Question

我在SQLite上创建了一个示例表，其中Id列是自动增量。

CREATE TABLE "ESVLIntegration" ("Id" INTEGER PRIMARY KEY  AUTOINCREMENT  NOT NULL  UNIQUE , "ProcessId" TEXT NOT NULL , "UserId" INTEGER NOT NULL , "Status" TEXT NOT NULL , "StartDate" DATETIME NOT NULL , "EndDate" DATETIME, "Operation" TEXT NOT NULL , "SNEquip" TEXT NOT NULL , "CardName" TEXT NOT NULL , "FilePath" TEXT NOT NULL , "Processed" BOOL NOT NULL )

但是当我第二次尝试插入时，我收到以下错误：

由于约束违规而中止PRIMARY KEY必须是唯一的

这是我的代码

public class ESVLIntegration
{
    public long Id { get; set; }
    public String ProcessId { get; set; }
    public long UserId { get; set; }
    public String Status { get; set; }
    public DateTime StartDate { get; set; }
    public DateTime EndDate { get; set; }
    public String Operation { get; set; }
    public String SNEquip { get; set; }
    public String CardName { get; set; }
    public String FilePath { get; set; }
    public Boolean Processed { get; set; }
}

public class Sample : Database<Sample>
{
    public Table<ESVLIntegration> ESVLIntegration { get; set; }
}

private void WriteParameters()
{
    "Writing sample parameters to SQLite DB".LogDebug();
    var pars = new ESVLIntegration();
    pars.ProcessId = Guid.NewGuid().ToString();
    pars.CardName = "gpp3";
    pars.StartDate = DateTime.Now;
    pars.Status = "Start";
    pars.Operation = VerifyStatus;
    pars.SNEquip = "12345";
    pars.FilePath = @"C:\Folder\FilePath";
    pars.Processed = false;
    using (var conn = new SQLiteConnection(connStr))
    {
       conn.Open();
       var db = Sample.Init(conn, 2);
       db.ESVLIntegration.Insert(pars);
    }
}

关于我在这里做错了什么想法？

修改的

SQlite上的INTEGER列的类型为int64（long）

Answer 1

从SQLite FAQ我发现：

使用此表，语句

INSERT INTO t1 VALUES（NULL，123）;

在逻辑上等同于：

INSERT INTO t1 VALUES（（SELECT max（a）FROM t1）+1,123）;

所以我只是将我的班级ID改为可以为空的

public class ESVLIntegration
{
    public long? Id { get; set; }
    public String ProcessId { get; set; }
    public long UserId { get; set; }
    public String Status { get; set; }
    public DateTime StartDate { get; set; }
    public DateTime EndDate { get; set; }
    public String Operation { get; set; }
    public String SNEquip { get; set; }
    public String CardName { get; set; }
    public String FilePath { get; set; }
    public Boolean Processed { get; set; }
}

现在效果很好！

如何在SQLite中使用AutoIncrement将Dapper.Rainbow插入到表中？

1 个答案: