graphile-upsert-plugin

This postgraphile plugin adds root level mutations for upserting with an equivalent API to the standard Create/Update mutations (upsert${Table}) using postgres INSERT INTO ON CONFLICT UPDATE statements. It includes:
* A single record mutation index.js (original)
--append-plugins graphile-upsert-plugin
* batch.js, which accepts a non-empty list of records
--append-plugins graphile-upsert-plugin/batch
* batch-allow-empty.js which is the same but with empty values allowed
--append-plugins graphile-upsert-plugin/batch-allow-empty
The last two are the exact same, eventually the difference will just be a configuration but for now they're copy-pasted

If you add both via --append-plugins graphile-upsert-plugin,graphile-upsert-plugin/batch, your schema should look something like:

``graphql
"""All input for the upsert Event batch mutation."""


...

input UpsertEventBatchInput {
clientMutationId: String

"""
The Events to be upserted by this mutation. Expects all records to conform to the structure of the first.
"""
events: [EventInput!]!
}

...

type Mutation {
# ...

"""Upserts a single Event."""
upsertEvent(
"""
The exclusive input argument for this mutation. An object type, make sure to see documentation for this object’s fields.
"""
input: UpsertEventInput!
): UpsertEventPayload

"""Upserts a batch of Events."""
upsertEventBatch(
"""
The exclusive input argument for this mutation. An object type, make sure to see documentation for this object’s fields.
"""
input: UpsertEventBatchInput!
): UpsertEventBatchPayload

# ...
}

...


``