Hive分区

5、添加分区

ALTER TABLE table_name ADD PARTITION (dt= ‘$dt‘) location ‘$dt‘;

ALTER TABLE table_name ADD IF NOT EXISTS PARTITION (dt=‘$dt‘) LOCATION ‘/sss/$dt‘; //一次添加一个分区

ALTER TABLE table_name ADD PARTITION (dt=‘$dt‘, hour=‘$hour‘) location ‘/path/$dt/$hour  PARTITION (dt=‘$dt‘,  hour=‘$hour‘) location ‘/path/$dt/$hour‘;  //一次添加多个分区

6\删除分区

ALTER TABLE table_name DROP IF EXISTS PARTITION (dt=‘dt‘);
ALTER TABLE table_name DROP IF EXISTS PARTITION (dt=‘dt‘, hour=‘$hour‘);

修改分区
ALTER TABLE table_name PARTITION (dt=‘$dt‘) SET LOCATION "$path";
ALTER TABLE table_name PARTITION (dt=‘$dt‘) RENAME TO PARTITION (dt=‘$dt_yyyymmdd’);