CreateQuery rates01747 (children 2)
 Identifier rates01747
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 1)
    ExpressionList (children 3)
     Literal \'USD\' (alias from_currency)
     Literal \'EUR\' (alias to_currency)
     Literal Float64_1.2 (alias rates01747)
