import sys import polars as pl scale_fac = int(sys.argv[1]) h_nation = """ n_nationkey n_name n_regionkey n_comment""".split( "\n" ) h_region = """ r_regionkey r_name r_comment""".split( "\n" ) h_part = """ p_partkey p_name p_mfgr p_brand p_type p_size p_container p_retailprice p_comment""".split( "\n" ) h_supplier = """ s_suppkey s_name s_address s_nationkey s_phone s_acctbal s_comment""".split( "\n" ) h_partsupp = """ ps_partkey ps_suppkey ps_availqty ps_supplycost ps_comment""".split( "\n" ) h_customer = """ c_custkey c_name c_address c_nationkey c_phone c_acctbal c_mktsegment c_comment""".split( "\n" ) h_orders = """ o_orderkey o_custkey o_orderstatus o_totalprice o_orderdate o_orderpriority o_clerk o_shippriority o_comment""".split( "\n" ) h_lineitem = """ l_orderkey l_partkey l_suppkey l_linenumber l_quantity l_extendedprice l_discount l_tax l_returnflag l_linestatus l_shipdate l_commitdate l_receiptdate l_shipinstruct l_shipmode comments""".split( "\n" ) for name in [ "nation", "region", "part", "supplier", "partsupp", "customer", "orders", "lineitem", ]: print("process table:", name) df = pl.scan_csv( f"tables_scale_{scale_fac}/{name}.tbl", has_header=False, separator="|", try_parse_dates=True, with_column_names=lambda _: eval(f"h_{name}"), ) df = df.with_columns([pl.col(pl.Date).cast(pl.Datetime)]) df.sink_parquet(f"tables_scale_{scale_fac}/{name}.parquet")