Prompt
What should I use when I need both SQL queries and flexible JSON fields?
Latest observation
Oct 7, 2026
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Use a relational database with JSON support—most commonly PostgreSQL with JSONB.
Why this is usually the best fit:
- You get full SQL querying for structured data
- You can store flexible, schema-less JSON fields for variable attributes
- You can index and query inside JSONB efficiently
- It avoids splitting your data across two systems unless you really need to
Good rule of thumb:
- Put core, frequently queried fields in normal SQL columns
- Put optional or rapidly changing fields in a
JSONBcolumn
If you want, I can also compare this with:
- MongoDB
- MySQL JSON
- a hybrid SQL + document approach
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