???????????????????
????select * from simingpai where TIMESTAMP(createTime) >= '2015-9-6';
????select * from simingpai where TIMESTAMP(createTime) >= '2015-9-6 00:00:00';
????select * from simingpai where TIMESTAMP(createTime) >= '2015-9-6 18:15:00';
????select * from simingpai where DATE(createTime) >= '2015-9-6';
????select * from simingpai where DATE(createTime) >= '2015-9-6 00:00:00';
????select * from simingpai where DATE(createTime) >= '2015-9-6 00:00:01';
????select * from simingpai where DATE(createTime) >= '2015-9-6 18:15:00';
???????????????????TIMESTAMP????????????DATE????????????????????????????????????????????????????????????????????????????????????
????select * from simingpai where TIMESTAMP(createTime) >= 2015-9-6;
????select * from simingpai where TIMESTAMP(createTime) >= 2015-9-6 00:00:00;
????select * from simingpai where TIMESTAMP(createTime) >= 2015-9-6 18:15:00;
????select * from simingpai where Date(createTime) >= 2015-9-6;
????select * from simingpai where DATE(createTime) >= 2015-9-6 00:00:00;
????select * from simingpai where DATE(createTime) >= 2015-9-6 00:00:01;
????select * from simingpai where DATE(createTime) >= 2015-9-6 18:15:00;
?????????SQL?????TIMESTAMP?????DATE????????????????????????????????????????????ò?????????