Postgres 15 introduces a new syntax to treat nulls as not distinct. This will allow developers to create a unique constraint on nullable fields and have inserts with nulls fail instead of having it allowed based on today's standard.
Fundamentals of Networking for Effective Backends udemy course (link redirects to udemy with coupon)
https://network.husseinnasser.com
Fundamentals of Database Engineering udemy course (link redirects to udemy with coupon)
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https://blog.rustprooflabs.com/2022/07/postgres-15-unique-improvement-with-null
https://www.postgresql.org/message-id/flat/84e5ee1b-387e-9a54-c326-9082674bde78%40enterprisedb.com
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