05/11/2016
Happy Saturday! :)
(Click "see more" for an explanation to this joke)
From Reddit user scook0:
Normally the phrase "Can I join you?" would mean "Can I accompany you?". However, because the speaker is an SQL query and the subjects are tables, "join" can also refer to an operation that combines data from two tables in a database.
In addition, the word "table" can refer to the item of furniture (as might be found in a bar), or to a collection of data elements in a database. However, this extra pun is not essential to the core joke.