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CREATE table rob.d20200330
(
prem char(3) not null,
batch char(4) not null,
RDATE dec(8, 0) not null,
rtime dec(6, 0) not null
);
insert into rob.d20200330
values('100', 'MR07', 20181212, 100000)
;
insert into rob.d20200330
values('100', 'MR07', 20181212, 110000)
;
insert into rob.d20200330
values('100', 'MR07', 20181213, 100000)
;
insert into rob.d20200330
values('101', 'MR08', 20181212, 100000)
;
With t1 as (
select prem, batch, rdate, max(rtime) as rtime
from rob.d20200330
group by prem, batch, rdate)
select d.*
from t1 left join rob.d20200330 d
on t1.prem=d.prem and t1.batch=d.batch and t1.rdate=d.rdate and t1.rtime=d.rtime
;
Rob Berendt
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