SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function equals (children 1)
     ExpressionList (children 2)
      Literal UInt64_3
      Function countEqual (children 1)
       ExpressionList (children 2)
        Function array (children 1)
         ExpressionList (children 4)
          Literal UInt64_0 (alias x)
          Literal UInt64_1
          Identifier x
          Identifier x
        Function materialize (children 1)
         ExpressionList (children 1)
          Identifier x
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.numbers
   Literal UInt64_10
