| import polars as pl | |
| from polars_queries import utils | |
| Q_NUM = 2 | |
| def q(): | |
| var_1 = 15 | |
| var_2 = "BRASS" | |
| var_3 = "EUROPE" | |
| region_ds = utils.get_region_ds() | |
| nation_ds = utils.get_nation_ds() | |
| supplier_ds = utils.get_supplier_ds() | |
| part_ds = utils.get_part_ds() | |
| part_supp_ds = utils.get_part_supp_ds() | |
| result_q1 = ( | |
| part_ds.join(part_supp_ds, left_on="p_partkey", right_on="ps_partkey") | |
| .join(supplier_ds, left_on="ps_suppkey", right_on="s_suppkey") | |
| .join(nation_ds, left_on="s_nationkey", right_on="n_nationkey") | |
| .join(region_ds, left_on="n_regionkey", right_on="r_regionkey") | |
| .filter(pl.col("p_size") == var_1) | |
| .filter(pl.col("p_type").str.ends_with(var_2)) | |
| .filter(pl.col("r_name") == var_3) | |
| ).cache() | |
| final_cols = [ | |
| "s_acctbal", | |
| "s_name", | |
| "n_name", | |
| "p_partkey", | |
| "p_mfgr", | |
| "s_address", | |
| "s_phone", | |
| "s_comment", | |
| ] | |
| q_final = ( | |
| result_q1.group_by("p_partkey") | |
| .agg(pl.min("ps_supplycost").alias("ps_supplycost")) | |
| .join( | |
| result_q1, | |
| left_on=["p_partkey", "ps_supplycost"], | |
| right_on=["p_partkey", "ps_supplycost"], | |
| ) | |
| .select(final_cols) | |
| .sort( | |
| by=["s_acctbal", "n_name", "s_name", "p_partkey"], | |
| descending=[True, False, False, False], | |
| ) | |
| .limit(100) | |
| .with_columns(pl.col(pl.datatypes.Utf8).str.strip_chars().name.keep()) | |
| ) | |
| utils.run_query(Q_NUM, q_final) | |
| if __name__ == "__main__": | |
| q() | |