Auto translate the last output in a SQL kernel/magic

Currently we have to use the following syntax to auto translate the result of SQL statement so that it can be used in other programming languages.
```
SELECT * INTO ${citiesTable} FROM cities WHERE longitude BETWEEN -80 and -79;
```
It's appealing to have the result of the last executed SQL statement auto translated. The reason is that users will often run a SQL code to see the result and then decide whether he/she wants to auto translate result for use in other languages. If the user decides to auto translate the result of SQL statement, he will need to

1. update the SQL statement (to use the INTO ${} syntax)
2. rerun the SQL statement

First, this is not convenient. Second, it is very great waste of time if the SQL statement takes lots of time to run.