在play-slick中使用像contains这样的函数进行sql查询

Question

我刚接触光滑，问题困扰着我。 我想查询名为attach的表，并找到数组attach_id中包含的b，这是一个普通的Scala数组：

val attaches: TableQuery[AttachTable] = TableQuery[AttachTable]
val b = Array[Int](1,2,3)

// This query works well, but I actually need the attach_id that in the array b 
def query = for {
  a <- attaches if (a.attach_id === 1)
} yield (a.url)

// If I replace it like this, it doesn't work, and I don't know why
def query = for {
  a <- attaches if (b.contains(a.attach_id))
} yield (a.url)

// This also failed, because b is Array[Int]
def query = for {
  a <- attaches if (a.attach_id in b)
} yield (a.url)

任何人都可以帮助我吗？

Answer 1

使用

def query = for{
  a<-attaches if a.attach_id inSetBind(b)
} yield (a.url)