HIVE技巧总结

1. 清空临时表

load data local inpath '/dev/null' overwrite into table TMP_METRICS_FLOW_LOG_DETAIL;

2. 插入数据

alter table web_user_view_stat drop partition(dt='${loadDate}');
alter table web_user_view_stat add partition(dt='${loadDate}');

insert overwrite table web_pv_log_detail3 partition (dt='${loadDate}') select...