SQL “WHERE IN” query conversion to LINQ

Question

I\'m trying to find a way to convert this very complex SQL Query into LINQ and I can\'t seem to tackle all the embedded \"WHERE IN\" clauses. Would someone be so kind as to len

Answer 1

You convert the SQL IN statement to linq with either Contains or Any

Contains

from dv in db.Device
where
  (from au in db.Audit
  where au.AuditDate >= DateTime.Now.AddMonths(-3)
  select au.AccountID).Contains(dv.AccountID)

Any

from dv in db.Device
where 
   db.Audit.Any(au => au.AuditDate >= DateTime.Now.AddMonths(-3) && 
                au.AccountID == dv.AccountID)