最近我遇到的情况是，如果记录的最小和最大日期不在同一个日期，我想在不同的日期显示一条记录，到目前为止我已经尝试了这两个查询但是一个查询需要很长时间和另一个查询不显示所有记录。两个查询都是。 查询1（花费很长时间）：
select ((b.starttime+b.srlno) -1 ) datevals, to_char(((b.starttime+b.srlno) -1 ),'mm/dd/yyyy') dateval,
extract(YEAR FROM (b.starttime+b.srlno)-1 ) eyear,
extract(MONTH FROM (b.starttime+b.srlno)-1 )-1 emonth,
extract(day from (b.starttime+b.srlno)-1 )-0 eday,
b.* from (select ROW_NUMBER( ) OVER (PARTITION BY
a.id ORDER BY a.starttime NULLS LAST) SRLNO ,
a.* from (select rr.id, rr.title ,min(rrd.starttime) starttime,
max(rrd.endtime) endtime,
to_char(min(rrd.starttime),'mm/dd/yyyy') startDate,
to_char(min(rrd.starttime),'fmHH:fmMI am') displaytime
-- JavaRoomBookingAPI.getCisnumber(rr.event_id) cisNumber
-- JavaRoomBookingAPI.getroomName(rr.id,rrd.room_id) roomName
from roomreservation rr, roomreservationdetails rrd,room r
Where rrd.roomreservation_id = rr.id
and rrd.room_id= r.id and rr.CANCELFLAG <> 1
and nvl(rrd.setuptime, rrd.starttime) != nvl(rrd.breakdowntime, rrd.endtime)
and rrd.starttime != rrd.endtime
group by rr.id, rr.title
--JavaRoomBookingAPI.getCisnumber(rr.event_id)
-- JavaRoomBookingAPI.getroomName(rr.id,rrd.room_id)
having To_Date('11/01/2019 12:00 AM','MM/DD/YYYY HH:Mi AM') BETWEEN min(RRD.STARTTIME ) and max(RRD.Endtime)
or
To_Date('11/30/2019 12:00 AM','MM/DD/YYYY HH:Mi AM') BETWEEN min(RRD.STARTTIME ) and max(RRD.Endtime)
or
min(RRD.STARTTIME ) BETWEEN To_Date('11/01/2019 12:00 AM','MM/DD/YYYY HH:Mi AM') and To_Date('11/30/2019 12:00 AM','MM/DD/YYYY HH:Mi AM')
or
max(RRD.ENDTIME ) BETWEEN To_Date('11/01/2019 12:00 AM','MM/DD/YYYY HH:Mi AM') and To_Date('11/30/2019 12:00 AM','MM/DD/YYYY HH:Mi AM')
order by rr.id
)a,
(SELECT rownum repeat FROM dual
CONNECT BY LEVEL<= (select ceil(trunc(max(endtime))-trunc(min(starttime))) from roomreservationdetails)
) r
where ceil(trunc(a.endtime)-trunc(a.starttime))+1 >= r.repeat
order by a.starttime,a.id) b order by datevals, b.title;
和2查询是（不显示所有记录）：
select ((b.starttime+b.srlno) -1 ) datevals, to_char(((b.starttime+b.srlno) -1 ),'mm/dd/yyyy') dateval,
extract(YEAR FROM (b.starttime+b.srlno)-1 ) eyear,
extract(MONTH FROM (b.starttime+b.srlno)-1 )-1 emonth,
extract(day from (b.starttime+b.srlno)-1 )-0 eday,
b.* from
(select ROW_NUMBER( ) OVER (PARTITION BY
a.id ORDER BY a.starttime NULLS LAST) SRLNO , a.* from
(select rr.id, rr.title ,min(rrd.starttime) starttime,
max(rrd.endtime) endtime,
to_char(min(rrd.starttime),'mm/dd/yyyy') startDate,
to_char(min(rrd.starttime),'fmHH:fmMI am') displaytime,
