SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function transform (children 1)
     ExpressionList (children 3)
      Identifier number
      Literal Array_[UInt64_1]
      Literal Array_[NULL]
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.numbers
   Literal UInt64_1
