1 -- Set up wl_notificationtimestamp with NULL support.
4 ALTER TABLE /*$wgDBprefix*/watchlist
5 CHANGE wl_notificationtimestamp wl_notificationtimestamp
varbinary(14);
7 UPDATE /*$wgDBprefix*/watchlist
8 SET wl_notificationtimestamp
=NULL
9 WHERE wl_notificationtimestamp
='0';