How to Install And Use SQLite on Ubuntu

Shen Lu

Posted on May 20, 2024

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2 min read (331 words)

Recently, I was developing a new open-source project, Amazing Endemic Species. And I need a database to store the increasing number of species in the future. I choose to use Turso as database. To facilitate testing, I plan to set up a local SQLite environment.

Prerequisites

Ubuntu 22.04

Installing SQLite

First update your package list:

sudo apt update

Install SQLite:

sudo apt install sqlite3

To verify the installation, check the software’s version:

sqlite3 --version
# 3.37.2 2022-01-06 13:25:41 872ba256cbf61d9290b571c0e6d82a20c224ca3ad82971edc46b29818d5dalt1

Creating a SQLite Database

To create the database, open terminal and run this sqlite3 command:

sqlite3 amazing-endemic-species.db

That means I create a database named "amazing-endemic-species" and I will receive an output like this:

SQLite version 3.37.2 2022-01-06 13:25:41
Enter ".help" for usage hints.
sqlite>

Now I will create a schema for amazing-endemic-species.json as below:

[
  {
    "id": 712,
    "sciName": "Ailuropoda melanoleuca",
    "status": "VU",
    "group": "MAMMALIA",
    "code": "CN",
    "commonName": "Giant Panda"
  },
  {
    "id": 16892,
    "sciName": "Phascolarctos cinereus",
    "status": "VU",
    "group": "MAMMALIA",
    "code": "AU",
    "commonName": "Koala"
  }
  // ...
]

Create the Table Schema

CREATE TABLE IF NOT EXISTS aes (
    id INTEGER PRIMARY KEY,
    sciName TEXT NOT NULL UNIQUE,
    status TEXT NOT NULL,
    "group" TEXT NOT NULL, -- Escaped keyword 'group'
    code TEXT NOT NULL,
    commonName TEXT NOT NULL
);

Inserting Data into the Table

Once the table is created, I will insert the data from the JSON objects into the aes table.

INSERT INTO aes (id, sciName, status, "group", code, commonName) VALUES
(712, 'Ailuropoda melanoleuca', 'VU', 'MAMMALIA', 'CN', 'Giant Panda'),
(16892, 'Phascolarctos cinereus', 'VU', 'MAMMALIA', 'AU', 'Koala');

To verify that the data has been imported correctly, you can run a simple SELECT query:

SELECT * FROM aes;
-- 712|Ailuropoda melanoleuca|VU|MAMMALIA|CN|Giant Panda
-- 16892|Phascolarctos cinereus|VU|MAMMALIA|AU|Koala

Drop Schema or Table

If I want to drop the schema and table.

sqlite3 amazing-endemic-species.db "DROP TABLE IF EXISTS aes;"