SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function CAST (children 1)
     ExpressionList (children 2)
      Function arrayElement (children 1)
       ExpressionList (children 2)
        Function CAST (children 1)
         ExpressionList (children 2)
          Literal \'[1,2,3]\'
          Literal \'Array(UInt64)\'
        Function CAST (children 1)
         ExpressionList (children 2)
          Function arrayElement (children 1)
           ExpressionList (children 2)
            Function CAST (children 1)
             ExpressionList (children 2)
              Function array (children 1)
               ExpressionList (children 2)
                Identifier number
                Identifier number
              Literal \'Array(UInt8)\'
            Identifier number
          Literal \'UInt64\'
      Literal \'UInt8\'
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function numbers (children 1)
       ExpressionList (children 1)
        Literal UInt64_3
