Text2SQL or Semantic Layer? A Practitioner Dilemma for Data Agent Architecture
Academic-Tie6223 · reddit · 2026-08-22
A developer building a data agent for Bayeslab lays out the trade-off:
- Text2SQL: faster to build and more flexible for open-ended questions, but risks inconsistent metrics, complex joins, and schema-change brittleness.
- Semantic layer: reliable business logic and metric consistency, at the cost of more setup and maintenance.
They ask practitioners which worked better in production: raw Text2SQL, or Text2SQL on top of a semantic layer?
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