Interview Question: Shall We Join?

Sample Question #28 (programming – SQL)

In SQL, what’s an inner join and what’s an outer join? What’s the difference between a left join and a right join?

(Comment: SQL is the standard programming language in the database world, and more and more quant shops are setting up SQL-based databases and data warehouses)

Advertisements
This entry was posted in Sample Qs. Bookmark the permalink.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s