cobar支持用datetime类型做拆表的维度吗?

我刚试了下貌似会报错
mysql> insert into myorder (id, city_id, place_tm, name) values (1,10,'2015-06-01 00:00:00','testme1');
ERROR 1003 (HY000): For input string: "2015-06-01 00:00:00"

Reproduce the reported INSERT using a datetime value and inspect Cobar's handling of the sharding-dimension value. Determine why "2015-06-01 00:00:00" is rejected, then verify that inserts using a datetime dimension complete successfully.

Written by the indexing model from the issue text.