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PostgreSQL (Coming soon)

Discover the power of GraphQL Mesh and PostGraphile with our handler library! Use your PostgreSQL database schema to create a GraphQL schema, and add external plugins for federation, many-to-many, and PostGIS support.

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This handler allows you to use the GraphQL schema created by PostGraphile, based on a PostgreSQL database schema.

To get started, install the handler library:

npm i @omnigraph/postgresql

Now, you can use it directly in your Mesh config file:

mesh.config.ts
import { defineConfig } from '@graphql-mesh/compose-cli'
import { loadPostgreSQLSubgraph } from '@omnigraph/postgresql'

export const composeConfig = defineConfig({
  subgraphs: [
    {
      sourceHandler: loadPostgreSQLSubgraph('MyPostgreSQL', {
        connectionString: 'postgres://postgres:password@localhost/postgres'
        // You can also use environment variables like below
        // connectionString: `postgres://${process.env.POSTGRES_USER}:${process.env.POSTGRES_PASSWORD}@localhost/postgres`
      })
    }
  ]
})

Federation and Automatic Type Merging support

The Federation plugin converts your Postgraphile schema into a federated schema that can also be recognized by Mesh, which brings Automatic Type Merging. It automatically uses @graphile/federation package, so you don’t need to configure it manually.

Many-to-Many support

Suppose you want to have automatic many-to-many mapping across your entities. You can install @graphile-contrib/pg-many-to-many and add it under appendPlugins.

npm i @graphile-contrib/pg-many-to-many

PostGIS Support

If you use PostGIS in your PostgreSQL database, you need to install @graphile/postgis package and add it under appendPlugins.

npm i @graphile/postgis