一、進入Hbase Shell客戶端
先在Linux Shell命令行終端執(zhí)行start-dfs.sh腳本啟動HDFS，再執(zhí)行start-hbase.sh腳本啟動HBase。如果Linux系統(tǒng)已配置HBase環(huán)境變量，可直接在任意目錄下執(zhí)行hbase shell腳本命令，就可進入HBase Shell的命令行終端環(huán)境，exit可以退出HBase Shell（我安裝的是偽分布式的HBase）。
（1） help幫助命令（或者help '命令名稱'查看某一具體命令的使用方法）
hbase:055:0> help
HBase Shell, version 2.5.6, r6bac842797dc26bedb7adc0759358e4c8fd5a992, Sat Oct 14 23:36:46 PDT 2023
Type 'help "COMMAND"', (e.g. 'help "get"' -- the quotes are necessary) for help on a specific command.
Commands are grouped. Type 'help "COMMAND_GROUP"', (e.g. 'help "general"') for help on a command group.
COMMAND GROUPS:
Group name: general
Commands: processlist, status, table_help, version, whoami
Group name: ddl
Commands: alter, alter_async, alter_status, clone_table_schema, create, describe, disable, disable_all, drop, drop_all, enable, enable_all, exists, get_table, is_disabled, is_enabled, list, list_regions, locate_region, show_filters
Group name: namespace
Commands: alter_namespace, create_namespace, describe_namespace, drop_namespace, list_namespace, list_namespace_tables
Group name: dml
Commands: append, count, delete, deleteall, get, get_counter, get_splits, incr, put, scan, truncate, truncate_preserve二、General通用操作命令
（1）status：查看HBase集群狀態(tài)
hbase:051:0> status
1 active master, 0 backup masters, 1 servers, 0 dead, 5.0000 average load
Took 2.3419 seconds （2）version：查看HBase版本信息
hbase:052:0> version
2.5.6, r6bac842797dc26bedb7adc0759358e4c8fd5a992, Sat Oct 14 23:36:46 PDT 2023
Took 0.0029 seconds （3）whoami：查看當(dāng)前登錄HBase的系統(tǒng)用戶信息
hbase:053:0> whoami
root (auth:SIMPLE)
groups: root
Took 0.1906 seconds （4）table_help：查看HBase數(shù)據(jù)表操作的幫助信息
table_help
Help for table-reference commands.
You can either create a table via 'create' and then manipulate the table via commands like 'put', 'get', etc.
See the standard help information for how to use each of these commands.三、Namespace操作
namespace(命名空間)是HBase對數(shù)據(jù)表的邏輯分組，用于數(shù)據(jù)表的業(yè)務(wù)劃分。例如上層應(yīng)用可以不同業(yè)務(wù)的數(shù)據(jù)表分別放置在不同的名字空間，以實現(xiàn)不同業(yè)務(wù)數(shù)據(jù)表之間的數(shù)據(jù)隔離。命名空間和數(shù)據(jù)表是一對多關(guān)系，命名空間可以包含多張數(shù)據(jù)表，一張數(shù)據(jù)表只能屬于一個名字空間。HBase數(shù)據(jù)庫中的NameSpace類似于MySQL數(shù)據(jù)庫中的database。 命名空間是HBASE對數(shù)據(jù)表的邏輯分組，用于數(shù)據(jù)表的業(yè)務(wù)劃分。
（1）list_namespace:查詢所有命名空間
hbase:036:0> list_namespace
NAMESPACE
default
hbase
ns1
3 row(s)
Took 0.0654 seconds （2）list_namespace_tables : 查詢指定命名空間的表
hbase:038:0> list_namespace_tables 'ns1'
TABLE
t1
1 row(s)
Took 0.1958 seconds
=> ["t1"]
（3）create_namespace : 創(chuàng)建指定的命名空間
hbase:039:0> create_namespace 'ns2'
Took 0.4516 seconds （4）describe_namespace : 查詢指定命名空間的結(jié)構(gòu)
hbase:041:0> describe_namespace 'ns2'
DESCRIPTION
{NAME => 'ns2'} （5）alter_namespace ：修改命名空間的結(jié)構(gòu)
hbase:045:0> alter_namespace 'ns2',{METHOD=>'set','authore'=>'Mike'}
Took 1.6665 seconds
hbase:046:0> describe_namespace 'ns2'
DESCRIPTION
{NAME => 'ns2', author => 'Mike'}
Quota is disabled
Took 0.2023 seconds
hbase:047:0> alter_namespace 'ns2',{METHOD=>'unset','NAME'=>'author'}
Took 0.1602 seconds
