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百度广告服务商,seo双标题软件,怎么做找优惠券的网站,响应式的网站建设一个多少钱我们在Ubuntu 20 Server版虚拟机上对ClickHouse进行探索。 安装 检测环境 grep -q sse4_2 /proc/cpuinfo && echo "SSE 4.2 supported" || echo "SSE 4.2 not supported"SSE 4.2 supported 可以看到我们的环境支持编译版本的。如果不支持的环境…

我们在Ubuntu 20 Server版虚拟机上对ClickHouse进行探索。

安装

检测环境

grep -q sse4_2 /proc/cpuinfo && echo "SSE 4.2 supported" || echo "SSE 4.2 not supported"

SSE 4.2 supported

可以看到我们的环境支持编译版本的。如果不支持的环境可以考虑通过源码编译安装。

安装

sudo apt-get install -y apt-transport-https ca-certificates dirmngr
sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 8919F6BD2B48D754echo "deb https://packages.clickhouse.com/deb stable main" | sudo tee /etc/apt/sources.list.d/clickhouse.list
sudo apt-get updatesudo apt-get install -y clickhouse-server clickhouse-client

结束时会让输入default用户的密码。

Enter password for default user:

Password for default user is saved in file /etc/clickhouse-server/users.d/default-password.xml.
Setting capabilities for clickhouse binary. This is optional.
chown -R clickhouse:clickhouse ‘/etc/clickhouse-server’
ClickHouse has been successfully installed.
Start clickhouse-server with:
sudo clickhouse start
Start clickhouse-client with:
clickhouse-client --password

启动

 sudo clickhouse start

chown -R clickhouse: ‘/var/run/clickhouse-server/’
Will run sudo --preserve-env -u ‘clickhouse’ /usr/bin/clickhouse-server --config-file /etc/clickhouse-server/config.xml --pid-file /var/run/clickhouse-server/clickhouse-server.pid --daemon
Waiting for server to start
Waiting for server to start
Server started

测试

我们以“英国房地产支付价格”中2021年数据为例。

下载

我们把数据下载下来，查看下其数据内容。

wget http://prod1.publicdata.landregistry.gov.uk.s3-website-eu-west-1.amazonaws.com/pp-2021.csv .

分析数据

head -10 pp-2021.csv

"{D22473F5-3802-7B40-E053-6C04A8C0A630}","230000","2021-06-09 00:00","CO13 0PQ","D","N","F","4","","BELLAMY CLOSE","KIRBY CROSS","FRINTON-ON-SEA","TENDRING","ESSEX","A","A"
"{D22473F5-3803-7B40-E053-6C04A8C0A630}","700000","2021-06-25 00:00","IG10 4BS","T","N","F","70","","SMARTS LANE","","LOUGHTON","EPPING FOREST","ESSEX","A","A"
"{D22473F5-3804-7B40-E053-6C04A8C0A630}","625000","2021-06-28 00:00","EN9 1LH","S","N","F","7","","THE COBBINS","","WALTHAM ABBEY","EPPING FOREST","ESSEX","A","A"
"{D22473F5-3805-7B40-E053-6C04A8C0A630}","360000","2021-02-17 00:00","SS9 3AU","S","N","F","117","","FLEMMING AVENUE","","LEIGH-ON-SEA","SOUTHEND-ON-SEA","SOUTHEND-ON-SEA","A","A"
"{D22473F5-3806-7B40-E053-6C04A8C0A630}","345000","2021-06-25 00:00","SS15 6BG","S","N","F","2","","BROADWATER GREEN","LAINDON","BASILDON","BASILDON","ESSEX","A","A"
"{D22473F5-3807-7B40-E053-6C04A8C0A630}","220000","2021-08-20 00:00","CO7 0HE","S","N","F","133","","CHAPEL ROAD","BRIGHTLINGSEA","COLCHESTER","TENDRING","ESSEX","A","A"
"{D22473F5-3808-7B40-E053-6C04A8C0A630}","362000","2021-06-29 00:00","SS15 4AX","T","N","F","32","","CROUCH STREET","","BASILDON","BASILDON","ESSEX","A","A"
"{D22473F5-3809-7B40-E053-6C04A8C0A630}","300000","2021-06-25 00:00","CM9 6EP","T","N","F","58","","ORCHARD ROAD","","MALDON","MALDON","ESSEX","A","A"
"{D22473F5-380A-7B40-E053-6C04A8C0A630}","300000","2021-06-17 00:00","SS4 3AR","T","N","F","32","","ALLERTON CLOSE","","ROCHFORD","ROCHFORD","ESSEX","A","A"
"{D22473F5-380B-7B40-E053-6C04A8C0A630}","535000","2021-10-22 00:00","SS9 1PZ","T","N","F","113","","LEIGHTON AVENUE","","LEIGH-ON-SEA","SOUTHEND-ON-SEA","SOUTHEND-ON-SEA","A","A"

这些字段具体表意可以参考“英国房地产支付价格”，即

  • uuid_string String,
  • price_string String,
  • time String,
  • postcode String,
  • a String,
  • b String,
  • c String,
  • addr1 String,
  • addr2 String,
  • street String,
  • locality String,
  • town String,
  • district String,
  • county String,
  • d String,
  • e String

