Aggregate functions help turn large datasets into simple summaries used across many fields. GROUP BY and HAVING allow structured grouping and filtering of data for clearer reports. Functions like ...
Instructions: Use the provided sample database tables (patients, providers, visits, ed_visits, admissions, discharges) to answer the following questions. Write SQL queries to perform grouping and ...
When working with a CSV and d3 we found that we wanted to leverage the existing information to create some aggregated information. We needed averages based on the names within a row. We needed to ...
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