├── LICENSE
├── schema.sql
├── data.sql
├── README.md
└── queries.sql
/LICENSE:
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1 | MIT License
2 |
3 | Copyright (c) 2023 NOEL NOMGNE FOKA
4 |
5 | Permission is hereby granted, free of charge, to any person obtaining a copy
6 | of this software and associated documentation files (the "Software"), to deal
7 | in the Software without restriction, including without limitation the rights
8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9 | copies of the Software, and to permit persons to whom the Software is
10 | furnished to do so, subject to the following conditions:
11 |
12 | The above copyright notice and this permission notice shall be included in all
13 | copies or substantial portions of the Software.
14 |
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 | SOFTWARE.
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/schema.sql:
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1 | /* Database schema to keep the structure of entire database. */
2 |
3 | CREATE TABLE animals (
4 | id INTEGER PRIMARY KEY NOT NULL,
5 | name varchar,
6 | date_of_birth date,
7 | escape_attempts INTEGER,
8 | neutered boolean,
9 | weight_kg decimal
10 | );
11 |
12 | ALTER TABLE animals ADD species varchar(255);
13 |
14 | CREATE TABLE owners (
15 | id serial PRIMARY KEY,
16 | full_name VARCHAR(255),
17 | age INTEGER
18 | );
19 |
20 | CREATE TABLE species (
21 | id serial PRIMARY KEY,
22 | name VARCHAR(155)
23 | );
24 |
25 | ALTER TABLE animals ADD CONSTRAINT animal_id UNIQUE (id);
26 |
27 | ALTER TABLE animals
28 | DROP species,
29 | ADD COLUMN species_id INTEGER,
30 | ADD COLUMN owner_id INTEGER;
31 |
32 | ALTER TABLE animals
33 | ADD CONSTRAINT fk_species FOREIGN KEY (species_id) REFERENCES species(id),
34 | ADD CONSTRAINT fk_owner FOREIGN KEY (owner_id) REFERENCES owners(id);
35 |
36 | create table vets(
37 | id int primary key generated always as identity,
38 | name varchar(50),
39 | age int,
40 | date_of_graduation date
41 | );
42 |
43 | create table specializations (
44 | species_id int,
45 | vet_id int,
46 | primary key(species_id, vet_id),
47 | constraint fk_species
48 | foreign key (species_id)
49 | references species(id),
50 | constraint fk_vets
51 | foreign key(vet_id)
52 | references vets(id)
53 | );
54 |
55 | create table visits(
56 | animal_id int,
57 | vet_id int,
58 | date_of_visits date,
59 | constraint fk_animals
60 | foreign key(animal_id)
61 | references animals(id),
62 | constraint fk_vets
63 | foreign key(vet_id)
64 | references vets(id)
65 | );
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/data.sql:
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1 | /* Populate database with sample data. */
2 |
3 | INSERT INTO animals(id, name, date_of_birth, escape_attempts, neutered, weight_kg)
4 | VALUES (1, 'Agumon', '2020-02-03', 0, true, 10.23);
5 |
6 | INSERT INTO animals(id, name, date_of_birth, escape_attempts, neutered, weight_kg)
7 | VALUES (2, 'Gabumon', '2018-11-15', 2, true, 8);
8 |
9 | INSERT INTO animals(id, name, date_of_birth, escape_attempts, neutered, weight_kg)
10 | VALUES (3, 'Pikachu', '2021-01-07', 1, false, 15.04);
11 |
12 | INSERT INTO animals(id, name, date_of_birth, escape_attempts, neutered, weight_kg)
13 | VALUES (4, 'Devimon', '2017-05-12', 5, true, 11);
14 |
15 | INSERT INTO animals (id, name, date_of_birth, escape_attempts, neutered, weight_kg)
16 | VALUES (5, 'Charmander', '2020-02-08', 0, FALSE, -11),
17 | (6, 'Plantmon', '2021-11-15', 2, TRUE, -5.7),
18 | (7, 'Squirtle', '1993-04-02', 3, FALSE, -12.13),
19 | (8, 'Angemon', '2005-06-12', 1, TRUE, -45),
20 | (9, 'Boarmon', '2005-06-07', 7, TRUE, 20.4),
