dolt 基于git协议的数据管理工具

Posted 2021-03-24 rongfengliang

dolt 基于git 协议提供了多版本，分支特性的数据管理工具，使用简单，同时也提供了类似github 的一个云服务

安装

• 下载地址
  https://github.com/liquidata-inc/dolt/releases
• 配置环境变量
  对于mac 以及linux 添加path 变量

使用

• init

dolt init

参考提示添加配置

Could not determine user.name. Use the init parameter --name "FIRST LAST" to set it for this repo, or dolt config --global --add user.name "FIRST LAST"

usage: dolt init [<options>] [<path>]

?

Specific dolt init options

    --name=<name>

      The name used in commits to this repo. If not provided will be taken

      from "user.name" in the global config.

?

    --email=<email>

      The email address used. If not provided will be taken from

      "user.email" in the global config.

 

 

dolt config --global --add user.name "dalong"

dolt config --global --add user.email "[e-mail]"

重新运行效果

dolt init                                    

Successfully initialized dolt data repository.

目录结构

tree .dolt 

.dolt

├── config.json

├── noms

│ ├── 4bujnjuatdli0klda7ucot0tl836jujt

│ ├── LOCK

│ ├── imfkg6k82o3lajgqh297rf1keldounr7

│ ├── manifest

│ ├── obi3h4k8ci1l3rdqq746ncs893dgptfl

│ └── u1jpqa68sgephuj7q2r0bdie06ctdm20

└── repo_state.json

?

1 directory, 8 files

 

 

• 添加sql支持

dolt sql -q "create table state_populations ( state varchar, population int, primary key (state) )"

dolt sql -q "show tables"

效果

+-------------------+

| tables |

+-------------------+

| state_populations |

+-------------------+

 

 

• 插入数据

dolt sql -q ‘insert into state_populations (state, population) values

("Delaware", 59096),

("Maryland", 319728),

("Tennessee", 35691),

("Virginia", 691937),

("Connecticut", 237946),

("Massachusetts", 378787),

("South Carolina", 249073),

("New Hampshire", 141885),

("Vermont", 85425),

("Georgia", 82548),

("Pennsylvania", 434373),

("Kentucky", 73677),

("New York", 340120),

("New Jersey", 184139),

("North Carolina", 393751),

("Maine", 96540),

("Rhode Island", 68825)‘

 

 

• 查询

dolt sql -q "select * from state_populations where state = ‘New York‘"

效果

+----------+------------+

| state | population |

+----------+------------+

| New York | 340120 |

+----------+------------+

 

 

• git 方式 提交操作

? first dolt add .

? first dolt commit -m "init demo"

commit 1j1o30pvevn6ldbpg2jeu43i7uu6b3pj

Author: dalong <[e-mail]>

Date: Sun Oct 27 11:06:57 +0800 2019

 init demo

? first dolt status

On branch master

nothing to commit, working tree clean

说明

以上是一个简单的操作，实际上dolt 支持了方便的数据导入，数据更新功能，功能操作和git 一直，源码基于golang 编写，可以学习下源码

参考资料

https://github.com/liquidata-inc/dolt