Understanding the new JSON capabilities in Postgres 16

Postgres 16, now supported by Neon, introduces significant enhancements for handling JSON data, including the expanded SQL/JSON syntax with functions like JSON_ARRAY() and JSON_ARRAYAGG(), as well as the IS JSON predicate. JSON_ARRAY() constructs JSON arrays from a series of values or query results, while JSON_ARRAYAGG() operates as an aggregate function to compile input values into a single JSON array. The IS JSON predicate enables checking if expressions can be parsed as JSON, identifying their types such as scalar, object, or array. These new features, some contributed by the Neon Postgres team, aim to improve performance and the developer experience. Neon encourages users to explore these capabilities and engage with their community for further feedback and discussion.

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