MogDB 使用样本数据集Mogila

随笔2个月前发布 一品玄学
39 0 0

MogDB 使用样本数据集 Mogila
MogDB 提供了一个样本数据集 Mogila,本数据集借鉴了适用于 MySQL 的Sakila 示例数据库。Sakila最初由 MySQL AB 文档团队的 Mike Hillyer 开发,其目的是提供一个可用于书籍、教程、文章、样本等示例的标准 schema。

Mogila 数据集是一个关于 DVD 出租店信息的数据库,包含有关电影(如标题、类别、女演员)、出租店(如地址、工作人员、客户)和出租的信息。您可以使用 Mogila 数据库进行各种功能测试。

Mogila 适用于 MogDB 2.1 及更高版本。

实体-关系模型图
下图展示了 Mogila 数据库表和视图的概览。您可以查看不同表之间如何通过各个字段相互关联。例如,film表具有title和description列。它还通过列language_id和original_language_id与language表相关联。因此您可以联结这两个表来获取每部电影的语言,或者列出特定语言的所有电影。

在 MogDB 容器版中使用 Mogila
MogDB 容器版本已经内置了 Mogila 样本数据库,无需额外安装。

安装 MogDB 容器版。

使用样本数据库 Mogila:

docker exec -it mogdb bash
omm@eb7aef3f860f:~$ gsql -d mogila -p5432
gsql ((MogDB x.x.x build 56189e20) compiled at 2022-01-07 18:47:53 commit 0 last mr )
Non-SSL connection (SSL connection is recommended when requiring high-security)
Type “help” for help.

mogila=# dt
List of relations
Schema | Name | Type | Owner | Storage
——–+—————+——-+——-+———————————-
public | actor | table | mogdb | {orientation=row,compression=no}
public | address | table | mogdb | {orientation=row,compression=no}
public | category | table | mogdb | {orientation=row,compression=no}
public | city | table | mogdb | {orientation=row,compression=no}
public | country | table | mogdb | {orientation=row,compression=no}
public | customer | table | mogdb | {orientation=row,compression=no}
public | film | table | mogdb | {orientation=row,compression=no}
public | film_actor | table | mogdb | {orientation=row,compression=no}
public | film_category | table | mogdb | {orientation=row,compression=no}
public | inventory | table | mogdb | {orientation=row,compression=no}
public | language | table | mogdb | {orientation=row,compression=no}
public | payment | table | mogdb | {orientation=row,compression=no}
public | rental | table | mogdb | {orientation=row,compression=no}
public | staff | table | mogdb | {orientation=row,compression=no}
public | store | table | mogdb | {orientation=row,compression=no}
(15 rows)

mogila=#
在 MogDB 企业版中使用 Mogila
安装 MogDB 企业版。

创建样本数据库 mogila 及 mogdb 用户,然后登出:

切换到omm用户

[root@test ~]# su – omm

登录postgres数据库,根据实际情况填写端口号

[omm@test ~]$ gsql -d postgres -p5432 -r
gsql ((MogDB x.x.x build 56189e20) compiled at 2022-01-07 18:47:53 commit 0 last mr )
Non-SSL connection (SSL connection is recommended when requiring high-security)
Type “help” for help.
MogDB=#create database mogila DBCOMPATIBILITY='PG';
CREATE DATABASE
MogDB=#create user mogdb password '*@';
CREATE ROLE
MogDB=#q
[omm@test ~]$
下载 mogila,并上传至服务器中,进入 mogila 所在目录。

创建模式对象,然后手动插入数据:

4.1 创建所有模式对象(表等):
gsql -d mogila -p5432 -f mogila-schema.sql

4.2 插入所有数据:
gsql -d mogila -p5432 -f mogila-data.sql

复制
或者通过 1 个脚本创建模式对象并插入数据,如果您已经完成步骤 4.1 和 4.2,则无需执行步骤 5。

创建所有模式对象(表等)并插入所有数据:

gsql -d mogila -p5432 -f mogila-insert-data.sql
使用样本数据库 Mogila:

[omm@test ~]$ gsql -d mogila -p5432 -r
gsql ((MogDB x.x.x build 56189e20) compiled at 2022-01-07 18:47:53 commit 0 last mr )
Non-SSL connection (SSL connection is recommended when requiring high-security)
Type “help” for help.

mogila=# dt
List of relations
Schema | Name | Type | Owner | Storage
——–+—————+——-+——-+———————————-
public | actor | table | mogdb | {orientation=row,compression=no}
public | address | table | mogdb | {orientation=row,compression=no}
public | category | table | mogdb | {orientation=row,compression=no}
public | city | table | mogdb | {orientation=row,compression=no}
public | country | table | mogdb | {orientation=row,compression=no}
public | customer | table | mogdb | {orientation=row,compression=no}
public | film | table | mogdb | {orientation=row,compression=no}
public | film_actor | table | mogdb | {orientation=row,compression=no}
public | film_category | table | mogdb | {orientation=row,compression=no}
public | inventory | table | mogdb | {orientation=row,compression=no}
public | language | table | mogdb | {orientation=row,compression=no}
public | payment | table | mogdb | {orientation=row,compression=no}
public | rental | table | mogdb | {orientation=row,compression=no}
public | staff | table | mogdb | {orientation=row,compression=no}
public | store | table | mogdb | {orientation=row,compression=no}
(15 rows)

