tsql - Trying to convert a "not in" statement to a "not exists" -- I've looked at related questions but still can't get it to work -


i've got simple query ex-boss left me with. it's using not in takes enormous amount of time (and reasons yet determined have caused failover on server running 1 database). i've tried change not exists , i'm getting 0 records returned. realize has simple there absolutely no 1 here has clue i'm talking about.

here's query:

declare @callback table (prospectrelationcode varchar(1), callbackavail int) insert @callback  select opp.ppc prospectrelationcode, sum(case when dl.category = 'refusal'      1 else 0 end) callbackavail  callresult cr join opportunity opp on opp.id = cr.id join dbo.dispositionlookup dl on dl.lookupkey = cr.callstatus dl.category = 'refusal' , opp.assignment not in ( select assignment callresult cr  join opportunity opp on opp.id = cr.id cr.callstatus in ('vvol','rvol')  ) ,  opp.listid >= 1400 group opp.ppc

here (slight) rework:

select     opp.ppc prospectrelationcode,     sum(case when dl.category = 'refusal'          1 else 0     end) callbackavail  callresult cr join opportunity opp     on opp.id = cr.id join dbo.dispositionlookup dl     on dl.lookupkey = cr.callstatus dl.category = 'refusal' , not exists  ( select opp.assignment  callresult cr join opportunity on cr.id = opp.id  cr.callstatus in ('vvol','rvol')  ) ,  opp.listid >= 1400 group opp.ppc

this piece of cake i'm hitting brick wall here. i'd appreciate whatsoever (and i'm prepared yelling @ me also).

thank you! diane

there's need subquery because joins data in same way first join statement. since data not in subquery. move subquery's clause , negate so:

declare @callback table (     prospectrelationcode varchar(1)     ,callbackavail int     )  insert @callback select opp.ppc prospectrelationcode     ,sum(case              when dl.category = 'refusal'                 1             else 0             end) callbackavail callresult cr inner join opportunity opp on opp.id = cr.id inner join dbo.dispositionlookup dl on dl.lookupkey = cr.callstatus   dl.category = 'refusal'         , cr.callstatus != 'vvol'         , cr.callstatus != 'rvol'         , opp.listid >= 1400 group opp.ppc

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