SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function if (children 1)
     ExpressionList (children 3)
      Function modulo (children 1)
       ExpressionList (children 2)
        Identifier number
        Literal UInt64_2
      Function materialize (children 1)
       ExpressionList (children 1)
        Literal \'hello\'
      Function materialize (children 1)
       ExpressionList (children 1)
        Literal \'world\'
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.numbers
   Literal UInt64_5