JavaScript (Web Browser)¶

GlueSQL is a SQL database engine written in Rust, compiled to WebAssembly, and can be used in JavaScript. This guide will walk you through the process of installing and using the GlueSQL package.

Installation¶

Installing GlueSQL is as simple as running the following command:

npm install gluesql

In your package.json, it will be added to the dependencies list as follows:

{
  "dependencies": {
    "gluesql": "latest"
  }
}

Usage¶

GlueSQL can be used in different environments. Here we will look at how to use it with JavaScript modules, Webpack, and Rollup.

JavaScript Modules¶

In an HTML file, you can use GlueSQL by importing it with a script tag:

<script type="module">
  import { gluesql } from 'gluesql';

  async function main() {
    const db = await gluesql();
    await db.loadIndexedDB();

    const result = await db.query(`
      CREATE TABLE Foo (id INTEGER) ENGINE = memory;
      INSERT INTO Foo (1, 'glue'), (2, 'sql');
      SELECT * FROM Foo;
    `);

    console.log(result);
   }
</script>

Webpack¶

For Webpack, the usage is almost the same as JavaScript modules:

import { gluesql } from 'gluesql';

async function run() {
  const db = await gluesql();
  await db.loadIndexedDB();

  const result = await db.query(`
    CREATE TABLE Foo (id INTEGER) ENGINE = memory;
    INSERT INTO Foo VALUES (1, 'glue'), (2, 'sql');
    SELECT * FROM Foo;
  `);

  console.log(result);
}

Rollup¶

For Rollup, you need to adjust your import statement and add some configurations to your rollup.config.js file.

First, modify your import statement as follows:

import { gluesql } from 'gluesql/gluesql.rollup';
// ...

Second, add the following configurations to your rollup.config.js file:

import resolve from '@rollup/plugin-node-resolve';
import { wasm } from '@rollup/plugin-wasm';

export default {
  input: 'main.js',
  output: {
    file: 'dist/bundle.js',
    format: 'iife',
  },
  plugins: [
    resolve({ browser: true }),
    wasm({ targetEnv: 'auto-inline' }),
  ],
};

These configurations allow Rollup to correctly handle WebAssembly modules and resolve dependencies for browsers.

Don't forget to run the rollup command to bundle your JavaScript files:

rollup -c

Now, you can use GlueSQL in your Rollup project as you would in any other JavaScript module.

Supported Storage Engines¶

GlueSQL supports four storage types: In-Memory Storage, Local Storage, Session Storage, and IndexedDB.

You can specify the storage type when creating a table using the ENGINE clause:

• For In-Memory Storage: ENGINE = memory
• For Local Storage: ENGINE = localStorage
• For Session Storage: ENGINE = sessionStorage
• For IndexedDB: ENGINE = indexedDB

For example:

CREATE TABLE Foo (id INTEGER) ENGINE = memory;