brianmario/mysql2 — pull request #247 by osheroff (2012-03-07 15:10:39+00:00)
Title: Support mysql's select_db

A little-used feature of the mysql client library, admittedly, but I'd like to support mysql2 in my active-record-connection-pooling library, https://github.com/zendesk/active_record_host_pool -- which relies on using select_db to get the correct database.