MogDB 使用样本数据集Mogila

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

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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

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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;