The function 'pert' in the 'hana_ml.algorithms.pal.random' module draws samples from a PERT distribution, with parameters for database connection, minimum and maximum values, most likely value, scale, number of random data to be generated, seed for random number generator, and thread ratio.
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Here is the executable code template based on the provided help doc:

```python
from hana_ml.algorithms.pal.random import pert
from hana_ml import ConnectionContext

# Create a connection context
cc = ConnectionContext(address='<address>', port='<port>', user='<user>', password='<password>')

# Draw samples from a pert distribution
res = pert(conn_context=cc, minimum=-1, mode=0, maximum=1, num_random=10)

# Collect the result
print(res.collect())
```

Please replace `<address>`, `<port>`, `<user>`, and `<password>` with your actual HANA database connection details.