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  • hbase shell插入根据条件查询数据

    hbase shell插入根据条件查询数据

    创建并插入数据:

    hbase(main):179:0> create 'scores','grade','course'

    hbase(main):180:0> put 'scores','zhangsan01','course:art','90'

    hbase(main):181:0> scan 'scores'
    ROW                                                          COLUMN+CELL                                                                                                                                                                     
     zhangsan01                                                  column=course:art, timestamp=1498003561726, value=90                                                                                                                            
    1 row(s) in 0.0150 seconds

    hbase(main):182:0> put 'scores','zhangsan01','course:math','99',1498003561726
    (这里手动设置时间戳的时候一定不能大于你当前的系统时间,否则的话无法删除该数据,我这里手动设置数据是为了下面的DependentColumnFilter过滤器试验。你可以查看一下插入第一条数据的时间戳,再插入第二条数据的时间戳为第一条数据的时间戳)
    hbase(main):183:0> put 'scores','zhangsan01','grade:','101'
    问题:当我将这条插入的数据删除之后再执行put 'scores','zhangsan01','grade:','101',1498003561726后能成功却scan 'scores'后没有该条数据,而再执行put 'scores','zhangsan01','grade:','101'后scan 'scores'却能查到该条数据。如果想插入该条数据的时候手动设置时间戳的话,必须在第一次插入该条数据或者truncate后再插入。
    hbase(main):184:0> put 'scores','zhangsan02','course:art','90'

    hbase(main):185:0> get 'scores','zhangsan02','course:art'
    COLUMN                                                       CELL                                                                                                                                                                            
     course:art                                                  timestamp=1498003601365, value=90                                                                                                                                               
    1 row(s) in 0.0080 seconds

    hbase(main):186:0> put 'scores','zhangsan02','grade:','102',1498003601365
    hbase(main):187:0> put 'scores','zhangsan02','course:math','66',1498003561726
    hbase(main):188:0> put 'scores','lisi01','course:math','89',1498003561726
    hbase(main):189:0> put 'scores','lisi01','course:art','89'
    hbase(main):190:0> put 'scores','lisi01','grade:','201',1498003561726

    查询数据:
    根据rowkey查询:

    hbase(main):187:0> get 'scores','zhangsan01'
    COLUMN                                                       CELL                                                                                                                                                                            
     course:art                                                  timestamp=1498003561726, value=90                                                                                                                                               
     course:math                                                 timestamp=1498003561726, value=99                                                                                                                                               
     grade:                                                      timestamp=1498003593575, value=101                                                                                                                                              
    3 row(s) in 0.0160 seconds

    根据列名查询:
    hbase(main):188:0> scan 'scores',{COLUMNS=>'course:art'}
    ROW                                                          COLUMN+CELL                                                                                                                                                                     
     lisi01                                                      column=course:art, timestamp=1498003655021, value=89                                                                                                                            
     zhangsan01                                                  column=course:art, timestamp=1498003561726, value=90                                                                                                                            
     zhangsan02                                                  column=course:art, timestamp=1498003601365, value=90                                                                                                                            
    3 row(s) in 0.0120 seconds

    查询两个rowkey之间的数据:
    hbase(main):205:0> scan 'scores',{STARTROW=>'zhangsan01',STOPROW=>'zhangsan02'}
    ROW                                                          COLUMN+CELL                                                                                                                                                                     
     zhangsan01                                                  column=course:art, timestamp=1498003561726, value=90                                                                                                                            
     zhangsan01                                                  column=course:math, timestamp=1498003561726, value=99                                                                                                                           
     zhangsan01                                                  column=grade:, timestamp=1498003593575, value=101                                                                                                                               
    1 row(s) in 0.0140 seconds

    查询两个rowkey且根据列名来查询:
    hbase(main):206:0> scan 'scores',{COLUMNS=>'course:art',STARTROW=>'zhangsan01',STOPROW=>'zhangsan02'}
    ROW                                                          COLUMN+CELL                                                                                                                                                                     
     zhangsan01                                                  column=course:art, timestamp=1498003561726, value=90                                                                                                                            
    1 row(s) in 0.0110 seconds

    查询指定rowkey到末尾根据列名的查询:
    hbase(main):207:0> scan 'scores',{COLUMNS=>'course:art',STARTROW=>'zhangsan01',STOPROW=>'zhangsan09'}
    ROW                                                          COLUMN+CELL                                                                                                                                                                     
     zhangsan01                                                  column=course:art, timestamp=1498003561726, value=90                                                                                                                            
     zhangsan02                                                  column=course:art, timestamp=1498003601365, value=90                                                                                                                            
    2 row(s) in 0.0310 seconds

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  • 原文地址:https://www.cnblogs.com/zzpblogs/p/10683356.html
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