Hi, is there any way to have unique fields using DQL?

Hi can u explain what do you mean in “unique”? If you want a predicate (field) to have unique values in each node you can use the @upsert directive and use the upsert mutation instead of regular mutation to insert unique data each time.

Unique constraint in DQL

Users Dgraph

mhd21 (mohammad) February 15, 2021, 6:53pm 3

Thank you for replying.
for example, I want usernames to be unique in my application

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Unique constraint in DQL

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