-- 内部表
create table aa(col1 string,col2 int) partitioned by(statdate int) ROW FORMAT DELIMITED FIELDS TERMINATED BY '\t'； -- 外部表 create external table bb(col1 string, col2 int) partitioned by(statdate int) ROW FORMAT DELIMITED FIELDS TERMINATED BY '\t' location '/user/gaofei.lu/';
2- Check the create table statement
show create table tablename;
3- Import table data
本地数据：load data local inpath ' /home/gaofei.lu/aa.txt' into table aa partition(statdate=20170403) hdfs上数据：load data inpath '/user/gaofei.lu/aa.txt' into table bb partition(statdate=20170403)
Table 4- Properties Modify
alter table aa set tblproperties ('EXTERNAL'='TRUE') alter table bb set tblproperties ('EXTERNAL'='FALSE')
5- modify columns
修改列名和列数据类型：alter table aa change col2 name string ;
修改位置放置第一位：alter table aa change col2 name string first; 修改位置指定某一列后面：alter table aa change col1 dept string after name;
6- add columns (caution)
alter table aa add columns(col3 string);
7-epi rename
alter table aa rename to aa_test;
8- add a partition
alter table aa add partition(statdate=20170404); alter table bb add partition(statdate=20170404) location '/user/gaofei.lu/20170404.txt';
9- Partition Table View
show partitioins aa;
10- modify the partition
alter table aa partition(statdate=20170404) rename to partition(statdate=20170405); alter table bb partition(statdate=20170404) set location '/user/gaofei.lu/aa.txt';
11- to delete the partition
alter table aa drop if exists partition(statdate=20170404);
12- beeline connection
beeline !connect jdbc:hive2://192.168.1.17:10000
13- Set hive on spark
set hive.execution.engine=spark
14- terminate the task
yarn application -kill job_id
15 specify the delimiter export file
insert overwrite local directory '/home/hadoop/gaofeilu/test_delimited.txt'
row format delimited
fields terminated by '\t' select * from test;