以下の Teradata クエリは、完了するまでに約 18 秒かかります。IN 句で渡された強調表示された値は別の Oracle データベースからのものであるため、そのテーブルとの結合を実装できません。
SELECT distinct sec.SerialNum esn, ef.EngineFamilyCd family, em.EngineModelCd model,
es.EngineSeriesCd series, sac.AircraftTailNum tailNumRef, sec.EnginePositionNum enginePosition,
o1.OrganizationId ownerOrgId, o2.OrganizationId operatorOrgId,
sec.EngineInstallationDttm installedDate, sec.EngineRemovalDttm removalDate,
sec.HardwareConfigNm hardwareConfig, sec.EngineControlNm engineControl,
sec.ApplicationSelectorNm appSelector, sec.EngineMonitorInd engineMonitorInd,
sec.EngineThrustRatingFctr engineThrustRating, sec.StatusDesc engineStatus, sec.n1modifiernum n1modifier
FROM DB_MASTER_BV.SZEngineCurrent sec,
DB_MASTER_BV.EngineSeries es,
DB_MASTER_BV.EngineModel em,
DB_Master_BV.EngineFamily ef,
DB_MASTER_BV.SZAircraftCurrent sac,
DB_MASTER_BV.Organization o1,
DB_MASTER_BV.Organization o2
WHERE sec.EngineSeriesCd = es.EngineSeriesCd
and es.EngineModelCd = em.EngineModelCd
and em.EngineFamilyCd = ef.EngineFamilyCd
and sec.MasterAircraftId = sac.MasterAircraftId
and o1.MasterOrganizationId = sec.OwnerMasterOrganizationId
and o2.MasterOrganizationId = sec.OperatorMasterOrganizationId
AND (sec.SerialNum in('733276','193283','690168','741471','876374','873383','193386','906397','804314','900116','785670','900399','724321','193488','811373','779917','193699','994688',
'779410','575169','A59299','900206','193297','575484','896359','367230','810105','876485','906385','876484','707149','811222','706801','193596','731949','697881',
'889697','804626','575194','707159','706129','900230','900231','706834','811352','900229','785748','193460','888221','906272','906266','906264','906263','994356',
'194431','731966','892417','811341','577413','741572','575564','889262','706956','876157','900257','900153','706958','706957','960436','892429','892427','900354',
'697138','645655','193352','994337','707189','697833','959190','900246','811317','577437','193643','697976','890692','193229','965579','900137','900135','894897',
'697723','193363','193367','785505','907077','959184','811311','706526','577302','706529','994332','702792','706663','779834','731931','960127','193371','876183',
'741563','193235','803843','577320','994318','907087','741460','907086','959170','994462','900464','193626','877503','643711','811202','811201','704585','193504',
'193500','875246','704876','725834','699783','699780','802380','900304','706885','906191','577773','959152','872574','811435','697388','699381','892485','577698',
'907035','811445','907039','894999','894857','894595','697273','894597','959139','577894','874898','706959','900424','193337','577697','907011','875696','699555',
'699554','575629','906149','906150','193452','962968','811264','811266','962970','875395','699543','575638','906153','857962','896247','858349','779746','906161',
'906928','802857','779640','193424','550309','424520','550305','575608','872517','906169','892196','811386','811385','906173','907220','959234','876666','959231',
'876662','893785','875914','802649','550218','550315','906111','741984','550319','906405','906501','550118','643371','785254','550116','550117','802946','906629',
'907145','550325','550324','906837','550320','906838','702591','550220','550227','906415','690289','906517','704416','731431','550125','959201','906413','994176',
'550333','550140','550337','891651','550141','550338','906746','907269','550132','550137','550138','892914','550342','906123','550153','550345','950923','906129',
'873188','906850','906953','690270','890713','645352','893127','697590','874826','424439','893126','907110','550144','856305','690269','892824','550256','550257',
'906867','907186','960852','720754','960851','906866','888607','805573','811530','960756','872352','550266','550267','550264','811518','888896','906730','994958',
'892247','960970','875186','906987','424124','550232','A59303','702660','875885','811609','888626','424219','906897','994981','731502','697496','695345','962996',
'894371','907153','805541','907154','424337','906613','906615','900512','906610','956141','994611','804582','994718','888648','575219','888756','896973','424395',
'872117','A59227','697616','731380','697614','900161','690410','994213','956155','956154','779492','994231','702876','577248','994727','193818','890879','722243',
'906499','577354','888560','645121','896972','960823','804279','900175','888853','193724','550285','550282','906469','994803','906466','888299','877141','890984',
'695688','994533','888327','A59348','A59346','994410','733116','550296','550290','550292','906478','731763','725658','896408','645145','994751','731654','740358',
'906441','550158','193849','906543','906448','994262','575824','424186','906345','643663','888305','906243','906244','702963','906453','906452','956119','906451',
'956116','950489','550166','906454','367457','896764','575833','994268','906252','994127','733236','906258','956123','550178','994777','956126','956127','956128',
'906786','906788','906687','643290','994631','956225','994632','888574','906365','804228','731599','643682','550182','804369','994784','550186','550183','888826',
'575127','906439','890482','906438','906691','890472','994509','193147','575718','804215','575276','994793','897257'))
and END(sec.EngineValidPd) is until_changed
order by esn
また、1000 を超えるレコードがある場合、次のように IN 句を実装しています AND (sec.SerialNum in(最初の 999 レコード) OR sec.SerialNum in(次の 999 レコード)… OR sec.SerialNum in(残りのレコード))上記のクエリよりも高速であり、IN 句で 1000 を超えるレコードで問題が発生しない解決策を提案します