case class TableSchema(
                        tableName: Option[String],
                        columns: Option[Array[Column]]
                      )
{
  override def equals(obj: Any): Boolean = {
    if (super.equals(obj)) true
    else {
      obj match {
        case _: TableSchema => val other = obj.asInstanceOf[TableSchema]
          other.tableName == this.tableName &&
            (other.columns.isEmpty && this.columns.isEmpty ||
              other.columns.get.sameElements(this.columns.get))
        case _ => false
      }
    }
  }
}

case class Column(
                   name: Option[String],
                   `type`: Option[String]
                 )


  val input = TableSchema(Option("table1"), Option(Array[Column](Column(Option("col1"), Option("string")), Column(Option("col2"), Option("int")))))

  val input2 = TableSchema(Option("table1"), Option(Array[Column](Column(Option("col1"), Option("string")), Column(Option("col2"), Option("int")))))

  println(input.equals(input2))