sql server - a select statement that assigns a value to a variable must not be combined with data-retrieval -


for example had 1 variale @rev data retieval shown in query

"select distinct @accno,illness_id,desc_id,'lab',labname,lr.result,'positive','false',@sex

@rev=case when datediff(day,@admitdate,lr.labdatetime)<0 1 else datediff(day,@admitdate,lr.labdatetime) end

i wanna use variable in same select query clause as

l.labdatetime between @admitdate , dateadd(hh,24*@rev,@admitdate)

can var value there ..?

this error occurs when assigning column values select statement local variables not columns assigned corresponding local variable.

may can try way

select @rev=case when datediff(day,@admitdate,lr.labdatetime)<0 1 else datediff(day,@admitdate,lr.labdatetime) end select distinct @accno,illness_id,desc_id,'lab',labname,lr.result,'positive','false',@sex,@rev

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