Tutorial

Learn more about GraphQL and the Hasura GraphQL Engine with our extensive GraphQL Guides and Tutorials on Hasura and GraphQL in general.

Using Custom SQL functions for queries with Postgres and GraphQL

Access custom PostgreSQL functions in GraphQL API queries and subscriptions

GraphQL with Postgres views and materialized views

Postgres views are awesome. You can link them to regular tables using relationships and then make a single nested query to fetch related…

Atomic set and increment operators for GraphQL mutations

Use atomic set and increment operators in GraphQL mutations generated by Hasura GraphQL to update your data

Bulk insert mutations with GraphQL

GraphQL insert mutations are used to create new objects in your back-end (typically a database) which can then be queried.

Postgres JSON and JSONB type support on GraphQL

Hasura GraphQL Engine supports Postgres schema-less (NoSQL) column types JSON and JSONB, enabling Queries, Mutations & Subscriptions over…

Bulk update and delete mutations in GraphQL

Safely update and delete data in your database over GraphQL

Client-side GraphQL schema resolving and schema-stitching

This blogpost talks about the why and how of:

Moving from apollo-boost to GraphQL subscriptions with apollo-client

This is a simple tutorial on how to use GraphQL subscriptions with Apollo.

Use GraphQL subscriptions from your NodeJS code

Setting up your NodeJS code to use GraphQL subscriptions involves going through a few hoops.

Working with schemaless data using GraphQL on Postgres

Exploit Postgres schemaless JSON types in your GraphQL queries using the open-source Hasura GraphQL Engine.

GraphQL and Tree Data Structures with Postgres on Hasura GraphQL engine

Modelling a tree data structure on postgres and using GraphQL to add and get data from the tree.