dask_queries/q6.py

import datetime

import pandas as pd

from dask_queries import utils

Q_NUM = 6


def q():
    date1 = datetime.datetime.strptime("1994-01-01", "%Y-%m-%d")
    date2 = datetime.datetime.strptime("1995-01-01", "%Y-%m-%d")
    var3 = 24

    line_item_ds = utils.get_line_item_ds

    # first call one time to cache in case we don't include the IO times
    line_item_ds()

    def query():
        nonlocal line_item_ds
        line_item_ds = line_item_ds()

        lineitem_filtered = line_item_ds.loc[
            :, ["l_quantity", "l_extendedprice", "l_discount", "l_shipdate"]
        ]
        sel = (
            (lineitem_filtered.l_shipdate >= date1)
            & (lineitem_filtered.l_shipdate < date2)
            & (lineitem_filtered.l_discount >= 0.05)
            & (lineitem_filtered.l_discount <= 0.07)
            & (lineitem_filtered.l_quantity < var3)
        )

        flineitem = lineitem_filtered[sel]
        result_value = (
            (flineitem.l_extendedprice * flineitem.l_discount).sum().compute()
        )
        result_df = pd.DataFrame({"revenue": [result_value]})
        return result_df

    utils.run_query(Q_NUM, query)


if __name__ == "__main__":
    q()