import Npm from '@mdx/Npm.astro'; import Npx from '@mdx/Npx.astro'; import Callout from '@mdx/Callout.astro'; import Prerequisites from "@mdx/Prerequisites.astro"; import CodeTabs from "@mdx/CodeTabs.astro"; import WhatsNextPostgres from "@mdx/WhatsNextPostgres.astro"; import Breadcrumbs from '@mdx/Breadcrumbs.astro'; import FileStructure from '@mdx/get-started/FileStructure.mdx'; import InstallPackages from '@mdx/get-started/InstallPackages.mdx'; import SetupConfig from '@mdx/get-started/SetupConfig.mdx'; import TransferCode from '@mdx/get-started/TransferCode.mdx'; import QueryDatabase from '@mdx/get-started/QueryDatabase.mdx'; import QueryDatabaseUpdated from '@mdx/get-started/QueryDatabaseUpdated.mdx'; import RunFile from '@mdx/get-started/RunFile.mdx'; import ApplyChanges from '@mdx/get-started/ApplyChanges.mdx'; import SetupEnv from '@mdx/get-started/SetupEnv.mdx'; import IntrospectPostgreSQL from '@mdx/get-started/postgresql/IntrospectPostgreSQL.mdx'; import ConnectBun from '@mdx/get-started/postgresql/ConnectBun.mdx'; import UpdateSchema from '@mdx/get-started/postgresql/UpdateSchema.mdx';

Get Started with Drizzle and SQLite in existing project

<Prerequisites> - **dotenv** - package for managing environment variables - [read here](https://www.npmjs.com/package/dotenv) - **bun** - javaScript all-in-one toolkit - [read here](https://bun.sh/) - **Bun SQL** - native bindings for working with PostgreSQL databases - [read here](https://bun.sh/docs/api/sql) </Prerequisites> <Callout type='error'> In version `1.2.0`, Bun has issues with executing concurrent statements, which may lead to errors if you try to run several queries simultaneously. We've created a [github issue](https://github.com/oven-sh/bun/issues/16774) that you can track. Once it's fixed, you should no longer encounter any such errors on Bun's SQL side </Callout> <FileStructure />

Step 1 - Install required packages

<Npm> drizzle-orm dotenv -D drizzle-kit @types/bun </Npm>

Step 2 - Setup connection variables

Step 3 - Setup Drizzle config file

Step 4 - Introspect your database

Step 5 - Transfer code to your actual schema file

Step 6 - Connect Drizzle ORM to the database

Step 7 - Query the database

Step 8 - Run index.ts file

To run a script with bun, use the following command:

bash

bun src/index.ts

Step 9 - Update your table schema (optional)

Step 9 - Applying changes to the database (optional)

Step 10 - Query the database with a new field (optional)