SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 3)
    Literal \'aes-256-ecb\' (alias mode)
    Function unhex (alias ciphertext) (children 1)
     ExpressionList (children 1)
      Literal \'D1B43643E1D0E9390E39BA4EAE150851\'
    Literal \'test_key________________________\' (alias key)
   ExpressionList (children 1)
    Function hex (children 1)
     ExpressionList (children 1)
      Function aes_decrypt_mysql (children 1)
       ExpressionList (children 3)
        Identifier mode
        Function toNullable (children 1)
         ExpressionList (children 1)
          Identifier ciphertext
        Identifier key
