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这是一个非常简单的用例。读出实体并更新它。但浮油显然不知道不更新身份栏。当然,我做错了什么。Scala + Play + Slick + freeslick + MS SQL Server:SQLServerException:无法更新标识列'ID'
这是我想要做的一个例子。假设表中存在数据,我刚刚省略了创建步骤。
case class Foo(id:Option[Long], bar:String)
class FooTable(tag:Tag) extends Table [Foo](tag, Some("schema"), "Foo") {
def id = column[Option[Long]]("id", O.PrimaryKey, O.AutoInc)
def bar = column[String]("bar")
def * = (id, bar) <> ((Foo.apply _).tupled, Foo.unapply)
}
class FooDAO @Inject() (protected val dbConfigProvider: DatabaseConfigProvider)(implicit ec:ExecutionContext) {
val dbConfig = dbConfigProvider.get[JdbcProfile]
val db = dbconfig.db
val Foos = TableQuery[FooTable]
def get(id:Long): Future[Option[Foo] = {
db.run(Foos.filter(_.id === id).result.headOption)
}
def update(foo:Foo): Future[Int] = {
db.run(Foos.filter(_.id === foo.id).update(foo))
}
}
...
class FooController @Inject(fooDao:FooDAO)(implicit ec:ExecutionContext) extends Controller {
...
private def doFooUpdate(id:Long, newBar:String): Unit = {
fooDao.get(id).map { fooOption =>
// assume it exists and the .get() doesn't throw exception
fooDao.update(fooOption.get().copy(bar=newBar)) // kaboom
}
}
}
唯一的例外是:
异常:com.microsoft.sqlserver.jdbc.SQLServerException:无法更新标识列 '身份证'。
调试日志记录显示SQL语句:
[调试] s.j.J.statement - 准备声明:更新 “模式”, “富” 设置 “ID”= “酒吧”=? 。其中, “模式”, “美孚”, “ID”= 1234
从build.sbt:
libraryDependencies ++= Seq(
...
"com.typesafe.play" %% "play-slick" % "2.0.2",
"com.typesafe.play" %% "play-slick-evolutions" % "2.0.2",
"com.typesafe.slick" %% "slick" % "3.1.0",
"org.suecarter" %% "freeslick" % "3.1.1.2",
...
)
因此,如果我有一个宽表,我需要在更新中列举每一列这种方式? –