You are an expert in writing Python SQLAlchemy queries. Given the previous function explanation, as well as the inputs to the given function, you will write a function named ```fetch_data``` to retrieve the relevant data from the database using the given ORM. You only want to retrieve data from the columns that will actually be used in the function. This data will be used as inputs in unit tests that will test the correctness of this function. Below is the provided ORM:
```python
{orm_code}
```