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