Upgrade to 23.02.18 | stuck query

SELECT

 case when (NVL(TAUOK,0) + TAUFAILURES + NVL(TAUUNKNOWN_COUNT,0)) > 0 then

 case when (NVL(TAUOK,0) + TAUFAILURES + NVL(TAUUNKNOWN_COUNT,0))  > TAUFAILURES then ( TAUFAILURES / (NVL(TAUOK,0) + TAUFAILURES + NVL(TAUUNKNOWN_COUNT,0)))*100

 else 100 end else 0 end exp1,

       exp2 exp2

FROM 

(       

 SELECT Sum( LTECTCellStats.TAUOK ) TAUOK,

              Sum( LTECTCellStats.TAUFAILURES ) TAUFAILURES,

              Sum( LTECTCellStats.TAUUNKNOWN_COUNT ) TAUUNKNOWN_COUNT,

              Sum( LTECTCellStats.TAUFAILURES ) exp2

       FROM   (SELECT TAUFAILURES, TAUOK, TAUUNKNOWN_COUNT

               FROM LTE_SPOT_CELLSTATS_HOURLY s

               WHERE (s.date >= DATE('2026-03-04') AND s.hour >= 2)

                 AND (s.date <= DATE('2026-03-04') AND s.hour <= 23)

                 AND ServingSectorHandle IN (376238616)  AND DeviceID IN (4, 7) ) LTECTCellStats) subquery 

       WHERE  nvl(TAUFAILURES,0) > 0