ethan-tyler opened a new issue, #19617: URL: https://github.com/apache/datafusion/issues/19617
### Is your feature request related to a problem or challenge? With #19142 merged, DataFusion has TableProvider hooks for DELETE and UPDATE. This epic tracks the remaining DML statements needed for a complete SQL surface. Currently missing: - **MERGE INTO** - downstream projects have to decompose this themselves - **INSERT OVERWRITE** - important for partition replacement workflows - **TRUNCATE TABLE** - currently requires DELETE WHERE true ### Describe the solution you'd like **MERGE statement:** - sqlparser-rs already parses MERGE (Statement::Merge) - Add LogicalPlan::Merge node - Physical planning via decomposition to existing DELETE/UPDATE/INSERT hooks - TableProvider::merge_into() for storage-native implementations **INSERT OVERWRITE:** - Extend insert_into() or add separate hook - Support static and dynamic partition overwrite modes **TRUNCATE:** - Add TableProvider::truncate() hook - More efficient than full table scan + delete **ON CONFLICT (nice-to-have):** - PostgreSQL-style INSERT ... ON CONFLICT DO UPDATE/NOTHING - Lower priority- rounds out the DML surface ### Describe alternatives you've considered Downstream projects can continue implementing MERGE decomposition themselves. Works, but duplicates planning logic across integrations and pushes SQL semantics outside the query engine. ### Additional context Related issues for context: - #19142 - #12406 - #16959 Happy to take this on if there's interest! -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
