### Elevator pitch ### What does the transformation do? <!-- Give a representative SQL query. --> ### Why should we add it? ### When would it be good to have? ### When would it be ineffectual? ### When would be bad to have? ### In the worst case, how would it degrade performance? ### Customer impact _No response_ ### Cost model ### What is the benefit of the transformation? ### What is the overhead? ### When would the transformation be worthwhile? <!-- Intuitively, this should be when benefit > overhead, but sometimes a benefit with regards to X comes at a cost with regards to Y, and it would be worthwhile to discuss when it is worthwhile to sacrifice Y to gain a benefit in X. --> ### User-facing changes _No response_ ### Proposed implementation ### Describe the implementation. ### Which queries will do better with the given implementation? ### Which queries will do worse? ### Break the implementation down into stages.
Elevator pitch
What does the transformation do?
Why should we add it?
When would it be good to have?
When would it be ineffectual?
When would be bad to have?
In the worst case, how would it degrade performance?
Customer impact
No response
Cost model
What is the benefit of the transformation?
What is the overhead?
When would the transformation be worthwhile?
User-facing changes
No response
Proposed implementation
Describe the implementation.
Which queries will do better with the given implementation?
Which queries will do worse?
Break the implementation down into stages.