Global Secondary Indexes in AppSync Schemas (with DynamoDB)

Question

I am creating my AppSync GraphQL schema (with DynamoDB). Here is my current model:

input AMPLIFY {
  globalAuthRule: AuthRule = { allow: public }
} # FOR TESTING ONLY!
type Post
  @model {
  id: ID! @primaryKey(sortKeyFields: ["sk"])
  sk: String!
  title: String!
  featuredPost: String
}

On the base table i want id to be the primary key with the sort key being sk, as seen.

However, I want a global secondary index with the primary key being featuredPost and sort key being title.

• How would I add this to the schema? (AI answers are very inconsistent, and I cant find anything in the AWS Docs)
• Does any reference to a GSI even need to be added to the schema?

Answer 1

You add the index using the console.

Then in your resolver you explicitly tell it which index to use to make that request. Your schema remains unchanged.

More information here