Mi è stata fornita una query Oracle e sto cercando di tradurla su linq. Ho avuto successo fino alla selezione interiore.
select distinct pm.projNumber, nvl(s.submission_nbr, ppo.submission_nbr) submission_nbr, nvl(ot.objectname, pot.objectname) objectname , wa.assigned, f.lname, f.fname
from wfassignment wa
join CodeTab c on c.codeid = wa.appr_stat
join projobject po on po.objectid = wa.objectid
join projmain pm on pm.projid = po.projid
join hhistory s on s.Prop_no = pm.Prop_No and s.Inst_Code = pm.Inst_Code and pm.System = "foo" and s.mark = po.mark
left join objecttypes ot on ot.objecttype = po.objecttype and ot.system = pm.system
left join(
select a.mark, a.objecttype, a.submitdate, c.submission_nbr
from projobject a
join b on b.projid = a.projid
join c on c.Prop_no = b.Prop_No and c.Inst_Code = b.Inst_Code and b.System = "foo" and c.mark = a.mark ) ppo on ppo.mark = s.parentmark
left join objecttypes pot on pot.objecttype = ppo.objecttype and pot.system = pm.system
join faculty f on f.unique_id = wa.unique_id
where wa.completed is null and wa.unique_id in ("foo", "bar", "foo", "bar")
sotto c'è il mio codice C # fino a "left join (seleziona ...)"
var pageObject = (
from wa in db.WFASSIGNMENTs
join c in db.CODETABs on wa.APPR_STAT equals c.CODEID
join po in db.PROJOBJECTs on wa.OBJECTID equals po.OBJECTID
join pm in db.PROJMAINs on po.PROJID equals pm.PROJID
join s in db.HHISTORies on new { pm.PROP_NO, pm.INST_CODE, po.MARK } equals new { s.PROP_NO, s.INST_CODE, s.MARK }
join ot in db.OBJECTTYPES on new { OBJECTTYPE = po.OBJECTTYPE, pm.SYSTEM } equals new { OBJECTTYPE = ot.OBJECTTYPE1, ot.SYSTEM }
Come posso tradurre la selezione interna in linq?
risposte:
1 per risposta № 1Ho tirato fuori la selezione interna in un'altra variabile e mi sono unito a quella variabile. Ha fatto il trucco