slick

问题 I'm trying to compose a query using Slick 3.0, but can't seem to figure it out. The equivalent SQL is "insert into SavedMail select * from Inbox where Inbox.id = 1" val mailTable = TableQuery[Tables.Inbox] val savedMailTable = TableQuery[Tables.Savedmail] val select = mailTable.filter(_.id === msgId) I'm stuck on how to do the insert now. Help appreciated. 回答1: Here's a solution I've come up with. Perhaps there's a way to not use forceInsertQuery, but hey, this works. val mailTable =

问题 Isn't there a slick/plainSQL native solution to retrieve the auto incremented id of the current INSERT? userId is an auto incremental field in my mySQL table. sql""" INSERT INTO `table`(`email`) OUTPUT INSERTED.userId VALUES ("theEmailAdress@test.de") """.as[Int].firstOption Help would be greatly appreciated. Cheers Oliver 回答1: Depends on the database. For MS SQL it's SCOPE_IDENTITY(), for mySQL it's LAST_INSERT_ID(). Try searching for equivalent for your DB if it's none of the above. Added

问题 Want to map MySQL INT bitmask to Slick. I've found this but have little problem how to use it https://github.com/nafg/slick-additions/blob/master/src/main/scala/scala/slick/additions/Enum.scala Any help how should I define object for i.e. mysql column INT(3) with Enum containing 3 values: lets name them a,b,c here. 回答1: I solved the problem with Enums in the following way (taking your values for an example): import play.api.db.slick.DB import play.api.db.slick.Config.driver.simple._ sealed

问题 In slick we can use query.filter( m => (m.state === state1 && m.status === status1) || (m.state === state2 && m.status == status2)) for an "OR" condition in where clause. However my requirement is I have "OR" conditions in a list (passed by user as part of URL). Conditions list includes tuples of state and status like List[(state1, status1),(state2, status2),(state3, status3)] So what I wanted was to either be able to build the || statement inside of filter so that I can use each of the

问题 Here is the implementation for Slick 2. Slick 2 - Update columns in a table and return whole table object Does anyone have ideas about how to implement this in Slick 3? 回答1: I was able to make this work by extending the awesome work by Tim Harper in https://stackoverflow.com/a/28148606/310275 Here's what I've done now: package utils import scala.language.existentials import slick.ast._ import slick.driver.PostgresDriver._ import slick.driver.PostgresDriver.api._ import slick.jdbc.{GetResult,

问题 In Slick's documentation examples for using Reactive Streams are presented just for reading data as a means of a DatabasePublisher. But what happens when you want to use your database as a Sink and backpreasure based on your insertion rate? I've looked for equivalent DatabaseSubscriber but it doesn't exist. So the question is, if I have a Source, say: val source = Source(0 to 100) how can I crete a Sink with Slick that writes those values into a table with schema: create table NumberTable

问题 I've found this example from slick testing: https://github.com/slick/slick/blob/master/slick-testkit/src/main/scala/com/typesafe/slick/testkit/tests/MapperTest.scala sealed trait Bool case object True extends Bool case object False extends Bool implicit val boolTypeMapper = MappedColumnType.base[Bool, String]( { b => assertNotNull(b) if(b == True) "y" else "n" }, { i => assertNotNull(i) if(i == "y") True else False } ) But I'm trying to create a TypeMapper for org.joda.time.DateTime to/from

问题 How do you update multiple columns using Slick Lifted Embedding ? This document doesn't say much. I expected it to be something like this Query(AbilitiesTable).filter((ab: AbilitiesTable.type) => ab.id === ability_id).map((ab: AbilitiesTable.type) => (ab.verb, ab.subject)).update("edit", "doc") 回答1: I figured it out. It should be like this val map = Query(AbilitiesTable) .filter(_.id === ability_id) .map(ab => ab.verb ~ ab.context) map.update(("", "")) Typesafe, why your documentation is so

问题 I have a followup to another Slick question I recently asked (Slick table Query: Trouble with recognizing values) here. Please bear with me!! I'm new to databasing and Slick seems especially poor on documentation. Anyway, I have this table: object Users extends Table[(Int, String)]("Users") { def userId = column[Int]("UserId", O.PrimaryKey, O.AutoInc) def userName = column[String]("UserName") def * = userId ~ userName } Part I I'm attempting to query with this function: def findByQuery(where:

问题 I have two tables address ,UserAddressMapping in Adress table Adrressid ,Address is there and in the third table i mapped this userid and Addresss id In sql Select a.Addressid,a.AddressNmae from address table a inner join UserAdrressmaping b on a.Adessressid=b.Adreesid where userid=1 How to write this thing in Scala slick This is far what i have done def innerJoin1(UserId:Int): Future[Seq[UserRegister]] = { val join=address.join(addressid).on(_.Userid === _.UserId) dbConfig.run(join.result )