21 | (10, 'Blossom', '1998-10-13', 3, TRUE, 17),
22 | (11, 'Ditto', '2022-05-14', 4, TRUE, 22) ;
23 |
24 | INSERT INTO owners (full_name, age)
25 | VALUES ('Sam Smith', 34),
26 | ('ennifer Orwell', 19),
27 | ('Bob', 45),
28 | ('Melody Pond', 77),
29 | ('Dean Winchester', 14),
30 | ('Jodie Whittaker', 38);
31 |
32 | INSERT INTO species (name)
33 | VALUES ('Pokemon'), ('Digimon');
34 |
35 | UPDATE animals SET species_id = (
36 | CASE
37 | WHEN name LIKE '%mon' THEN (SELECT id FROM species WHERE name = 'Digimon')
38 | ELSE (SELECT id FROM species WHERE name = 'Pokemon')
39 | END
40 | );
41 |
42 | update animals set owner_id = case
43 | when name = 'Agumon' then 1
44 | when name in ('Gabumon', 'Pikachu') then 2
45 | when name in ('Devimon', 'Plantmon') then 3
46 | when name in ('Charmander', 'Squirtle', 'Blossom') then 4
47 | when name in ('Angemon', 'Boarmon') then 5
48 | end;
49 |
50 | insert into vets(name, age, date_of_graduation) values
51 | ('Vet William Tatcher', 45, '2000-04-23'),
52 | ('Vet Maisy Smith', 26, '2019-01-17'),
53 | ('Vet Stephanie Mendez', 64, '1981-05-04'),
54 | ('Vet Jack Harkness', 38, '2008-06-08');
55 |
56 | insert into specializations(species_id, vet_id) values
57 | (1, 1), (1,3), (2,3), (2,4);
58 |
59 | insert into visits(animal_id,vet_id ,date_of_visits) values
60 | (1,1,'2020-05-24'), (1,3,'2020-07-22'), (2,4,'2021-02-02'),
61 | (3,2,'2020-01-05'), (3,2,'2020-03-08'), (3,2,'2020-05-14'),
62 | (4,3,'2021-05-04'), (5,4,'2021-02-24'), (6,2,'2019-12-21'),
63 | (6,1,'2020-08-10'), (6,2,'2021-04-07'), (7,3,'2019-09-29'),
64 | (8,4,'2020-10-03'), (8,4,'2020-11-04'), (9,2,'2019-01-24'),
65 | (9,2,'2019-05-15'), (9,2,'2020-02-27'), (9,2,'2020-08-03'),
66 | (10,3,'2020-05-24'), (10,1,'2021-01-11');
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/README.md:
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1 | # Vet clinic database
2 |
3 | ## Getting Started
4 |
5 | This repository includes files with plain SQL that can be used to recreate a database:
6 |
7 | - Use [schema.sql](./schema.sql) to create all tables.
8 | - Use [data.sql](./data.sql) to populate tables with sample data.
9 | - Check [queries.sql](./queries.sql) for examples of queries that can be run on a newly created database. **Important note: this file might include queries that make changes in the database (e.g., remove records). Use them responsibly!**
10 |
11 |
12 |
13 |
34 |
35 |
36 |
37 |
38 | # 📗 Table of Contents
39 |
40 | - [Vet clinic database](#vet-clinic-database)
41 | - [Getting Started](#getting-started)
42 | - [📗 Table of Contents](#-table-of-contents)
43 | - [📖 Vet clinic database ](#-vet-clinic-database-)
44 | - [🛠 Built With SQL](#-built-with-sql)
45 | - [Tech Stack posgreSQL](#tech-stack-posgresql)
46 | - [Key Features ](#key-features-)
47 | - [💻 Getting Started ](#-getting-started-)
48 | - [Prerequisites](#prerequisites)
49 | - [Setup](#setup)
50 | - [Usage](#usage)
51 | - [👥 Author ](#-author-)
52 | - [🔭 Future Features ](#-future-features-)
53 | - [🤝 Contributing ](#-contributing-)
54 | - [⭐️ Show your support ](#️-show-your-support-)
55 | - [🙏 Acknowledgments ](#-acknowledgments-)
56 | - [📝 License ](#-license-)
57 |
58 |
59 |
60 | # 📖 Vet clinic database
61 |
62 | **Vet clinic database** is a...
63 |
64 | ## 🛠 Built With SQL
65 |
66 | ### Tech Stack posgreSQL
67 |
68 |
69 | Client
70 |
73 |
74 |
75 |
76 | Server
77 |
80 |
81 |
82 |
83 | Database
84 |
87 |
88 |
89 |
90 |
91 | ### Key Features
92 |
93 |
94 | - **SQL**
95 | - **Postgresql**
96 |
97 | (back to top)
98 |
99 |
100 |
101 | ## 💻 Getting Started
102 |
103 | To get a local copy up and running, follow these steps.
