yobx.sql.polars_convert

polars LazyFrame → ONNX converter.

Converts a polars.LazyFrame execution plan (as returned by LazyFrame.explain()) into a self-contained ONNX model by translating the polars logical plan into a SQL query that is then processed by sql_to_onnx().

Supported polars operations

• Column selection (select)

• Row filtering (filter)

• Arithmetic binary expressions: +, -, *, /

• Comparison predicates: >, <, >=, <=, ==, !=

• Compound predicates: & (AND), | (OR)

• Aggregations via methods: .sum(), .mean() (→ AVG), .min(), .max(), .count()

• Column aliases via .alias(...)

• group_by / agg