Hbase 查询语句记录

1.1.1 查询前几条数据

scan 'logs',{LIMIT=>1}

1.1.2 3查询表的总条数

count 'logs'

1.1.3 4删除表数据

truncate 't1'

1.1.4 5查看过滤器

 show_filters

1.1.1 6行键过滤器

scan 'logs',{FILTER=>"RowFilter(=,'substring:2017-12-27')"}

1.1.2 例子：

  hbase> scan 'hbase:meta'

  hbase> scan 'hbase:meta', {COLUMNS => 'info:regioninfo'}

  hbase> scan 'ns1:t1', {COLUMNS => ['c1', 'c2'], LIMIT => 10, STARTROW => 'xyz'}

  hbase> scan 't1', {COLUMNS => ['c1', 'c2'], LIMIT => 10, STARTROW => 'xyz'}

  hbase> scan 't1', {COLUMNS => 'c1', TIMERANGE => [1303668804, 1303668904]}

  hbase> scan 't1', {REVERSED => true}

  hbase> scan 't1', {ALL_METRICS => true}

  hbase> scan 't1', {METRICS => ['RPC_RETRIES', 'ROWS_FILTERED']}

  hbase> scan 't1', {ROWPREFIXFILTER => 'row2', FILTER => "

    (QualifierFilter (>=, 'binary:xyz')) AND (TimestampsFilter ( 123, 456))"}

  hbase> scan 't1', {FILTER =>

    org.apache.hadoop.hbase.filter.ColumnPaginationFilter.new(1, 0)}

  hbase> scan 't1', {CONSISTENCY => 'TIMELINE'}

For setting the Operation Attributes

  hbase> scan 't1', { COLUMNS => ['c1', 'c2'], ATTRIBUTES => {'mykey' => 'myvalue'}}

  hbase> scan 't1', { COLUMNS => ['c1', 'c2'], AUTHORIZATIONS => ['PRIVATE','SECRET']}