Generating dummy output data

In this section, you will generate dummy output data.

Exit the sandbox

Exit the sandbox and return to the terminal.

>>> quit()

Generate dummy output data

In the terminal, type

opensafely exec ehrql:v0 generate-dataset dataset_definition.py

and press Enter.

The terminal will fill with dummy output data in CSV format. Scroll up to see the column headers; notice that two column headers correspond to the two patient series — asthma_med_date and asthma_med_code — that you added to the dataset definition.

Also notice the lines that start with [info]. These show that the dummy data generator generated dummy data for 5,000 patients; found 500 that matched the dataset definition; and displayed them in the terminal.

Congratulations!

Congratulations! You have completed the tutorial.