使用Slick,我試圖將數據庫表項直接投影到它們表示的案例類。繼example in the documentation,我設置成使用<>操作映射的投影: case class SomeEntity3(id: Int, entity1: Int, entity2: Int)
val SomeEntityTable = new Table[SomeEntity3]("some_entity_ta
如何使聚合我想迫使光滑像 select max(price) from coffees where ...
但slick's documentation創建查詢不利於 val q = Coffees.map(_.price) //this is query Query[Coffees.type, ...]
val q1 = q.min // this is Column[Option[Dou