1)进入HBase客户端命令行
[drift@hadoop102 hbase]$ bin/hbase shell
2)查看帮助命令
hbase(main):001:0> help
3)查看当前数据库中有哪些表
hbase(main):002:0> list
1)创建表
hbase(main):002:0> create 'student','info'
2)插入数据到表
hbase(main):003:0> put 'student','1001','info:sex','male'
hbase(main):004:0> put 'student','1001','info:age','18'
hbase(main):005:0> put 'student','1002','info:name','Janna'
hbase(main):006:0> put 'student','1002','info:sex','female'
hbase(main):007:0> put 'student','1002','info:age','20'
3)扫描查看表数据
hbase(main):008:0> scan 'student'
hbase(main):009:0> scan 'student',{STARTROW => '1001', STOPROW => '1001'}
hbase(main):010:0> scan 'student',{STARTROW => '1001'}
4)查看表结构
hbase(main):011:0> describe 'student'
5)更新指定字段的数据
hbase(main):012:0> put 'student','1001','info:name','Nick'
hbase(main):013:0> put 'student','1001','info:age','100'
6)查看“指定行”或“指定列族:列”的数据
hbase(main):014:0> get 'student','1001'
hbase(main):015:0> get 'student','1001','info:name'
7)统计表数据行数
hbase(main):021:0> count 'student'
8)删除数据
删除某rowkey的全部数据:
hbase(main):016:0> deleteall 'student','1001'
删除某rowkey的某一列数据:
hbase(main):017:0> delete 'student','1002','info:sex'
9)清空表数据
hbase(main):018:0> truncate 'student'
提示:清空表的操作顺序为先disable,然后再truncate。
10)删除表
首先需要先让该表为disable状态:
hbase(main):019:0> disable 'student'
然后才能drop这个表:
hbase(main):020:0> drop 'student'
提示:如果直接drop表,会报错:ERROR: Table student is enabled. Disable it first.
11)变更表信息
将info列族中的数据存放3个版本:
hbase(main):022:0> alter 'student',{NAME=>'info',VERSIONS=>3}
hbase(main):022:0> get 'student','1001',{COLUMN=>'info:name',VERSIONS=>3}
内容来源于网络,如有侵权,请联系作者删除!