mogila=#
示例查询
本节通过一些查询来展示如何使用样本数据库 Mogila。所有查询结果仅展示前 10 项。

按长度排序列出所有电影

select film_id, title, length from film order by length desc;

film_id title length
426 HOME PITY 185
690 POND SEATTLE 185
609 MUSCLE BRIGHT 185
991 WORST BANGER 185
182 CONTROL ANTHEM 185
141 CHICAGO NORTH 185
349 GANGS PRIDE 185
212 DARN FORRESTER 185
817 SOLDIERS EVOLUTION 185
872 SWEET BROTHERHOOD 185
列出每个电影类别中有多少部电影

select category.name, count(category.name) category_count from category left join film_category on category.category_id = film_category.category_id left join film on film_category.film_id = film.film_id group by category.name order by category_count desc;

name category_count
Sports 74
Foreign 73
Family 69
Documentary 68
Animation 66
Action 64
New 63
Drama 62
Sci-Fi 61
Games 61
显示按出演电影的数量排序的演员

select actor.first_name, actor.last_name, count(actor.first_name) featured_count from actor left join film_actor on actor.actor_id = film_actor.actor_id group by actor.first_name, actor.last_name order by featured_count desc;

first_name last_name featured_count
SUSAN DAVIS 54
GINA DEGENERES 42
WALTER TORN 41
MARY KEITEL 40
MATTHEW CARREY 39
SANDRA KILMER 37
SCARLETT DAMON 36
VIVIEN BASINGER 35
VAL BOLGER 35
GROUCHO DUNST 35
获取所有活跃客户的列表,按其姓名排序

select first_name, last_name from customer where active = 1 order by first_name asc;

first_name last_name
MARY SMITH
PATRICIA JOHNSON
LINDA WILLIAMS
BARBARA JONES
ELIZABETH BROWN
JENNIFER DAVIS
MARIA MILLER
SUSAN WILSON
MARGARET MOORE
DOROTHY TAYLOR
查看租 DVD 数量最多的客户,以及租借次数

select customer.first_name, customer.last_name, count(customer.first_name) rentals_count from customer left join rental on customer.customer_id = rental.customer_id group by customer.first_name, customer.last_name order by rentals_count desc;

first_name last_name rentals_count
ELEANOR HUNT 46
KARL SEAL 45
CLARA SHAW 42
MARCIA DEAN 42
TAMMY SANDERS 41
WESLEY BULL 40
SUE PETERS 40
MARION SNYDER 39
RHONDA KENNEDY 39
TIM CARY 39
查看每个出租店的总收入

select store.store_id, sum(payment.amount) as “total revenue” from store left join inventory on inventory.store_id = store.store_id left join rental on rental.inventory_id = inventory.inventory_id left join payment on payment.rental_id = rental.rental_id where payment.amount is not null group by store.store_id order by sum(payment.amount) desc;

store_id total revenue
2 33726.77
1 33689.74
按总收入列出前 5 个电影类型

select category.name, film.title, sum(payment.amount) as “gross revenue” from film left join film_category on film_category.film_id = film.film_id left join category on film_category.category_id = category.category_id left join inventory on inventory.film_id = film.film_id left join rental on rental.inventory_id = inventory.inventory_id left join payment on payment.rental_id = rental.rental_id where payment.amount is not null group by category.name, film.title order by sum(payment.amount) desc limit 5;

name title gross revenue
Music TELEGRAPH VOYAGE 231.73
Documentary WIFE TURN 223.69
Comedy ZORRO ARK 214.69
Sci-Fi GOODFELLAS SALUTE 209.69
Sports SATURDAY LAMBS 204.72
film.description 的数据类型为 text ,支持全文搜索查询,搜索所有包含documentary和robot的描述

select film.title, film.description from film where to_tsvector(film.description) @@ to_tsquery('documentary & robot');

title description
CASPER DRAGONFLY A Intrepid Documentary of a Boat And a Crocodile who must Chase a Robot in The Sahara Desert
CHAINSAW UPTOWN A Beautiful Documentary of a Boy And a Robot who must Discover a Squirrel in Australia
CONTROL ANTHEM A Fateful Documentary of a Robot And a Student who must Battle a Cat in A Monastery
CROSSING DIVORCE A Beautiful Documentary of a Dog And a Robot who must Redeem a Womanizer in Berlin
KANE EXORCIST A Epic Documentary of a Composer And a Robot who must Overcome a Car in Berlin
RUNNER MADIGAN A Thoughtful Documentary of a Crocodile And a Robot who must Outrace a Womanizer in The Outback
SOUTH WAIT A Amazing Documentary of a Car And a Robot who must Escape a Lumberjack in An Abandoned Amusement Park
SWEDEN SHINING A Taut Documentary of a Car And a Robot who must Conquer a Boy in The Canadian Rockies
VIRGIN DAISY A Awe-Inspiring Documentary of a Robot And a Mad Scientist who must Reach a Database Administrator in A Shark Tank

复制
清理
如需清理环境并删除样本数据库,请运行以下命令:

c postgres;
DROP DATABASE mogila;

© 版权声明

相关文章

暂无评论

您必须登录才能参与评论!
立即登录
暂无评论...