HBase---HBase基础语法

HBase基础语法

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基本操作

进入 HBase 客户端命令行

[root@hadoop ~]# hbase shell

查看命名空间

hbase(main):001:0> list_namespace

查看命名空间下的表

hbase(main):002:0> list_namespace_tables 'default'

创建命名空间

hbase(main):003:0> create_namespace 'bigdata'

创建表

表中有两个列族 baseinfo, schoolinfo

hbase(main):005:0> create 'bigdata:student','baseinfo','schoolinfo'

查看表描述

hbase(main):006:0> desc 'bigdata:student'
# 或者
describe 'bigdata:student'

禁用/启用

# 禁用
hbase(main):008:0> disable 'bigdata:student'
#查看是否禁用
hbase(main):010:0> is_disabled 'bigdata:student'

#启用
hbase(main):012:0> enable 'bigdata:student'
#查看是否启用
hbase(main):013:0> is_enabled 'bigdata:student'

删除表

注意:首先要将删除的表设置为禁用状态才可以删除，否则会报错

hbase(main):008:0> disable 'bigdata:student'
hbase(main):022:0> drop 'bigdata:student'

新增列族

hbase(main):014:0> alter 'bigdata:student','teacherinfo'

删除列族

hbase(main):016:0> alter 'bigdata:student',{NAME=>'teacherinfo',METHOD=>'delete'}

更改列族存储版本的限制

hbase(main):033:0> alter 'bigdata:student',{NAME=>'baseinfo',VERSIONS=>3}

put 增加数据

put 'bigdata:student','rowkey1','baseinfo:name','tom'
put 'bigdata:student','rowkey1','baseinfo:birthday','1999-01-01'
put 'bigdata:student','rowkey1','baseinfo:age','24'
put 'bigdata:student','rowkey1','schoolinfo:name','aaa'
put 'bigdata:student','rowkey1','schoolinfo:address','jsxueyuan'put 'bigdata:student','rowkey2','baseinfo:name','jerry'
put 'bigdata:student','rowkey2','baseinfo:birthday','2003-07-02'
put 'bigdata:student','rowkey2','baseinfo:age','20'
put 'bigdata:student','rowkey2','schoolinfo:name','bbb'
put 'bigdata:student','rowkey2','schoolinfo:address','guangzhou'put 'bigdata:student','rowkey3','baseinfo:name','mands'
put 'bigdata:student','rowkey3','baseinfo:birthday','2022-05-21'
put 'bigdata:student','rowkey3','baseinfo:age','1'
put 'bigdata:student','rowkey3','schoolinfo:name','ccc'
put 'bigdata:student','rowkey3','schoolinfo:address','bj'put 'bigdata:student','rowkey4','baseinfo:name','roboot'
put 'bigdata:student','rowkey4','baseinfo:birthday','2018-12-31'
put 'bigdata:student','rowkey4','baseinfo:age','5'
put 'bigdata:student','rowkey4','schoolinfo:name','ddd'
put 'bigdata:student','rowkey4','schoolinfo:address','shanghai'

get 查看数据

hbase(main):038:0> get 'bigdata:student','rowkey1'
hbase(main):039:0> get 'bigdata:student','rowkey2'
hbase(main):040:0> get 'bigdata:student','rowkey3'
hbase(main):041:0> get 'bigdata:student','rowkey4'

get条件查询

hbase(main):001:0> get 'bigdata:student','rowkey2','baseinfo'
hbase(main):002:0> get'bigdata:student','rowkey2','schoolinfo'

hbase(main):001:0> get 'bigdata:student','rowkey2','baseinfo:name'

hbase(main):002:0> get 'bigdata:student','rowkey3',{COLUMN=>'baseinfo:name'}

删除指定列族下的指定列

hbase(main):003:0> delete 'bigdata:student','rowkey3','baseinfo:age'

删除指定行

hbase(main):004:0> deleteall 'bigdata:student','rowkey3'

全表扫描

hbase(main):005:0> scan 'bigdata:student'

全表扫描指定列族

hbase(main):006:0> scan 'bigdata:student',COLUMN=>'baseinfo'

全表扫描指定列族指定列

hbase(main):007:0> scan 'bigdata:student',COLUMN=>'baseinfo:birthday'

扫描指定起始行至结束行(不包含)

hbase(main):008:0> scan 'bigdata:student',{COLUMN=>'baseinfo:name',STARTROW=>'rowkey1',STOPROW=>'rowkey4'}

值包含

hbase(main):009:0> scan 'bigdata:student',FILTER=>"ValueFilter(=,'substring:aaa')"

值=

hbase(main):010:0> scan 'bigdata:student',FILTER=>"ValueFilter(=,'binary:24')"

以birth开头的

hbase(main):011:0> scan 'bigdata:student',FILTER=>"ColumnPrefixFilter('birth')"

以birth开头且值中包含2003

hbase(main):014:0> scan 'bigdata:student',FILTER=>"ColumnPrefixFilter('birth') AND ValueFilter(=,'substring:2003')"

以birth开头且值中包含2003 或者1999

hbase(main):018:0> scan 'bigdata:student',FILTER=>"ColumnPrefixFilter('birth') AND (ValueFilter(=,'substring:2003') OR ValueFilter(=,'substring:1999'))"![在这里插入图片描述](https://img-blog.csdnimg.cn/3ee9e7eb297f4f90aaef3835e7f58433.png)