SQL functions like COUNT(), SUM(), AVG(), MIN(), and MAX() allow you to summarize and calculate data directly in your queries. Example: This counts patients on warfarin. 💡 Future clinical idea: Use AVG() to calculate the average length of stay for patients on a specific antibiotic regimen to track stewardship outcomes.
Tag: Pharmacy Informatics
SQL Joins Basics
The INNER JOIN lets you combine related data from multiple tables. It’s a core SQL concept for connecting information. By using INNER JOIN, you ensure that only the records with matching values in both tables are retrieved, which helps maintain data integrity and relevance. For those looking to deepen their understanding of database interactions, sql…
Filtering Data in SQL
One of the first essential skills in SQL is filtering data with the WHERE clause. It’s how you narrow your results to exactly what you need. Example: This query shows only patients older than 65. In the future, I could use this approach to quickly find all geriatric patients on a high-risk medication to support…