Based on PR #999: Add SQL support for multiple DataFrames#1150
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matreyes wants to merge 4 commits intoelixir-explorer:mainfrom
Open
Based on PR #999: Add SQL support for multiple DataFrames#1150matreyes wants to merge 4 commits intoelixir-explorer:mainfrom
matreyes wants to merge 4 commits intoelixir-explorer:mainfrom
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Implements simplified SQL API proposed by Jose Valim that allows executing SQL queries across multiple DataFrames using a map. Features: - New sql/2 function accepts a map of table names to DataFrames - Backward compatible with existing sql/2 and sql/3 for single DataFrame - Uses Polars SQLContext internally for query execution - Supports JOINs, LEFT JOINs, aggregations, and other SQL operations - Comprehensive test suite with 20 tests Based on PR elixir-explorer#999 but simplified per Jose Valim's suggestion for a cleaner API.
Remove backward-compatible sql/2 and sql/3 for single DataFrame. Now sql/2 consistently accepts a map of table names to DataFrames, making the API simpler and more consistent.
- Add callback to Explorer.Backend.DataFrame behaviour - Implement in Explorer.PolarsBackend.DataFrame and LazyFrame - Remove callback from Explorer.Backend - Update sql/2 to pick backend from first DataFrame or use default for empty tables
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Hi team!
I have an use case for SQL API, so wondered if you are interested in reevaluate the PR #999, but with the API proposed by @josevalim that allows executing SQL queries across multiple DataFrames using a map.