SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 2)
    Function arraySlice (children 1)
     ExpressionList (children 3)
      Function array (children 1)
       ExpressionList
      Function materialize (children 1)
       ExpressionList (children 1)
        Literal NULL
      Literal NULL
    Literal UInt64_1
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function numbers (children 1)
       ExpressionList (children 1)
        Literal UInt64_2
