Steffen Mangold <steffen.mang...@balticsd.de> wrote:
> I try to update a table field with a selected value from same tabel. Is this 
> possible?
> What I try yet is:
> update TableA Set FieldA  = (select FieldB from TableA where IDField = 
> updateData.IDField AND TimeStamp =
> date(updateData.TimeStamp, '-1 day')); 
> 
> I want to update the FieldA with FieldB one day earlyer, where IDField is the 
> same.

update TableA set FieldA = (
    select FieldB from TableA t
    where t.IDField = TableA.IDField and
    t.TimeStamp = date(TableA.TimeStamp, '-1 day')
);

-- 
Igor Tandetnik

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