[wp-trac] [WordPress Trac] #33501: Starting w/ WP4.2, upgrade scenario may fail for non-MySQL installs

[WordPress Trac]

#33501: Starting w/ WP4.2, upgrade scenario may fail for non-MySQL installs
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 Reporter:  RSkoon        |       Owner:
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:
Component:  Database      |     Version:  4.1.2
 Severity:  normal        |  Resolution:
 Keywords:                |     Focuses:
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Changes (by pento):

 * focuses:  administration =>
 * version:  4.3 => 4.1.2
 * milestone:  Awaiting Review =>


Comment:

 Given that the `is_mysql` flag was created specifically for compatibility
 with non-MySQL db dropins, I'm okay with making some changes to how it
 works in WPDB.

 I think the correct fix would be to change `public $is_mysql = null;` to
 `public $is_mysql = false;`, but I haven't tested that. :-)

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Ticket URL: <https://core.trac.wordpress.org/ticket/33501#comment:6>
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