MaxCompute建了一个OSS外部表 ， 后续新建的分区都读取不到是怎么回事？

MaxCompute建了一个OSS外部表 ，但是分区只能读到建表的时候的分区， 后续新建的分区都读取不到是怎么回事？是需要每天重新建外部表么 ？5月16号建的外部表，但是OSS里的分区已经建到了 21号 查询不到数据 是空的。CREATE EXTERNAL TABLE IF NOT EXISTS r5events(

evt_code STRING NOT NULL COMMENT 'Event Code',

evt_org STRING NOT NULL COMMENT 'Event Organization',

evt_desc STRING NOT NULL COMMENT 'Event Description',

evt_type STRING NOT NULL COMMENT 'Event User Type',

evt_rtype STRING NOT NULL COMMENT 'Event System Type',

evt_date TIMESTAMP NOT NULL COMMENT 'Event Date',

evt_status STRING NOT NULL COMMENT 'Event User Status',

evt_rstatus STRING NOT NULL COMMENT 'Event System Status',

evt_multiequip STRING COMMENT 'Event Multiple Equipment',

evt_object STRING COMMENT 'Event Object Code',

evt_object_org STRING COMMENT 'Event Equipment Org.',

evt_obtype STRING COMMENT 'Event Object User Type',

evt_obrtype STRING COMMENT 'Event Object System Type',

evt_location STRING COMMENT 'Event Location',

evt_location_org STRING COMMENT 'Event Location Org.',

evt_mrc STRING NOT NULL COMMENT 'Event Department',

evt_costcode STRING COMMENT 'Event Cost Code',

evt_class STRING COMMENT 'Event Class',

evt_class_org STRING COMMENT 'Event Class Org.',

evt_fixed STRING NOT NULL COMMENT 'Event Fixed',

evt_target TIMESTAMP COMMENT 'Event Sched. Start Date',

evt_duration BIGINT NOT NULL COMMENT 'Event Duration',

evt_parent STRING COMMENT 'Event Parent Event',

evt_depend STRING COMMENT 'Event Dependent (+/-)',

evt_origin STRING COMMENT 'Event Reported By',

evt_reported TIMESTAMP COMMENT 'Event Date Reported',

evt_reqm STRING COMMENT 'Event Problem Code',

evt_cause STRING COMMENT 'Event Cause Code',

evt_action STRING COMMENT 'Event Action Code',

evt_failure STRING COMMENT 'Event Failure Code',

evt_jobtype STRING COMMENT 'Event WO Type',

evt_priority STRING COMMENT 'Event Priority',

evt_start TIMESTAMP COMMENT 'Event Start Date',

evt_due TIMESTAMP COMMENT 'Event Original MP Due Date',

evt_completed TIMESTAMP COMMENT 'Event Date Completed',

evt_downtime BIGINT COMMENT 'Event Downtime Cost',

evt_shift STRING COMMENT 'Event Shift',

evt_warranty STRING NOT NULL COMMENT 'Event Warranty (+/-)',

evt_okwinend TIMESTAMP COMMENT 'Event OK Window End',

evt_nearwinstart TIMESTAMP COMMENT 'Event Near Window Start',

evt_genwinstart TIMESTAMP COMMENT 'Event Gen Window Start',

evt_okwinendval DOUBLE COMMENT 'Event OK Window End Val',

evt_routestatus STRING COMMENT 'Event Route Status',

evt_routerstatus STRING COMMENT 'Event Route System Status',

evt_rejectreason STRING COMMENT 'Event Reject Reason',

evt_enteredby STRING COMMENT 'Event Entered By',

evt_safety STRING COMMENT 'Event Safety (+/-)',

evt_objcriticality STRING COMMENT 'Event Criticality',

evt_ppopk BIGINT COMMENT 'Event PPO key',

evt_ppmrev BIGINT COMMENT 'Event MP revision',

evt_ppm STRING COMMENT 'Event MP Code',

evt_isstype STRING COMMENT 'Event MP Type',

evt_freq BIGINT COMMENT 'Event Frequency',

evt_route STRING COMMENT 'Event Route Code',

evt_routerev BIGINT COMMENT 'Event route 这是oss里分好的