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  • Hbase shell操作表

    启动hbase shell

    ./bin/hbase shell

    1、创建表,查看表

    create 'tableName', 'familykey1','familykey2',....
       eg.
         create 'student','info','course'
    list #查看表

    2、查看表信息

        desc 'student'

    3、 修改表结构

    alter 'student',{'NAME'=>'course','VERSIONS'=>'3'}

    4、insert数据到表中

    table-->student  rowkey-->201601  familykey:column-->info:name  4:timestamp
        put 'tableName' ,'rowkey','familykey:column' ,'columnValue',timestamp    
        
        eg.
            put 'student','201601','info:name','liu',4
            put 'student','201601','info:age',15
            put 'student','201601','info:sex','nv'
            put 'student','201601','info:dept','PE'

    5、获取数据

    get 'tableName','rowkey'
        
        eg.
            get 'student','201601'  #获取student表中rowkey为201601的所有列族数据
            get 'student','201601','info:name'  #获取student表中rowkey为201601且info列族中name的值

    6、更新数据(和插入数据一样,只是少了timestamp)

    put 'tableName','rowkey','familykey:column' , 'columnValue'
        
    eg.
       put 'student','201601','info:name','yangwj'

    7、使用scan进行查询

    scan 'student',{COLUMN => 'info:dept'}  #查询student表中所有列为info:dept的值
        
    scan 'student',FILTER=>"RowFilter(=,'substring:2')"  ###?????

    8、表的快照

       snapshot 'student','stu_snap'  #创建表的快照
        
        list_snapshots #显示所有快照表
        
        clone_snapshot 'stu_snap','stu_info' #克隆快照从而生成新的表
        
        delete_snapshot 'stu_snap' #删除快照

    9、删除表 (先禁用表再删除)

       disable 'student'  #禁用表
        is_disabled 'student' #查看表是否被禁用 true:禁用
        drop 'student' #删除表 

    10、总结

     

    完毕!

     

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  • 原文地址:https://www.cnblogs.com/ywjfx/p/11345291.html
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