implement get_oldest_stocks_price

db_operation.py

@@ -1,4 +1,4 @@
- '''
+'''
 Abstraction for saving data to db
 '''
 import pandas as pd
@@ -56,6 +56,10 @@ def _get_oldest(table_name, ts_column='date'):
         df[ts_column] = pd.to_datetime(df[ts_column])
         return df
 
+def get_oldest_stocks_price():
+    df = _get_oldest(ts.STOCKS_PRICE_TABLE, ts_column='time')
+    return df
+
 def get_oldest_portfolio_profile():
     df = _get_oldest(ts.PORTFOLIO_TABLE)
     return df