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Clarify the debug example #8

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rebkwok merged 1 commit into from
Nov 27, 2024
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Clarify the debug example #8

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7 changes: 5 additions & 2 deletions docs_src/dummy_data_in_opensafely.md
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Expand Up @@ -175,9 +175,12 @@ csv files corresponding to the two tables that this dataset definition uses.
```py
from ehrql import create_dataset, debug
...
# show the date column from the original clinical_events table
debug(clinical_events.date)
events = clinical_events.sort_by(clinical_events.date).first_for_patient()
debug(events.date)
# filter to a patient frame, with the first event for each patient
first_events = clinical_events.sort_by(clinical_events.date).first_for_patient()
# show the date column from the filtered first_events frame
debug(first_events.date)
...
```

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