在做数仓开发或指标开发时，是一个系统工程，要处理的问题非常多，经常使用到下面这些hive命令：
内部表转外部表
alter table ${tablename} set tblproperties (‘EXTERNAL’=True’);
外部表转内部表
alter table ${tablename} set tblproperties (‘EXTERNAL’=False’);
显示分区
show partitions ${tablename};
创建分区
alter table ${tablename} add if not exists partition(dt=’2022-11-08′)
删除分区
alter table ${tablename} drop partition(dt=’2022-11-21′)
修改分区
alter table ${tablename} partition(dt=’2022-11-08′) rename to partition(dt=’2022-11-21′)
获取table详细描述信息、存储格式等
desc formatted ${tablename}
修改hive表路径
alter table ${tablename} set location ‘${warehouse.dir}’
hive加载本地数据到分区表
load data local inpath ‘/tmp/test.txt’ into table ${tablename} partition (dt=’2022-11-08′);
加载本地目录的数据到分区表
load data inpath ‘/tmp’ into table ${tablename} partition (dt=’2022-11-08′);
排他锁解锁
set hive.support.concurrency=true;
set hive.txn.manager = org.apache.hadoop.hive.ql.lockmgr.DummyTxnManager;
设置session具有Admin权限
set role admin;
授予所有权限给某个用户
grant all on ${dbName} to user {userName};
查看指定用户在所有库下面的权限
show grant user {userName};
查看指定用户在某个库的权限
show grant user {userName} on database {dbName};
授予某个库的权限给某个用户
grant select on database {dbName} to user {userName};
grant insert on database {dbName} to user {userName};
grant update on database {dbName} to user {userName};
grant delete on database {dbName} to user {userName};
Hive赋予用户某表权限
grant create on database {dbName} to user {userName};
grant select on table 库名.表名 to user 用户名 ;
grant insert on table {dbName}.tableName to user {userName};
grant update on table {dbName}.tableName to user {userName};
grant delete on table {dbName}.tableName to user {userName};