送分了啊!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
再问个问题,请问我怎么清除datatime相同的行
datatime value
2006-11-03 00:00:00 11936632.0
2006-11-03 01:00:00 11937032.0
2006-11-03 01:00:00 11937032.0
2006-11-03 02:00:00 11937433.0
2006-11-03 02:00:00 11937434.0
2006-11-03 03:00:00 11937827.0
2006-11-03 03:00:00 11937827.0
2006-11-03 04:00:00 0.0
2006-11-03 04:00:00 0.0
2006-11-03 05:00:00 11938615.0
2006-11-03 05:00:00 11938617.0
2006-11-03 06:00:00 11939008.0
2006-11-03 06:00:00 11939008.0
2006-11-03 07:00:00 0.0
2006-11-03 07:00:00 0.0