SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function length (children 1)
     ExpressionList (children 1)
      Function topKWeighted (children 2)
       ExpressionList (children 2)
        Identifier number
        Literal UInt64_1025
       ExpressionList (children 2)
        Literal UInt64_2
        Literal Int64_-9223372036854775808
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.numbers