我在 SQLite 上创建了一个示例表,其中有一个自动递增的 Id 列。
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,出现以下错误:
Abort due to constraint violation PRIMARY KEY must be unique
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有什么想法吗?
编辑
SQlite 上的 INTEGER 列是 int64(long) 类型
最佳答案
从我发现的 SQLite FAQ 中:
With this table, the statement
INSERT INTO t1 VALUES(NULL,123);
is logically equivalent to saying:
INSERT INTO t1 VALUES((SELECT max(a) FROM t1)+1,123);
所以我只是将我的类 ID 更改为可为空
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!
关于c# - 如何让 Dapper.Rainbow 在 SQLite 中使用 AutoIncrement 插入到表中?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/11771166/