hive基础概念总结(1)

1.关于内部表和外部表

表（内部表）数据存放在统一的/user/hive/warehouse目录下； drop表时会将表的数据及表的元信息全部清空。

示例代码如下：

1 CREATE TABLE page_view(viewTime INT, userid BIGINT,  
2      page_url STRING, referrer_url STRING,  
3      ip STRING COMMENT 'IP Address of the User')  
4  COMMENT 'This is the page view table'  
5  PARTITIONED BY(dt STRING, country STRING)  
6  ROW FORMAT DELIMITED  
7  FIELDS TERMINATED BY '\001'  
8 STORED AS SEQUENCEFILE;  

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