hbase:048:0> describe_namespace 'ns2'
DESCRIPTION
{NAME => 'ns2'}
Quota is disabled
Took 0.0878 seconds （6）drop_namespace：刪除命名空間
hbase:049:0> drop_namespace 'ns2'
Took 0.4194 seconds
hbase:050:0> list_namespace
NAMESPACE
default
hbase
ns1
3 row(s)
Took 0.0610 seconds四、DDL操作命令
DDL分組中包含的操作命令很多，主要用于對HBase數(shù)據(jù)庫表的相關(guān)管理操作，主要包括創(chuàng)建表、修改表、刪除表、列出表、啟用表、禁用表等操作。
（1）create:建表（建表的時候，必須至少指定一個列族名稱）
在默認的命名空間中，創(chuàng)建表students，并包含一個名為info的列族，列族屬性默認。
#如果保留默認的列族設(shè)置，建表時直接寫列族的名字就可以了
hbase:070:0> create 'students','info'
2024-03-21 00:25:59,140 INFO [main] client.HBaseAdmin (HBaseAdmin.java:postOperationResult(3591)) - Operation: CREATE, Table Name: default:students, procId: 131 completed
Created table students
Took 3.4314 seconds
=> Hbase::Table - students?在指定的ns1命名空間中，創(chuàng)建表t1，并包含一個名為f1的列族，列族屬性自定義。
#建表的同時指定列族屬性
hbase:071:0> create 'ns1:t1',{NAME=>'f1',VERSIONS=>5}
2024-03-21 00:28:43,872 INFO [main] client.HBaseAdmin (HBaseAdmin.java:postOperationResult(3591)) - Operation: CREATE, Table Name: ns1:t1, procId: 134 completed
Created table ns1:t1
Took 2.3465 seconds
=> Hbase::Table - ns1:t1
（2）list : 查詢所有的表
hbase:072:0> list
TABLE
students
ns1:t1
2 row(s)
Took 0.2459 seconds
=> ["students", "ns1:t1"]（3）describe/desc : 查詢表結(jié)構(gòu)
hbase:074:0> describe 'students'
Table students is ENABLED
students, {TABLE_ATTRIBUTES => {METADATA => {'hbase.store.file-tracker.impl' => DEFAULT'}}}
COLUMN FAMILIES DESCRIPTION
{NAME => 'info', INDEX_BLOCK_ENCODING => 'NONE', VERSIONS => '1', KEEP_DELETED_CELLS => 'FALSE'
, DATA_BLOCK_ENCODING => 'NONE', TTL => 'FOREVER', MIN_VERSIONS => '0', REPLICATION_SCOPE => '0
', BLOOMFILTER => 'ROW', IN_MEMORY => 'false', COMPRESSION => 'NONE', BLOCKCACHE => 'true', BLO
CKSIZE => '65536 B (64KB)'}
1 row(s)
Quota is disabled
Took 1.1379 seconds（4）exists : 判斷指定表明是否存在
hbase:075:0> exists 'ns1:t1'
Table ns1:t1 does exist
Took 0.0714 seconds
=> true（5）alter：修改表，添加、修改、刪除列簇信息
為students表格，增加一個列族score。
hbase:076:0> alter 'students','score'
Updating all regions with the new schema...
1/1 regions updated.
Done.
Took 3.8994 seconds
hbase:077:0> desc 'students'
Table students is ENABLED
students, {TABLE_ATTRIBUTES => {METADATA => {'hbase.store.file-tracker.impl' => 'DEFAULT'}}}
COLUMN FAMILIES DESCRIPTION
{NAME => 'info', INDEX_BLOCK_ENCODING => 'NONE', VERSIONS => '1', KEEP_DELETED_CELLS => 'FALSE'
, DATA_BLOCK_ENCODING => 'NONE', TTL => 'FOREVER', MIN_VERSIONS => '0', REPLICATION_SCOPE => '0
', BLOOMFILTER => 'ROW', IN_MEMORY => 'false', COMPRESSION => 'NONE', BLOCKCACHE => 'true', BLO
CKSIZE => '65536 B (64KB)'}
{NAME => 'score', INDEX_BLOCK_ENCODING => 'NONE', VERSIONS => '1', KEEP_DELETED_CELLS => 'FALSE
', DATA_BLOCK_ENCODING => 'NONE', TTL => 'FOREVER', MIN_VERSIONS => '0', REPLICATION_SCOPE => '
0', BLOOMFILTER => 'ROW', IN_MEMORY => 'false', COMPRESSION => 'NONE', BLOCKCACHE => 'true', BL
OCKSIZE => '65536 B (64KB)'}
2 row(s)
Quota is disabled
Took 0.0753 seconds修改表格students的列族score的屬性VERSIONS的值為5。
hbase:078:0> alter 'students',NAME=>'score',VERSIONS=>5
Updating all regions with the new schema...
