.Owner.FromSqlRaw(
  "Owner.GetById {0}, {1}",
  p1, 
  p2
}.ToList();

var owners= context.Owner.FromSqlInterpolated(
  $"Owner.GetById {p1}, {p2}").ToList();

Answer 3

你可以做到这一点。你不需要 EXEC .

FromSqlRaw($"Owner.GetById {0}, {1}", p1, p2)

将 Guid 传递给存储过程会引发 Microsoft.Data.SqlClient.SqlException: 'Incorrect syntax near '@Id'。

Passing Guid to stored procedure throws Microsoft.Data.SqlClient.SqlException: 'Incorrect syntax near '@Id'.'

c#

stored-procedures

entity-framework-core