104 |
105 | ### Prerequisites
106 |
107 | In order to run this project you need:
108 |
109 | - Install postgreSQL
110 |
111 | ### Setup
112 |
113 | Clone this repository to your desired folder:
114 |
115 | ```sh
116 | cd vet clinic
117 | git clone git@github.com:noelfoka/vet-clinic.git
118 | ```
119 |
120 | ### Usage
121 |
122 | To run the project, execute the following command:
123 |
124 | ```sh
125 | psql
126 | ```
127 |
128 | (back to top)
129 |
130 |
131 |
132 | ## 👥 Author
133 |
134 | 👤 **Noel FOKA**
135 |
136 | - GitHub: [@noelfoka](https://github.com/noelfoka)
137 | - Twitter: [@noelnomgne](https://twitter.com/noelnomgne)
138 | - LinkedIn: [LinkedIn](https://linkedin.com/in/noelfoka)
139 |
140 | (back to top)
141 |
142 |
143 |
144 | ## 🔭 Future Features
145 |
146 | > Describe 1 - 3 features you will add to the project.
147 |
148 | - [ ] **query and update animals table**
149 | - [ ] **query multiple tables**
150 | - [ ] **add 'join table' for visits**
151 |
152 | (back to top)
153 |
154 |
155 |
156 | ## 🤝 Contributing
157 |
158 | Contributions, issues, and feature requests are welcome!
159 |
160 | Feel free to check the [issues page](../../issues/).
161 |
162 | (back to top)
163 |
164 |
165 |
166 | ## ⭐️ Show your support
167 |
168 | If you like this project, give me a 🌟
169 |
170 | (back to top)
171 |
172 |
173 |
174 | ## 🙏 Acknowledgments
175 |
176 | I would like to thank Microverse
177 |
178 | (back to top)
179 |
180 |
181 |
182 | ## 📝 License
183 |
184 | This project is [MIT](./LICENSE) licensed.
185 |
186 | (back to top)
187 |
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/queries.sql:
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1 | /*Queries that provide answers to the questions from all projects.*/
2 |
3 | SELECT * FROM animals WHERE name LIKE '%mon';
4 | SELECT name FROM animals WHERE date_of_birth BETWEEN '2016-01-01' AND '2019-12-31';
5 | SELECT name FROM animals WHERE neutered = true AND escape_attempts < 3;
6 | SELECT date_of_birth FROM animals WHERE name IN ('Agumon', 'Pikachu');
7 | SELECT name, escape_attempts FROM animals WHERE weight_kg > 10.5;
8 | SELECT * FROM animals WHERE neutered = true;
9 | SELECT * from animals WHERE name != 'Gabumon';
10 | SELECT * FROM animals WHERE weight_kg >= 10.4 AND weight_kg <= 17.3;
11 |
12 | /*update the animals table by setting the species column to unspecified.*/
13 |
14 | BEGIN;
15 | UPDATE animals SET species = 'unspecified' ;
16 |
17 | SELECT * FROM animals ;
18 | ROLLBACK;
19 |
20 | SELECT * FROM animals ;
21 |
22 | BEGIN;
23 | UPDATE animals SET species = 'digimon' WHERE name LIKE '%mon';
24 | UPDATE animals SET species = 'pokemon' WHERE species IS NULL;
25 | SELECT * FROM animals ;
26 | COMMIT;
27 | SELECT * FROM animals ;
28 |
29 | /*DELETE ALL RECORDS*/
30 |
31 | BEGIN;
32 | DELETE FROM animals;
33 | SELECT * FROM animals ;
34 | ROLLBACK;
35 | SELECT * FROM animals ;
36 |
37 | /*INSIDE A TRANSACTION DELETE ANIMALS BORN AFTER JAN 1,2022*/
38 | BEGIN;
39 | DELETE FROM animals WHERE date_of_birth > '2022-01-01';
40 | SAVEPOINT ANBORNAFTERJAN12022;
41 | SELECT * FROM animals ;
42 |
43 | /*Update all animals' weight to be their weight multiplied by -1 THEN ROLLBACK TO SAVEPOINT*/
44 | UPDATE animals SET weight_kg = weight_kg * -1 ;
45 | ROLLBACK TO ANIMALBORNAFTERJAN12022;
46 | SELECT * FROM animals ;
47 |
48 | /*Update all animals' weights that are negative to be their weight multiplied by -1.*/
49 | UPDATE animals SET weight_kg = weight_kg * -1 WHERE weight_kg < 0;
50 | COMMIT;
51 | SELECT * FROM animals ;
52 |
53 | SELECT COUNT(*) AS animal_count FROM animals;
54 | SELECT COUNT(*) AS have_not_escaped FROM animals WHERE escape_attempts = 0;
55 | SELECT AVG(weight_kg) AS animals_average_weight FROM animals;