1/1 regions updated.
Done.
Took 1.9776 seconds刪除表格表格students的列族score。
hbase:079:0> alter 'students',NAME=>'score',METHOD=>'delete'
Updating all regions with the new schema...
1/1 regions updated.
Done.
Took 2.5517 seconds
hbase:080:0> desc 'students'
Table students is ENABLED
students, {TABLE_ATTRIBUTES => {METADATA => {'hbase.store.file-tracker.impl' =>'DEFAULT'}}}
COLUMN FAMILIES DESCRIPTION
{NAME => 'info', INDEX_BLOCK_ENCODING => 'NONE', VERSIONS => '1', KEEP_DELETED_CELLS => 'FALSE'
, DATA_BLOCK_ENCODING => 'NONE', TTL => 'FOREVER', MIN_VERSIONS => '0', REPLICATION_SCOPE => '0
', BLOOMFILTER => 'ROW', IN_MEMORY => 'false', COMPRESSION => 'NONE', BLOCKCACHE => 'true', BLO
CKSIZE => '65536 B (64KB)'}
1 row(s)
Quota is disabled
Took 0.2625 seconds （6）disable：禁用表格
hbase:083:0> disable 'students'
2024-03-21 00:52:29,298 INFO [main] client.HBaseAdmin (HBaseAdmin.java:rpcCall(926)) - Started disable of students
2024-03-21 00:52:29,810 INFO [main] client.HBaseAdmin (HBaseAdmin.java:postOperationResult(3591)) - Operation: DISABLE, Table Name: default:students, procId: 158 completed
Took 0.5354 seconds（7）enable：啟用表格
hbase:084:0> enable 'students'
2024-03-21 00:52:51,239 INFO [main] client.HBaseAdmin (HBaseAdmin.java:rpcCall(866)) - Started enable of students
2024-03-21 00:52:51,882 INFO [main] client.HBaseAdmin (HBaseAdmin.java:postOperationResult(3591)) - Operation: ENABLE, Table Name: default:students, procId: 161 completed
Took 0.6636 seconds （8）drop：刪除表格（先要disable表，再刪除表）
hbase:085:0> disable 'ns1:t1'
2024-03-21 00:53:34,360 INFO [main] client.HBaseAdmin (HBaseAdmin.java:rpcCall(926)) - Started disable of ns1:t1
2024-03-21 00:53:34,727 INFO [main] client.HBaseAdmin (HBaseAdmin.java:postOperationResult(3591)) - Operation: DISABLE, Table Name: ns1:t1, procId: 164 completed
Took 0.3910 seconds
hbase:086:0> drop 'ns1:t1'
2024-03-21 00:53:43,300 INFO [main] client.HBaseAdmin (HBaseAdmin.java:postOperationResult(3591)) - Operation: DELETE, Table Name: ns1:t1, procId: 167 completed
Took 0.7044 seconds
hbase:087:0> list
TABLE
students
1 row(s)
Took 0.0301 seconds
=> ["students"]五、DML操作命令
DML包含的操作命令很多，主要用于對數(shù)據(jù)表中的數(shù)據(jù)進行操作，主要包括全表掃描、讀取單行數(shù)據(jù)、寫入數(shù)據(jù)和刪除數(shù)據(jù)等操作。
（1）put：插入數(shù)據(jù)（put命令，不能一次性插入多條）
往students表格的info列族，增加2條數(shù)據(jù)：
行鍵為s001，列限定符name，單元格值Jack；行鍵為s001，列限定符age，單元格值20；
往students表格的score列族，增加2條數(shù)據(jù)：
行鍵為s001，列限定符Chinese，單元格值90；行鍵為s001，列限定符Math，單元格值85；
hbase:088:0> put 'students','s001','info:name','Jack'
Took 2.2121 seconds
hbase:092:0> put 'students','s001','info:age','20'
Took 0.0543 seconds
hbase:096:0> put 'students','s001','score:Chinese','90'
Took 0.0380 seconds
hbase:097:0> put 'students','s001','score:Math','85'
Took 0.0148 seconds 修改students表格的單元格值：行鍵為s001，列限定符name，單元格值'Jack'修改為'Mike'。
hbase:089:0> put 'students','s001','info:name','Mike'
Took 0.2027 seconds（2）get：查詢數(shù)據(jù)
查詢students表格，行鍵為s001的所有數(shù)據(jù)。
hbase:098:0> get 'students','s001'
COLUMN CELL
