有没有办法在 Slick 中进行多次插入/更新? [英] Is there any way to do multiple inserts/updates in Slick?

问题描述

在 sql 中我们可以这样做:

In sql we can do something like this:

INSERT INTO tbl_name (a,b,c) VALUES(1,2,3),(4,5,6),(7,8,9);

有没有办法在 Slick 中进行多次/批量/批量插入或更新?

Is there any way to do multiple/bulk/batch inserts or updates in Slick?

我们可以做类似的事情吗，至少使用 SQL 普通查询?

Can we do something similar, at least using SQL plain queries ?

推荐答案

对于插入，正如 Andrew 回答的那样，您使用 insertALL.

For inserts, as Andrew answered, you use insertALL.

  def insertAll(items:Seq[MyCaseClass])(implicit session:Session) = {
    (items.size) match {
      case s if s > 0 =>
        try {
          // basequery is the tablequery object
          baseQuery.insertAll(tempItems :_*)
        } catch {
          case e:Exception => e.printStackTrace()
        }
      Some(tempItems(0))
        case _ => None
    }
  }

对于更新，您是 SOL.查看 Scala slick 2.0 updateAll 相当于 insertALL?我最终做了.解释一下，这是代码:

For updates, you're SOL. Check out Scala slick 2.0 updateAll equivalent to insertALL? for what I ended up doing. To paraphrase, here's the code:

  private def batchUpdateQuery = "update table set value = ? where id = ?"

  /**
   * Dropping to jdbc b/c slick doesnt support this batched update
   */
  def batchUpate(batch:List[MyCaseClass])(implicit session:Session) = {
    val pstmt = session.conn.prepareStatement(batchUpdateQuery)

    batch map { myCaseClass =>
      pstmt.setString(1, myCaseClass.value)
      pstmt.setString(2, myCaseClass.id)
      pstmt.addBatch()
    }

    session.withTransaction {
      pstmt.executeBatch()
    }
  }

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