SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 5)
    Identifier number
    Identifier arr1
    Identifier arr2
    Identifier x
    Identifier y
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 3)
          ExpressionList (children 3)
           Identifier number
           Function range (alias arr1) (children 1)
            ExpressionList (children 1)
             Function modulo (children 1)
              ExpressionList (children 2)
               Identifier number
               Literal UInt64_2
           Function range (alias arr2) (children 1)
            ExpressionList (children 1)
             Function modulo (children 1)
              ExpressionList (children 2)
               Identifier number
               Literal UInt64_3
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             TableIdentifier system.numbers
          Literal UInt64_10
    TablesInSelectQueryElement (children 1)
     ArrayJoin (children 1)
      ExpressionList (children 2)
       Identifier arr1 (alias x)
       Identifier arr2 (alias y)
   Set