March 2018 K-Pop Comebacks / Debuts / Mvs

In the table below there are all K-Pop releases during March 2018.
Error
cannot calculate position of \' within \'2018-02-28\' AND kpop_mvs.rel_date < \'2018-04-01\'
cannot calculate position of \' within \'2018-02-28\' AND kpop_mvs.rel_date < \'2018-04-01\'