[ 'addPgIndex', 'externallinks', 'el_from_index_60', '( el_from, el_index_60, el_id )' ],
[ 'addPgField', 'user_groups', 'ug_expiry', "TIMESTAMPTZ NULL" ],
[ 'addPgIndex', 'user_groups', 'user_groups_expiry', '( ug_expiry )' ],
[ 'addPgIndex', 'externallinks', 'el_from_index_60', '( el_from, el_index_60, el_id )' ],
[ 'addPgField', 'user_groups', 'ug_expiry', "TIMESTAMPTZ NULL" ],
[ 'addPgIndex', 'user_groups', 'user_groups_expiry', '( ug_expiry )' ],