code: def load_orders(fpath):
      cols_names = [
          "O_ORDERKEY",
          "O_CUSTKEY",
          "O_ORDERSTATUS",
          "O_TOTALPRICE",
          "O_ORDERDATE",
          "O_ORDERPRIORITY",
          "O_CLERK",
          "O_SHIPPRIORITY",
          "O_COMMENT",
      ]
      cols = {
          "O_ORDERKEY": np.int64,
          "O_CUSTKEY": np.int64,
          "O_ORDERSTATUS": str,
          "O_TOTALPRICE": np.float64,
          "O_ORDERDATE": np.int64,
          "O_ORDERPRIORITY": str,
          "O_CLERK": str,
          "O_SHIPPRIORITY": np.int64,
          "O_COMMENT": str,
      }
      rel = pd.read_csv(
          fpath,
          sep="|",
          header=None,
          names=cols_names,
          dtype=cols,
          parse_dates=[4],
      )
      return rel
  
file_path: mars/benchmarks/tpch/loader.py
imports: import numpy
  import pandas
label_desc: Use image node_id 4 for calling a global function with example usage: load_orders(fpath) and returns: rel