我在 Oracle 中创建了一个选择,它返回机组人员每月的过夜停留次数(如果有的话):
CRE_ALPHA CRE_NAME MONTH YEAR NIGHT_STOPS
---------- --------- ------ ----- ------------
AAC Adinda 6 2013 8
AAC Adinda 7 2013 9
AAC Adinda 8 2013 2
AAC Adinda 9 2013 7
AAC Adinda 10 2013 4
CCU Cristiano 6 2013 5
CCU Cristiano 7 2013 6
CCU Cristiano 8 2013 3
CCU Cristiano 9 2013 11
CVA Carine 7 2013 9
CVA Carine 9 2013 10
CVA Carine 10 2013 10
现在,每 3 个月有 18 晚停留的限制。因此,我想按连续 3 个月有 > 18 晚停留的时间进行分组。结果应该是这样的:
CRE_ALPHA CRE_NAME TIMESPAN NIGHT_STOPS
---------- --------- --------------- ------------
AAC Adinda 6/2013-8/2013 19
AAC Adinda 7/2013-9/2013 18
CCU Cristiano 7/2013-9/2013 20
CVA Carine 7/2013-9/2013 19
CVA Carine 8/2013-10/2013 20
请注意,如果一个月的夜间停留次数为零,则没有行,但我想要 3 个月的结果,包括 0 的结果。
有人可以帮忙吗?
如果它可以帮助,下面的完整选择:
ALTER SESSION SET NLS_DATE_FORMAT = 'DD-MM-YYYY hh24:mi:ss';
SELECT cre_id, cre_alpha, cre_first_name, cre_last_name, Maand, Jaar, count(*) "Night stops"
FROM
(SELECT cre_id, cre_alpha, cre_first_name, cre_last_name, pos_crb_iata_code, dst, det, dsa, (dst - Prev_end_time) * 1440 stop_over, EXTRACT(MONTH FROM dst) Maand, EXTRACT(YEAR FROM dst) Jaar
FROM
(SELECT cre_id, cre_alpha, cre_first_name, cre_last_name, pos_crb_iata_code, dst, dsa, det, dea, LAG(det) OVER (ORDER BY cre_alpha, dst) Prev_end_time
FROM
(SELECT cre_id, cre_alpha, cre_first_name, cre_last_name, pos_crb_iata_code,
COALESCE(flt_mvt_db, flt_com_dep_blk, pog_std, gco_start, oth_std, rsv_std) as dst,
COALESCE(flt_mvt_ab, flt_com_arr_blk, pog_sta, gco_end, oth_sta, rsv_sta) as det,
COALESCE(flt_apt_iata_code_dep, pog_apt_iata_code_from, gco_apt_iata_code, rsv_apt_iata_code) as dsa,
COALESCE(flt_apt_iata_code_arr, pog_apt_iata_code_to, gco_apt_iata_code, rsv_apt_iata_code) as dea
FROM
(SELECT DISTINCT cre_id, cre_alpha, cre_first_name, cre_last_name, pos_crb_iata_code
FROM master.crews, master.assignments, master.positions
WHERE asg_pos_id = pos_id AND asg_cre_id = cre_id AND asg_d_type <> 'LEA'
AND asg_start_time BETWEEN '01-JUN-2013' AND '01-NOV-2013'
ORDER BY cre_alpha) tab1, master.assignments
FULL OUTER JOIN master.flights ON master.assignments.asg_flt_id = master.flights.flt_id
FULL OUTER JOIN master.positionings ON master.assignments.asg_pog_id = master.positionings.pog_id
FULL OUTER JOIN master.ground_courses ON master.assignments.asg_gco_id = master.ground_courses.gco_id
FULL OUTER JOIN master.other_duties ON master.assignments.asg_oth_id = master.other_duties.oth_id
FULL OUTER JOIN master.reserves ON master.assignments.asg_rsv_id = master.reserves.rsv_id
WHERE asg_d_type <> 'LEA' AND asg_d_type <> 'STP' AND asg_cre_id = tab1.cre_id
AND asg_start_time BETWEEN '01-JUN-2013' AND '02-NOV-2013' AND asg_actif = 'Y'
ORDER BY cre_alpha, asg_start_time)
)
WHERE pos_crb_iata_code <> dsa
AND EXTRACT(DAY FROM dst) - EXTRACT(DAY FROM Prev_end_time) >= 1)
WHERE stop_over > 240
GROUP BY cre_id, cre_alpha, cre_first_name, cre_last_name, Maand, Jaar
ORDER BY cre_alpha;