info:age timestamp=2024-03-21T01:11:05.881, value=20
info:name timestamp=2024-03-21T01:04:05.318, value=Mike
score:Chinese timestamp=2024-03-21T01:16:34.006, value=90
score:Math timestamp=2024-03-21T01:16:48.854, value=85
1 row(s)
Took 0.1583 seconds查詢行鍵為s001，數(shù)據(jù)列為socre:Chinese的單元格值。
hbase:103:0> get 'students','s001','score:Chinese'
COLUMN CELL
score:Chinese timestamp=2024-03-21T01:16:34.006, value=90
1 row(s)
Took 0.0142 seconds查詢學(xué)生Mike的多次數(shù)學(xué)成績。（確保score列族數(shù)學(xué)的VERSION版本不止為1）
hbase:108:0> alter 'students',NAME=>'score',VERSIONS=>5
Updating all regions with the new schema...
1/1 regions updated.
Done.
Took 3.6026 seconds1）寫入學(xué)生Mike的多次數(shù)學(xué)成績
hbase:100:0> put 'students','s001','score:Math','92'
Took 0.0871 seconds
hbase:101:0> put 'students','s001','score:Math','100'
Took 0.0158 seconds2）讀取學(xué)生Mike最新的一次數(shù)學(xué)成績(get命令默認只讀出最新寫入的單元格值，時間戳版本最大的單元格值內(nèi)容)。
hbase:102:0> get 'students','s001','score:Math'
COLUMN CELL
score:Math timestamp=2024-03-21T01:23:13.668, value=100
1 row(s)
Took 0.0771 seconds 3）查詢學(xué)生Mike的3次數(shù)學(xué)成績。
hbase:111:0> get 'students','s001',{COLUMN=>'score:Math',VERSIONS=>3}
COLUMN CELL
score:Math timestamp=2024-03-21T01:32:55.629, value=85
score:Math timestamp=2024-03-21T01:32:35.808, value=92
score:Math timestamp=2024-03-21T01:23:13.668, value=100
1 row(s)
Took 0.2027 seconds（3）scan：掃描數(shù)據(jù)（讀取所有行的每個列族的所有數(shù)據(jù)列的最新時間戳版本的單元格值）
1）為了獲得更好效果，現(xiàn)在students表中寫入多行數(shù)據(jù)。
hbase:112:0> put 'students','s002','info:name','Tom'
hbase:113:0> put 'students','s002','info:age','19'
hbase:114:0> put 'students','s002','score:Chinese','87'
hbase:115:0> put 'students','s002','score:Math','70'
hbase:116:0> put 'students','s003','info:name','Lucy'
hbase:117:0> put 'students','s003','info:age',18'
hbase:122:0> put 'students','s003','score:Chinese','80'
hbase:123:0> put 'students','s003','score:Math','90'2）對數(shù)據(jù)表students進行全表掃描。
hbase:124:0> scan 'students'
ROW COLUMN+CELL
s001 column=info:age, timestamp=2024-03-21T01:11:05.881, value=20
s001 column=info:name, timestamp=2024-03-21T01:04:05.318, value=Mike
s001 column=score:Chines, timestamp=2024-03-21T01:16:34.006, value=90
s001 column=score:Math, timestamp=2024-03-21T01:32:55.629, value=85
s002 column=info:Chinese, timestamp=2024-03-21T01:43:05.067, value=89
s002 column=info:Math, timestamp=2024-03-21T01:43:22.209, value=95
s002 column=info:age, timestamp=2024-03-21T01:42:45.619, value=19
s002 column=info:name, timestamp=2024-03-21T01:42:33.917, value=Tom
s003 column=info:age, timestamp=2024-03-21T01:44:16.318, value=18
s003 column=info:name, timestamp=2024-03-21T01:43:45.397, value=Lucy
s003 column=score:Chinese, timestamp=2024-03-21T01:45:40.078, value=80
s003 column=score:Math, timestamp=2024-03-21T01:45:53.743, value=90
3 row(s)
Took 0.2514 seconds 3）對數(shù)據(jù)表students的指定行鍵范圍的數(shù)據(jù)進行掃描。
#若只指定開始的行鍵STARTROW，會一直掃描到最后，包含STARTROW和最后一行數(shù)據(jù)
hbase:135:0> scan 'students',{STARTROW=>'s002'}
