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ID TYPE Date Status
21489 RECHECK 20180928 2
21489 REGRADE 20180418 2
21489 REPAIR 20190102 0
Key in file is ID,TYPE,Date
The previous record in ID / TYPE sequence would be 21489 RECHECK.
So - what about this:
select t1.*, t2.*
from FILE t1
left join lateral (
select t2.* from FILE t2
where t1.id = t2.id
and t2.type < 'REPAIR'
order by id, type, date
fetch first row only) as t2 on 1 = 1
where t1.type = 'REPAIR'
t2.* should have your previous values in.
regards,
Craig
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This thread ...
RE: [EXTERNAL] Re: sql equivalent to chain and readpe, (continued)
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