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Microsoft SQL Server example

This example shows how to connect Prisma to an SQL Server database, create the database schema with Prisma Migrate and use Prisma Client in a Node.js script to read and write data in an SQL Server database.

You can find the Prisma schema in ./prisma/schema.prisma from which the SQL for the database schema is generated.

The example consists of two parts:

  • tests/prisma.test.ts: Jest test (in TypeScript) with a variety of Prisma Client queries and assertions to showcase access patterns
  • src/script.js: Node.js script with queries similar to the ones in the test.

How to use

1. Download example & install dependencies

Clone this repository:

git clone git@github.com:prisma/prisma-examples.git --depth=1

Install npm dependencies:

cd prisma-examples/databases/sql-server
npm install

2. Start SQL Server with Docker Compose

Run the following command from the sql-server folder to start SQL Server:

docker-compose up -d

Note: The docker-compose.yml is where the super admin password is set with the SA_PASSWORD environment variable

3. Configure the database connection URL

Prisma will use the DATABASE_URL environment variable in prisma/.env to connect to the database.

Create the file:

touch prisma/.env

Then add the following line:

DATABASE_URL=sqlserver://localhost:1433;database=prisma-demo;user=SA;password=Pr1sm4_Pr1sm4;trustServerCertificate=true;encrypt=true

Note: DATABASE_URL uses the SA (super admin) user of the database and the same password as defined in docker-compose.yml. In production it's recommend to create a dedicated user with only the necessary permissions.

4. Create the database schema in SQL Server with Prisma Migrate

Now that you have defined the DATABASE_URL in prisma/.env, you will use Prisma Migrate to create a migration file with the SQL necessary to create the database schema.

Run the following command from the sql-server folder:

npx prisma migrate dev --name "init"

You should see the following output:

Your database is now in sync with your schema.

Note: The prisma migrate dev command will automatically generate Prisma Client for use in script.js.

5. Run the tests and script

To run the test in tests/prisma.test.ts, run the following command:

npm run test

To run the script src/script.js, run the following command:

npm run start

As a next step, explore the script.js file to see how to use Prisma Client to read and write data in the database.

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