ROW COLUMN+CELL
s002 column=info:age, timestamp=2024-03-21T01:42:45.619, value=19
s002 column=info:name, timestamp=2024-03-21T01:42:33.917, value=Tom
s002 column=score:Chinese, timestamp=2024-03-21T01:48:44.123, value=87
s002 column=score:Math, timestamp=2024-03-21T01:48:59.578, value=70
s003 column=info:age, timestamp=2024-03-21T01:44:16.318, value=18
s003 column=info:name, timestamp=2024-03-21T01:43:45.397, value=Lucy
s003 column=score:Chinese, timestamp=2024-03-21T01:45:40.078, value=80
s003 column=score:Math, timestamp=2024-03-21T01:45:53.743, value=90
2 row(s)
Took 0.6646 seconds #同時指定STARTROW和STOPROW,行鍵范圍包括STARTROW，但不包含STOPROW的數(shù)據(jù)
hbase:136:0> scan 'students',{STARTROW=>'s002',STOPROW=>'s003'}
ROW COLUMN+CELL
s002 column=info:age, timestamp=2024-03-21T01:42:45.619, value=19
s002 column=info:name, timestamp=2024-03-21T01:42:33.917, value=Tom
s002 column=score:Chinese, timestamp=2024-03-21T01:48:44.123, value=87
s002 column=score:Math, timestamp=2024-03-21T01:48:59.578, value=70
1 row(s)
Took 0.0566 seconds4）對數(shù)據(jù)表students的指定列族info進行掃描。
hbase:137:0> scan 'students',{COLUMNS=>['info']}
ROW COLUMN+CELL
s001 column=info:age, timestamp=2024-03-21T01:11:05.881, value=20
s001 column=info:name, timestamp=2024-03-21T01:04:05.318, value=Mike
s002 column=info:age, timestamp=2024-03-21T01:42:45.619, value=19
s002 column=info:name, timestamp=2024-03-21T01:42:33.917, value=Tom
s003 column=info:age, timestamp=2024-03-21T01:44:16.318, value=18
s003 column=info:name, timestamp=2024-03-21T01:43:45.397, value=Lucy
3 row(s)
Took 0.2538 seconds5）對數(shù)據(jù)表students的指定列族info下的name數(shù)據(jù)列進行掃描。
hbase:138:0> scan 'students',{COLUMNS=>['info:name']}
ROW COLUMN+CELL
s001 column=info:name, timestamp=2024-03-21T01:04:05.318, value=Mike
s002 column=info:name, timestamp=2024-03-21T01:42:33.917, value=Tom
s003 column=info:name, timestamp=2024-03-21T01:43:45.397, value=Lucy
3 row(s)
Took 0.0447 seconds6）對數(shù)據(jù)表students的前2行數(shù)據(jù)進行掃描。
hbase:139:0> scan 'students',{LIMIT=>2}
ROW COLUMN+CELL
s001 column=info:age, timestamp=2024-03-21T01:11:05.881, value=20
s001 column=info:name, timestamp=2024-03-21T01:04:05.318, value=Mike
s001 column=score:Chinese, timestamp=2024-03-21T01:16:34.006, value=90
s001 column=score:Math, timestamp=2024-03-21T01:32:55.629, value=85
s002 column=info:age, timestamp=2024-03-21T01:42:45.619, value=19
s002 column=info:name, timestamp=2024-03-21T01:42:33.917, value=Tom
s002 column=score:Chinese, timestamp=2024-03-21T01:48:44.123, value=87
s002 column=score:Math, timestamp=2024-03-21T01:48:59.578, value=70
2 row(s)
Took 0.0328 seconds （4）count：統(tǒng)計表行數(shù)
hbase:141:0> count 'students'
3 row(s)
Took 1.1445 seconds
=> 3（5）delete：刪除指定數(shù)據(jù)列單元格
刪除數(shù)據(jù)表students的指定數(shù)據(jù)列單元格（刪除行鍵003的列族score下的列限定符Math單元格）。
hbase:143:0> delete 'students','s003','score:Math'
Took 0.0677 seconds
hbase:144:0> get 'students','s003'
COLUMN CELL
info:age timestamp=2024-03-21T01:44:16.318, value=18
