npoco.Insert <T>在没有AutoIncrement主键的表上失败

Question

我有一个问题,使用nPoco的'Insert of T'方法,MySQL表定义如下:

CREATE TABLE `TestTable` (
    `Id` INT(11) NOT NULL,
    `StatusEnum` INT(11) NOT NULL,
    PRIMARY KEY (`Id`)
)

Database.Entity定义为......

[TableName("operations.TestTable")]
[PrimaryKey("Id")]
[ExplicitColumns]
public class TestTable
{
    [Column]
    public int Id { get; set; }

    [Column]
    public Status StatusEnum { get; set; } = Status.Default;
}

代码段:

// this works   
var foo = new TestTable { Id = 123 };
database.Execute(
    "insert into operations.TestTable (Id, StatusEnum) values (@0, @1)", 
    foo.Id, 
    foo.StatusEnum);

// this throws "Field 'Id' doesn't have a default value"
var foo2 = new TestTable { Id = 456 };
database.Insert<TestTable>(foo2);   

看看nPoco为两个插入生成的SQL,我看到了这个(从我的日志文件中)......

SQL: insert into operations.TestTable (Id, StatusEnum) values (?0, ?1) -> ?0 [Int32] = "123" -> ?1 [Int32] = "1"
SQL: INSERT INTO operations.TestTable (`StatusEnum`) VALUES (?0); SELECT @@IDENTITY AS NewID; -> ?0 [Int32] = "1"

对于'Insert of T'方法,为什么nPoco认为Id列是一个标识列？从类定义中删除"PrimaryKey"属性没有帮助.

注:此问题是类似于这一问题,但它可能会略有不同.

Answer 1

尝试将主键定义更改为

[PrimaryKey("Id", AutoIncrement=false)]