SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function countDistinct (children 1)
     ExpressionList (children 2)
      Identifier x
      Identifier y
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 3)
          ExpressionList (children 2)
           Function modulo (alias x) (children 1)
            ExpressionList (children 2)
             Identifier number
             Literal UInt64_11
           Function modulo (alias y) (children 1)
            ExpressionList (children 2)
             Identifier number
             Literal UInt64_13
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             TableIdentifier system.numbers
          Literal UInt64_1000