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5.7.0

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Highlights

✨ In this release, we improved the SQL queries Prisma Client generates for you with two new Preview features, the driver adapters, and support for the database drivers we currently support. 5.7.0 will be the last release of the year. Stay tuned for the next one in January! ✨

Preview support for JOINs for relation queries for PostgreSQL and CockroachDB

We’re excited to announce Preview support for JOINs in Prisma Client when querying relations. Support for JOINs has been a long-standing feature request, and this release adds support for PostgreSQL and CockroachDB. The upcoming releases will expand support for other databases Prisma supports.

To get started using JOINs, enable the Preview feature in your Prisma schema:

// schema.prisma
generator client {
  provider        = "prisma-client-js"
  previewFeatures = ["relationJoins"]
}

Run prisma generate to regenerate Prisma Client and enable the Preview feature.

Prisma Client will use a JOIN in your query to fetch relation data for a majority of the cases.

Example queries

Prisma Client query

await prisma.user.findUnique({
	where: {
		id: 1
	},
	include: {
		profile: true
	}
})

SQL

SELECT
	"t1"."id",
	"t1"."name",
</tr></table> 

... (truncated)

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