MDL-57649 mod_lesson: Improvement to upgrade query.
authorAdrian Greeve <adrian@moodle.com>
Thu, 20 Jul 2017 01:52:32 +0000 (09:52 +0800)
committerAdrian Greeve <adrian@moodle.com>
Thu, 20 Jul 2017 01:57:25 +0000 (09:57 +0800)
We only need one record for each filearea that we
are removing.


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