Lọc nhanh trên dữ liệu đã sắp xếp

result = (
    library
    # Mark date as sorted to enable the fast-path scan
    .____("date")
    # Filter to rows before 2021-01-01
    .filter(pl.col("date") < pl.____(2021, 1, 1))
    # Execute the lazy query
    .____()
)
print(result.head())