hive常用命令

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日常用到hive sql做个总结

hive创建表

create table if not exists register
(
    user_id bigint,
    type string,
    s1 string,
    s2 string,
    s3 string,
    s4 string,
    stage int,
    from_id bigint
)partitioned by(dt string)
row format delimited fields terminated  by '\t' lines terminated by '\n';

 

 删除表

drop table register_daily

 

通过本地文件添加分区

hive -e "load data local inpath './reg_2013-07-25' overwrite into table register partition(dt='2013-07-25');"

 

删除分区

alter table register drop partition (dt='2013-07-25');

 

通过集群文件创建分区

alter table register add partition (dt='2013-07-25') location '/user/hive/warehouse/register_daily/dt=2013-07-25';               

 

表名重命名

alter table register rename to t_register_daily;

 

列名重命名,修改数据类型

 alter table t_register_daily change from_id fromid string;

 

添加新的列

alter table t_register_daily add columns (appid int);