Nim SQLite

Introduction to Nim and SQLite

Nim is a versatile, statically typed compiled systems programming language. It is known for its performance and expressiveness. SQLite is a C library that provides a lightweight disk-based database. It doesn’t require a separate server process, making it a popular choice for local database storage in applications.

In this guide, we will explore how you can use the db_sqlite package in Nim to perform local database queries with SQLite.

Setting Up the Environment

Before you start, ensure you have Nim installed on your system. You can download it from the official Nim website. After installation, you can add the SQLite package by using Nimble, Nim's package manager.

Connecting to an SQLite Database

Once you have installed the db_sqlite package, you can connect to an SQLite database. The following code snippet demonstrates how to open a connection to a database file called example.db.

Executing SQL Queries

After establishing a connection, you can execute SQL queries. Here is how you can create a table named users with columns id and name.

Inserting Data into the Database

Inserting data into your SQLite database can be done using the exec method. Here, we insert a new user into the users table.

Querying Data from the Database

To retrieve data from your database, use the query method. The following example retrieves all entries from the users table and prints them.

Closing the Database Connection

It is important to close the database connection after your operations are complete to ensure all resources are properly released. The defer block in Nim can be used to automatically close the connection when the block exits.