56 | SELECT neutered, SUM(escape_attempts) AS total_escaped_attempts FROM animals GROUP BY neutered;
57 | SELECT species, MIN(weight_kg) AS min_weight, MAX(weight_kg) AS max_weight FROM animals GROUP BY species;
58 | SELECT species, AVG(escape_attempts) AS average_escape_attempts FROM animals WHERE date_of_birth BETWEEN '1990-01-01' AND '2000-12-31' GROUP BY species;
59 |
60 | SELECT name FROM animals JOIN owners ON animals.owner_id = owners.id WHERE owners.full_name = 'Melody Pond';
61 |
62 | SELECT animals.name FROM animals JOIN species ON animals.species_id = species.id WHERE species.name = 'Pokemon';
63 |
64 | SELECT owners.full_name, COALESCE(array_agg(animals.name), '{}':: VARCHAR[]) AS animals_owned
65 | FROM owners
66 | LEFT JOIN animals ON owners.id = animals.owner_id
67 | GROUP BY owners.full_name;
68 |
69 | SELECT species.name AS species_name, COUNT(*) AS animal_count FROM animals JOIN species ON animals.species_id = species.id GROUP BY species.name;
70 |
71 | SELECT animals.name FROM animals JOIN species ON animals.species_id = species.id JOIN owners ON animals.owner_id = owners.id WHERE owners.full_name = 'Jennifer Orwell' AND species.name = 'Digimon';
72 |
73 | SELECT animals.name FROM animals JOIN owners ON animals.owner_id = owners.id WHERE owners.full_name = 'Dean Winchester' AND animals.escape_attempts = 0;
74 |
75 | SELECT owners.full_name, COUNT(*) AS animal_count FROM owners JOIN animals ON owners.id = animals.owner_id GROUP BY owners.full_name ORDER BY animal_count DESC LIMIT 1;
76 |
77 | select a.name, vi.date_of_visits
78 | from animals a
79 | join visits vi on a.id = vi.animal_id
80 | join vets ve on ve.id = vi.vet_id
81 | where ve.name ='Vet William Tatcher'
82 | order by(vi.date_of_visits) desc limit 1;
83 |
84 | select count(distinct(a.name)) as total_seen
85 | from animals a
86 | join visits vi on a.id = vi.animal_id
87 | join vets ve on vi.vet_id = ve.id
88 | where ve.name = 'Vet Stephanie Mendez';
89 |
90 | select ve.name, s.name as specialties
91 | from vets ve
92 | left join specializations sp on ve.id = sp.vet_id
93 | left join species s on s.id = sp.species_id;
94 |
95 | select a.name, vi.date_of_visits
96 | from animals a join visits vi on a.id = vi.animal_id
97 | join vets v on vi.vet_id = v.id
98 | where v.name = 'Vet Stephanie Mendez'
99 | and vi.date_of_visits between '2020-04-01' and '2020-08-30';
100 |
101 | select a.name as most_visited, count(vi.animal_id)
102 | from animals a join visits vi on a.id = vi.animal_id
103 | join vets v on v.id = vi.vet_id
104 | group by(vi.animal_id, a.name)
105 | order by count(vi.animal_id) desc limit 1;
106 |
107 | select a.name, vi.date_of_visits as most_visited
108 | from animals a
109 | join visits vi on a.id = vi.animal_id
110 | join vets v on v.id = vi.vet_id
111 | where v.name = 'Vet Maisy Smith'
112 | order by(vi.date_of_visits) limit 1;
113 |
114 | select a.name,v.name as vet_name, vi.date_of_visits
115 | from animals a join visits vi on a.id = vi.animal_id
116 | join vets v on v.id = vi.vet_id
117 | order by(vi.date_of_visits) desc limit 1;
118 |
119 | select count(*) from visits
120 | join animals on animals.id = visits.animal_id
121 | join species on species.id = animals.species_id
122 | join vets on vets.id = visits.vet_id
123 | left join specializations sp on sp.vet_id = vets.id
124 | where sp.species_id != animals.species_id or sp.species_id is null;
125 |
126 | select species.name, count(species.id)
127 | from species join animals on species.id = animals.species_id
128 | join visits on visits.animal_id = animals.id
129 | join vets on vets.id = visits.vet_id
130 | where vets.name = 'Vet Maisy Smith'
131 | group by(species.id)
132 | order by(species.id) desc limit 1;
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