Along with some other nodes I‘d like to have a user node. Every user has an username which has to be unique. Is it possible to achieve this in Dgraph?

If you use graphql APIs, the id Directive is directly supported as a schema option to mark uniqueness for fields like username. https://graphql.dgraph.io/doc/schema/ids

Unique constraint

Users GraphQL

anand (Anand Chandrashekar) August 5, 2020, 11:38am 5

Not supported yet, but in the works. Please see this thread for reference.

1 Like

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IDs - Graphql Documentation	5	1342	March 4, 2021
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Unique constraint

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