select a.OP_FL_PLAN_KEY,
a.FLIGHT_NO,
a.ORIGIN,
a.DESTINATION,
a.SEG_DEP_DATE_TIME,
a.SEG_ARR_DATE_TIME,
a.DEP_DAY_CHG,
a.ARR_DAY_CHG,
decode(a.ac_type,'JET',c.AC_TYPE,a.ac_type)
a.AC_GRP, b.exp_lat_date_time,
b.imp_toa_date_time,
b.spl_code from
op_fl_plan a, op_fl_service_times b, op_ac_type c,
op_restriction d,
op_restriction_rq e
where a.op_fl_plan_key = b.op_fl_plan_key
and a.op_fl_plan_key = e.op_fl_plan_key
and b.op_fl_service_times_key = d.op_fl_service_times_key
and a.op_fl_plan_key = c.op_fl_plan_key
and b.exp_lat_date_time >= :eldt
and b.imp_toa_date_time <= :itdt
and b.spl_code in(:spl_code1, :spl_code2)
and b.service = :srv and a.origin = :o and a.destination = :d
and substr(a.flight_no, 1, 2) = :flight_no
and a.ac_grp in(:ac_grp)
and trunc(a.seg_dep_date_time) = :seg_dep_date
and e.spl_code in(:spl_code1, :spl_code2)
and d.spl_code not in(:spl_code1, :spl_code2)
and d.position in('E', 'I')
Regards,
�
Kamaljeet Singh (NCDB ASG)
MBT, 52 Barrack�Square, Martlesham. IP5 3RF.
Off. 01473 667170
Mob. 077 5368 5370
[EMAIL PROTECTED]
��
-----Original Message-----
Krishnaswamy, Ranganath
Sent: 10 March 2003 12:49
To: Multiple recipients of list ORACLE-L
Hi List,
I have the below query which is very long and it contains an
UNION
clause as the query has to select ac_type from op_ac_type table if
op_fl_plan.op-ac_type = 'JET' while it should select op_ac_type from
op_fl_plan table if op_fl_plan.ac_type = 'JET'. Is it possible to
rewrite
the query using DECODE statement or CASE statement or self joins to
return
the same result set? If so, please let me know the same. Any help in
this
regard is very much appreciated.
Thanks and Regards,
Ranganath
select a.OP_FL_PLAN_KEY,
a.FLIGHT_NO,
a.ORIGIN,
a.DESTINATION,
a.SEG_DEP_DATE_TIME,
a.SEG_ARR_DATE_TIME,
a.DEP_DAY_CHG,
a.ARR_DAY_CHG,
a.AC_TYPE,
a.AC_GRP, b.exp_lat_date_time,
b.imp_toa_date_time,
b.spl_code from
op_fl_plan a, op_fl_service_times b,
op_restriction d,
op_restriction_rq e
where a.op_fl_plan_key = b.op_fl_plan_key
and a.op_fl_plan_key = e.op_fl_plan_key
and b.op_fl_service_times_key = d.op_fl_service_times_key
and a.ac_type <> 'JET'
and b.exp_lat_date_time >= :eldt
and b.imp_toa_date_time <= :itdt
and b.spl_code in(:spl_code1, :spl_code2)
and b.service = :srv and a.origin = :o and a.destination = :d
and substr(a.flight_no, 1, 2) = :flight_no
and a.ac_grp in(:ac_grp)
and trunc(a.seg_dep_date_time) = :seg_dep_date
and e.spl_code in(:spl_code1, :spl_code2)
and d.spl_code not in(:spl_code1, :spl_code2)
and d.position in('E', 'I')
union
select a.OP_FL_PLAN_KEY,
a.FLIGHT_NO,
a.ORIGIN,
a.DESTINATION,
a.SEG_DEP_DATE_TIME,
a.SEG_ARR_DATE_TIME,
a.DEP_DAY_CHG,
a.ARR_DAY_CHG,
c.AC_TYPE,
a.AC_GRP, b.exp_lat_date_time,
b.imp_toa_date_time,
b.spl_code from
op_fl_plan a, op_fl_service_times b, op_ac_type c,
op_restriction d,
op_restriction_rq e
where a.op_fl_plan_key = b.op_fl_plan_key
and a.op_fl_plan_key = e.op_fl_plan_key
and b.op_fl_service_times_key = d.op_fl_service_times_key
and a.op_fl_plan_key = c.op_fl_plan_key
and a.ac_type = 'JET'
and b.exp_lat_date_time >= :eldt
and b.imp_toa_date_time <= :itdt
and b.spl_code in(:spl_code1, :spl_code2)
and b.service = :srv and a.origin = :o and a.destination = :d
and substr(a.flight_no, 1, 2) = :flight_no
and a.ac_grp in(:ac_grp)
and trunc(a.seg_dep_date_time) = :seg_dep_date
and e.spl_code in(:spl_code1, :spl_code2)
and d.spl_code not in(:spl_code1, :spl_code2)
and d.position in('E', 'I')
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Author: Krishnaswamy, Ranganath
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--
Author: Kamaljeet Singh
INET: [EMAIL PROTECTED]
Fat City Network Services -- 858-538-5051 http://www.fatcity.com
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