直接上語(yǔ)句：
SELECT
"t1".DATE_CREATED,
"t1".LAST_UPDATED,
"t1".CHARGING_CAPACITY,
((to_date(to_char("t1".LAST_UPDATED,'yyyy-MM-dd HH24:mi:ss'),'yyyy-mm-dd hh24:mi:ss')
-to_date(to_char("t1".DATE_CREATED,'yyyy-MM-dd HH24:mi:ss'),'yyyy-mm-dd hh24:mi:ss'))*24*60*60*1000) as CHARGE_TIME,
"t1".CHARGE_AMOUNT,
"t1".PLATE_NUMBER,
"t1".SELF_NUMBERING,
"t1".STATUS,
"t1".DATA_STATUS,
"t1".CHARGE_PILE_INFO_ID,
"t2".LINE,
"t2".FRAME_NUMBER,
"t2".OWNER_NAME,
"t2".ENTERPRISE_CODE
FROM
ET_CHARGE_PILE_DATA_INFO "t1",
cs_rc_db.V_TRRT_VEH_INFO@cs_rc_db_link "t2"
WHERE
"t1".SELF_NUMBERING = "t2".SELF_NUMBERING
AND "t2".FUEL_TYPE='3';
敲黑板；鞯小原在！
一定要先to_char 然后再to_date
