code: def postgresql_load_data_in_file(
      table: str, full_path_wildcard: str, cursor, cnx
  ):
      cols = get_column_names(table)
      h = ""
      b = ""
      for i, c in enumerate(cols):
          h = h + "@" + c
          hj = "%s = NULLIF(@%s,'null')" % (c, c)
          b = b + hj
          if i + 1 != len(cols):
              h = h + ",\n"
              b = b + ",\n"
  
      a = glob.glob(full_path_wildcard)
      for fi in a:
          with open(fi, "r") as csvFile:
              copy(cursor, csvFile, table)
              cnx.commit()
      print("load data done!")
  
file_path: blazingsql/tests/BlazingSQLTest/DataBase/postgreSQLSchema.py
imports: import os
  import glob
  from .createSchema import get_sql_connection, get_column_names, sql_connection
  from blazingsql import DataType
  import psycopg2
label_desc: Use image node_id 3 for calling a global function with example usage: postgresql_load_data_in_file(table, full_path_wildcard, cursor, cnx) without return types