不需要每個分區都需加上,只需要如下:
1、alter table user_monthly_detail_i_m add columns (test string) cascade
cascade關鍵字即可
2、insert owerwrite table user_monthly_detail_i_m add partition (dt='20181127') select * from tmp
3、select * from user_monthly_detail_i_m where dt='20181127' limit 10;
4、alter table user_monthly_detail_i_m drop partition (dt='20171127')
5、修復表 msck repair table user_monthly_detail_i_m
6、即可