info:name timestamp=2024-03-21T01:43:45.397, value=Lucy
score:Chines timestamp=2024-03-21T01:45:40.078, value=80
1 row(s)
Took 0.1472 seconds（6）deleteall：刪除指定數(shù)據(jù)行
1）刪除數(shù)據(jù)表students的行鍵為s003的數(shù)據(jù)。
hbase:145:0> deleteall 'students','s003'
Took 0.1017 seconds
hbase:146:0> get 'students','s003'
COLUMN CELL
0 row(s)
Took 0.0270 seconds 2）刪除數(shù)據(jù)表students的行鍵為s002，列名為score:chinese的所有數(shù)據(jù)。
hbase:148:0> deleteall 'students','s002','score:Chinese'
Took 0.0182 seconds
hbase:149:0> get 'students','s002'
COLUMN CELL
info:age timestamp=2024-03-21T01:42:45.619, value=19
info:name timestamp=2024-03-21T01:42:33.917, value=Tom
score:Math timestamp=2024-03-21T01:48:59.578, value=70
1 row(s)
Took 0.0348 seconds（7）append：給指定列的單元格追加內(nèi)容
給行鍵s002，列名info: name的數(shù)據(jù)列單元格值Tom后面追加son后變成Tomson。
hbase:007:0> append 'students','s002','info:name','son'
CURRENT VALUE = Tomson
Took 0.9325 seconds
hbase:008:0> get 'students','s002'
COLUMN CELL
info:age timestamp=2024-03-21T01:42:45.619, value=19
info:name timestamp=2024-03-21T06:16:33.838, value=Tomson
score:Math timestamp=2024-03-21T01:48:59.578, value=70
1 row(s)
Took 0.4914 seconds （8）truncate：清空指定數(shù)據(jù)表的全部數(shù)據(jù)內(nèi)容
清空數(shù)據(jù)表students的內(nèi)容。
hbase:009:0> truncate 'students'
Truncating 'students' table (it may take a while):
Disabling table...
2024-03-21 06:17:52,730 INFO [main] client.HBaseAdmin (HBaseAdmin.java:rpcCall(926)) - Started disable of students
2024-03-21 06:17:57,843 INFO [main] client.HBaseAdmin (HBaseAdmin.java:postOperationResult(3591)) - Operation: DISABLE, Table Name: default:students, procId: 194 completed
Truncating table...
2024-03-21 06:17:57,898 INFO [main] client.HBaseAdmin (HBaseAdmin.java:rpcCall(806)) - Started truncating students
2024-03-21 06:18:02,439 INFO [main] client.HBaseAdmin (HBaseAdmin.java:postOperationResult(3591)) - Operation: TRUNCATE, Table Name: default:students, procId: 197 completed
Took 10.4274 seconds
hbase:010:0> scan 'students'
ROW COLUMN+CELL
0 row(s)
Took 6.5341 seconds六、查詢數(shù)據(jù)時顯示中文內(nèi)容
直接通過設(shè)置FORMATTER的屬性值為'toString'即可。文章來源：http://www.zghlxwxcb.cn/news/detail-850176.html
hbase:022:0> scan 'major',FORMATTER=>'toString'
ROW COLUMN+CELL
row1 column=info:college, timestamp=2024-04-08T04:50:16.954, value=信息工程學(xué)院
row1 column=info:mname, timestamp=2024-04-08T04:49:59.301, value=大數(shù)據(jù)技術(shù)
row1 column=info:mnum, timestamp=2024-04-08T04:49:29.291, value=m001
row1 column=other:class, timestamp=2024-04-08T04:50:40.604, value=engineer
row2 column=info:college, timestamp=2024-04-08T04:52:15.739, value=信息工程學(xué)院
row2 column=info:mname, timestamp=2024-04-08T04:52:10.160, value=網(wǎng)絡(luò)技術(shù)
row2 column=info:mnum, timestamp=2024-04-08T04:52:03.393, value=m002
row2 column=other:class, timestamp=2024-04-08T04:52:23.712, value=engineer
2 row(s)
Took 0.0779 seconds
?文章來源地址http://www.zghlxwxcb.cn/news/detail-850176.html
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