advanced~3h
JSON Columns — PostgreSQL JSONB & MySQL JSON with Hibernate
Not every field has a fixed shape at design time — JSON columns are the deliberate escape hatch for genuinely variable, evolving data, now natively supported by Hibernate 6 without needing a third-party conversion library.
Learning objectives
- Map a Java field to a native JSONB/JSON column using Hibernate 6's @JdbcTypeCode.
- Query into nested JSON structure and explain why indexing it matters for performance.
- Decide correctly when data belongs in a JSON column versus as proper relational columns.
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JSON Columns — PostgreSQL JSONB & MySQL JSON with Hibernate