连的orcale 想请教一下各位..这个SQL语句还有能优化的地方嘛..库里五六十万条记录+一张1100W条的表，加上前端传过来的条件也要20s+..查询结果返回的时候前端也已经异步返回了.查询结果不显示..
不知道有没有什么办法能让sql执行快一点，或者还是只能把前端ajax改成同步？
SELECT
CE.EQUIP_NUMBER AS devid,
CE.ENCURBANDISTRICT,
CE.ENCREGION,
CE.ENCBANK,
CE.ENCDOT,
se.TOTALDEPOSITAMOUNT,
se.TOTALWITHDRAWALAMOUNT,
se.TOTALDEPOSITLONGSHORT,
se.TOTALWITHDRAWALLONGSHORT,
to_char(to_date(se.EXDATE,'yyyy-mm-dd'),'yyyy-mm-dd')||' '||substr(se.EXTIME,0,2)||':'||substr(se.EXTIME,3,2)||':'||substr(se.EXTIME,5,2) AS nrdate,
se.RZ100,
se.RZ50,
se.RZ20,
se.RZ10,
se.RZ5,
se.RZ1,
se.RY10,
se.RY5,
se.RY1,
se.RCJ10,
se.RCJ5,
se.RCJ1,
se.CZ100,
se.CZ50,
se.CZ20,
se.CZ10,
se.CZ5,
se.CZ1,
se.CY10,
se.CY5,
se.CY1,
se.CCJ10,
se.CCJ5,
se.CCJ1 FROM
CFG_EQUIPINFO CE inner join
(SELECT
s.*,ROWNUM RN from
(SELECT x1.*,
row_number() over(partition by devid,to_char(to_date(x1.EXDATE,'yyyy-mm-dd'),'yyyy-mm-dd')||' '||substr(x1.EXTIME,0,2)||':'||substr(x1.EXTIME,3,2)||':'||substr(x1.EXTIME,5,2) order by to_char(to_date(x1.EXDATE,'yyyy-mm-dd'),'yyyy-mm-dd')||' '||substr(x1.EXTIME,0,2)||':'||substr(x1.EXTIME,3,2)||':'||substr(x1.EXTIME,5,2)) su
FROM
SN_ENCEXCHANGEINFO x1 where 1=1
) s
) se ON se.DEVID = CE.equip_number
where 1 = 1
and su=1
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