SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function arrayFill (children 1)
     ExpressionList (children 2)
      Function lambda (children 1)
       ExpressionList (children 2)
        Function tuple (children 1)
         ExpressionList (children 1)
          Identifier x
        Function less (children 1)
         ExpressionList (children 2)
          Identifier x
          Literal UInt64_10
      Function emptyArrayUInt8 (children 1)
       ExpressionList