放置

默认的用户文件放置位置如如下配置

<user_files_path>/var/lib/clickhouse/user_files/</user_files_path>

切到root用户，将文件放置到上述目录

su root
cp pp-2021.csv /var/lib/clickhouse/user_files/
exit

查询

SELECT * FROM file('pp-2021.csv', 'CSV', 'uuid_string String, price_string String, time String, postcode String, a String, b String, c String, addr1 String, addr2 String, street String, locality String, town String, district String, county String, d String, e String') LIMIT 10;

SELECT *
FROM file('pp-2021.csv', 'CSV', 'uuid_string String, price_string String, time String, postcode String, a String, b String, c String, addr1 String, addr2 String, street String, locality String, town String, district String, county String, d String, e String')
LIMIT 10Query id: c08072df-a934-4276-bfbc-68d480409ca1┌─uuid_string────────────────────────────┬─price_string─┬─time─────────────┬─postcode─┬─a─┬─b─┬─c─┬─addr1─┬─addr2─┬─street───────────┬─locality──────┬─town───────────┬─district────────┬─county──────────┬─d─┬─e─┐
│ {D22473F5-3802-7B40-E053-6C04A8C0A630} │ 230000       │ 2021-06-09 00:00 │ CO13 0PQ │ D │ N │ F │ 4     │       │ BELLAMY CLOSE    │ KIRBY CROSS   │ FRINTON-ON-SEA │ TENDRING        │ ESSEX           │ A │ A │
│ {D22473F5-3803-7B40-E053-6C04A8C0A630} │ 700000       │ 2021-06-25 00:00 │ IG10 4BS │ T │ N │ F │ 70    │       │ SMARTS LANE      │               │ LOUGHTON       │ EPPING FOREST   │ ESSEX           │ A │ A │
│ {D22473F5-3804-7B40-E053-6C04A8C0A630} │ 625000       │ 2021-06-28 00:00 │ EN9 1LH  │ S │ N │ F │ 7     │       │ THE COBBINS      │               │ WALTHAM ABBEY  │ EPPING FOREST   │ ESSEX           │ A │ A │
│ {D22473F5-3805-7B40-E053-6C04A8C0A630} │ 360000       │ 2021-02-17 00:00 │ SS9 3AU  │ S │ N │ F │ 117   │       │ FLEMMING AVENUE  │               │ LEIGH-ON-SEA   │ SOUTHEND-ON-SEA │ SOUTHEND-ON-SEA │ A │ A │
│ {D22473F5-3806-7B40-E053-6C04A8C0A630} │ 345000       │ 2021-06-25 00:00 │ SS15 6BG │ S │ N │ F │ 2     │       │ BROADWATER GREEN │ LAINDON       │ BASILDON       │ BASILDON        │ ESSEX           │ A │ A │
│ {D22473F5-3807-7B40-E053-6C04A8C0A630} │ 220000       │ 2021-08-20 00:00 │ CO7 0HE  │ S │ N │ F │ 133   │       │ CHAPEL ROAD      │ BRIGHTLINGSEA │ COLCHESTER     │ TENDRING        │ ESSEX           │ A │ A │
│ {D22473F5-3808-7B40-E053-6C04A8C0A630} │ 362000       │ 2021-06-29 00:00 │ SS15 4AX │ T │ N │ F │ 32    │       │ CROUCH STREET    │               │ BASILDON       │ BASILDON        │ ESSEX           │ A │ A │
│ {D22473F5-3809-7B40-E053-6C04A8C0A630} │ 300000       │ 2021-06-25 00:00 │ CM9 6EP  │ T │ N │ F │ 58    │       │ ORCHARD ROAD     │               │ MALDON         │ MALDON          │ ESSEX           │ A │ A │
│ {D22473F5-380A-7B40-E053-6C04A8C0A630} │ 300000       │ 2021-06-17 00:00 │ SS4 3AR  │ T │ N │ F │ 32    │       │ ALLERTON CLOSE   │               │ ROCHFORD       │ ROCHFORD        │ ESSEX           │ A │ A │
│ {D22473F5-380B-7B40-E053-6C04A8C0A630} │ 535000       │ 2021-10-22 00:00 │ SS9 1PZ  │ T │ N │ F │ 113   │       │ LEIGHTON AVENUE  │               │ LEIGH-ON-SEA   │ SOUTHEND-ON-SEA │ SOUTHEND-ON-SEA │ A │ A │
└────────────────────────────────────────┴──────────────┴──────────────────┴──────────┴───┴───┴───┴───────┴───────┴──────────────────┴───────────────┴────────────────┴─────────────────┴─────────────────┴───┴───┘10 rows in set. Elapsed: 0.003 sec.

参考资料

  • https://clickhouse.com/docs/zh/getting-started/install
  • https://clickhouse.com/docs/zh/getting-started/example-datasets/uk-price-paid
  • https://clickhouse.com/docs/en/sql-reference
  • https://clickhouse.com/docs/en/sql-reference/table-functions/file
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