Fix for ticket #3020: set MySQL session time_zone variable to UTC ('+0:00') so TIMESTAMP column values are comparable against our other UTC timestamp values.
MySQL stores TIMESTAMP columns as UTC, but with a local time interface. (SRSLY?!) DATETIME columns are always bare and assumed to be local time, but we keep only UTC in them.
Forcing the session time_zone to UTC means we won't have to worry as much about what we're sending/receiving in there.
Also will let us remove the hack in master commit a7abb2323e
for session tweaks
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@ -480,6 +480,10 @@ class Memcached_DataObject extends Safe_DataObject
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}
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}
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}
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// Needed to make timestamp values usefully comparable.
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if (common_config('db', 'type') == 'mysql') {
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parent::_query("set time_zone='+0:00'");
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}
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}
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return $result;
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