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from datetime import datetime |
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import polars as pl |
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from polars_queries import utils |
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Q_NUM = 20 |
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def q(): |
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line_item_ds = utils.get_line_item_ds() |
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nation_ds = utils.get_nation_ds() |
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supplier_ds = utils.get_supplier_ds() |
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part_ds = utils.get_part_ds() |
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part_supp_ds = utils.get_part_supp_ds() |
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var_1 = datetime(1994, 1, 1) |
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var_2 = datetime(1995, 1, 1) |
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var_3 = "CANADA" |
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var_4 = "forest" |
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res_1 = ( |
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line_item_ds.filter( |
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pl.col("l_shipdate").is_between(var_1, var_2, closed="left") |
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) |
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.group_by("l_partkey", "l_suppkey") |
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.agg((pl.col("l_quantity").sum() * 0.5).alias("sum_quantity")) |
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) |
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res_2 = nation_ds.filter(pl.col("n_name") == var_3) |
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res_3 = supplier_ds.join(res_2, left_on="s_nationkey", right_on="n_nationkey") |
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q_final = ( |
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part_ds.filter(pl.col("p_name").str.starts_with(var_4)) |
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.select(pl.col("p_partkey").unique()) |
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.join(part_supp_ds, left_on="p_partkey", right_on="ps_partkey") |
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.join( |
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res_1, |
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left_on=["ps_suppkey", "p_partkey"], |
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right_on=["l_suppkey", "l_partkey"], |
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) |
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.filter(pl.col("ps_availqty") > pl.col("sum_quantity")) |
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.select(pl.col("ps_suppkey").unique()) |
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.join(res_3, left_on="ps_suppkey", right_on="s_suppkey") |
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.with_columns(pl.col("s_address").str.strip_chars()) |
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.select(["s_name", "s_address"]) |
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.sort("s_name") |
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) |
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utils.run_query(Q_NUM, q_final) |
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if __name__ == "__main__": |
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q() |
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