oracle 根據時間字段查詢數據
ROWNUM 是對前面查詢的記錄做限制，比如查詢的記錄 > 2000 條，那么只取前面的 2000 條
'''
SELECT * FROM
(SELECT CLXXBH, JGSK, CDBH, HPHM, HPYS, SBBH, KKMC, WD, JD, CLLX, CSYS, HPZL, CLSD, WFXW, HPTP, QJTP, RKSJ, XSFX, KKID
FROM WFXX.WFXX
WHERE RKSJ >= TO_DATE('%s', 'YYYY/MM/DD HH24:MI:SS')
AND RKSJ < TO_DATE('%s', 'YYYY/MM/DD HH24:MI:SS')
ORDER BY RKSJ)
WHERE ROWNUM <= 2000
'''