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apache / datafusion

Apache DataFusion SQL Query Engine
https://datafusion.apache.org/
Apache License 2.0
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[EPIC] Support converting Exprs and LogicalPlans --> SQL Strings #9494

Open alamb opened 3 months ago

alamb commented 3 months ago

This ticket tracks various tickets related to converting Exprs and LogicalPlans to/from SQL strings

devinjdangelo commented 3 months ago

I think that we now have a solid enough foundation on these tasks that it would be a good first issue for a new contributor (#9495 especially). An individual or small number of logical Exprs could be handled in a stand alone PR with a test or two. I think this project is a great way to get more familiar with DataFusion's core data structures and optimization algorithms without already having expertise in database internals.

alamb commented 3 months ago

@devinjdangelo do you think we should file explicit follow on tickets, or do you think the existing PRs / documentation is clear enough about the ask (for someone who has no experience with DataFusion)?

I can file tickets if you prefer

devinjdangelo commented 3 months ago

@alamb I don't think we should file a ticket for every remaining Expr variant, but we could edit the description of #9495 to list the remaining unimplemented variants and make clear that we are looking for help for anyone interested to implement even just 1 at a time in a PR + write a test.

Here is the remaining list:

alamb commented 3 months ago

@alamb I don't think we should file a ticket for every remaining Expr variant, but we could edit the description of #9495 to list the remaining unimplemented variants and make clear that we are looking for help for anyone interested to implement even just 1 at a time in a PR + write a test.

Thank yoU @devinjdangelo -- I filed https://github.com/apache/arrow-datafusion/issues/9726