数据操作

向表中装载数据

OVERWRITE关键字，加上的话会先删除数据在进行加入，如果不加的话，相当于append数据。

LOAD DATA LOCAL INPTH '${env:HOME}/california-employees'
OVERWRITE INTO TABLE employees
PARTITION (country = 'US', state = 'CA');

通过查询语句向表中插入数据

INSERT OVERWRITE TABLE employees
PARTITION (country = 'US',state = 'OR')
SELECT * FROM staged_employees se
WHERE se.enty = 'US' AND se.st = 'OR';

单个查询语句中创建表并加载数据

CREATE TABLE ca_employees
AS SELECT name, salary, address
FROM employees
WHERE se.state = 'CA';