Re: generated dates from record dates - suggestions
От | Oliveiros d'Azevedo Cristina |
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Тема | Re: generated dates from record dates - suggestions |
Дата | |
Msg-id | 90C447DC256446F3A7143ECD343F17C0@marktestcr.marktest.pt обсуждение исходный текст |
Ответ на | generated dates from record dates - suggestions (Gary Stainburn <gary.stainburn@ringways.co.uk>) |
Список | pgsql-sql |
With a CASE ... WHEN statement? Best, Oliver ----- Original Message ----- From: "Gary Stainburn" <gary.stainburn@ringways.co.uk> To: <pgsql-sql@postgresql.org> Sent: Monday, August 20, 2012 1:17 PM Subject: [SQL] generated dates from record dates - suggestions > Hi folks. > > I've got a table with three dates which are populated from an external > source. > I then want to have a view with two calculated dates in it, e.g. > > if date_1 is null and date_2 is null then date_a=NULL > if date_1 is not null and date 2 is null then date_a=date_1+'90 days' > if date_1 > date3 rhen date_b=date1 else date_b=date2 > etc. > > What's the best way to do this? > > I know it's a quite open question but I'm interested to hear different > responses > > > -- > Gary Stainburn > Group I.T. Manager > Ringways Garages > http://www.ringways.co.uk > > > -- > Sent via pgsql-sql mailing list (pgsql-sql@postgresql.org) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-sql
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