The best answer I’ve seen is: https://stackoverflow.com/a/27783730/154248
What’s it used for: imagine you needed to join a table on itself. That tag is a way to distinguish between the tables taking part in a query.
The best answer I’ve seen is: https://stackoverflow.com/a/27783730/154248
What’s it used for: imagine you needed to join a table on itself. That tag is a way to distinguish between the tables taking part in a query.