JavaRoomBookingAPI.getCisnumber(rr.event_id) cisNumber,
JavaRoomBookingAPI.getroomName(rr.id,rrd.room_id) roomName
from roomreservation rr, roomreservationdetails rrd,room r
Where rrd.roomreservation_id = rr.id
and rrd.room_id= r.id and rr.CANCELFLAG <> 1 and
(
decode(to_char(rrd.starttime,'hh:mi am'),'12:00 am',rrd.starttime + 1/1440,rrd.starttime) between
(To_Date('11/01/2019 12:00 AM','MM/DD/YYYY HH:Mi AM')) And
(To_Date('11/30/2019 11:59 PM','MM/DD/YYYY HH:Mi AM'))
or
decode(to_char(rrd.endtime,'hh:mi am'),'12:00 pm',rrd.endtime - 1/1440,rrd.endtime) between
(To_Date('11/01/2019 12:00 AM','MM/DD/YYYY HH:Mi AM')) And
(To_Date('11/30/2019 11:59 PM','MM/DD/YYYY HH:Mi AM'))
or
(To_Date('11/01/2019 12:00 AM','MM/DD/YYYY HH:Mi AM')) between
decode(to_char(rrd.starttime,'hh:mi am'),'12:00 pm',rrd.starttime + 1/1440,rrd.starttime)
And
decode(to_char(rrd.endtime,'hh:mi am'),'12:00 pm',rrd.endtime - 1/1440,rrd.endtime)
or
(To_Date('11/30/2019 11:59 PM','MM/DD/YYYY HH:Mi AM')) between
decode(to_char(rrd.starttime,'hh:mi am'),'12:00 pm',rrd.starttime + 1/1440,rrd.starttime)
And
decode(to_char(rrd.endtime,'hh:mi am'),'12:00 pm',rrd.endtime - 1/1440,rrd.endtime)
)
and nvl(rrd.setuptime, rrd.starttime) != nvl(rrd.breakdowntime, rrd.endtime)
and rrd.starttime != rrd.endtime
group by rr.id, rr.title,JavaRoomBookingAPI.getCisnumber(rr.event_id),JavaRoomBookingAPI.getroomName(rr.id,rrd.room_id)
order by rr.id) a,
(SELECT rownum repeat FROM dual
CONNECT BY LEVEL<= (select ceil(trunc(max(endtime))-trunc(min(starttime))) from roomreservationdetails
where (decode(to_char(starttime,'hh:mi am'),'12:00 am',starttime + 1/1440,starttime) between
(To_Date('11/01/2019 12:00 AM','MM/DD/YYYY HH:Mi AM')) And
(To_Date('11/30/2019 11:59 PM','MM/DD/YYYY HH:Mi AM')) or
decode(to_char(endtime,'hh:mi am'),'12:00 pm',endtime - 1/1440,endtime) between
(To_Date('11/01/2019 12:00 AM','MM/DD/YYYY HH:Mi AM')) And
(To_Date('11/30/2019 11:59 PM','MM/DD/YYYY HH:Mi AM'))
or
(To_Date('11/01/2019 12:00 AM','MM/DD/YYYY HH:Mi AM')) between
decode(to_char(starttime,'hh:mi am'),'12:00 pm',starttime + 1/1440,starttime)
And
decode(to_char(endtime,'hh:mi am'),'12:00 pm',endtime - 1/1440,endtime)
or
(To_Date('11/30/2019 11:59 PM','MM/DD/YYYY HH:Mi AM')) between
decode(to_char(starttime,'hh:mi am'),'12:00 pm',starttime + 1/1440,starttime)
And
decode(to_char(endtime,'hh:mi am'),'12:00 pm',endtime - 1/1440,endtime))
)) r
where ceil(trunc(a.endtime)-trunc(a.starttime))+1 >= r.repeat
order by a.starttime,a.id) b order by datevals, b.title;