class_docstr: Load tables from different files and serve a sql database for database operations
code: def __del__(self):
      if self.sql_engine:
          drop_table(self.sql_engine)
          self.sql_engine.dispose()
          del self.data
          del self.sql_engine
  
file_path: colossalai/applications/ColossalQA/colossalqa/data_loader/table_dataloader.py
imports: import os
  import glob
  import pandas
  from sqlalchemy import create_engine
  from colossalqa.utils import drop_table
  from colossalqa.mylogging import get_logger
label_desc: Use image node_id 5 for calling the TableLoader obj's underlying member method code with example usage: obj.__del__() without return types