<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def get_result(self):
 """ Build compiled SQL expression from the bottom up and return as a string """

        translated = self.translate(self.expr)
        if self._needs_name(self.expr):
            # TODO: this could fail in various ways
            name = self.expr.get_name()
            translated = self.name(translated, name)
        return translated