Set operators: UNION, INTERSECT, and EXCEPT, help combine or compare query results. Example: This merges patients from both lists. 💡 Future clinical idea: Use INTERSECT to identify patients who are both in a high-risk med list and have a recent adverse event record.
Tag: INTERSECT
Set Operators in SQL (UNION, INTERSECT, EXCEPT)
Learning set operators in SQL today reminded me of Venn diagrams. They let you combine or compare results from multiple queries: 💡 Practical Example Idea: Compare medication order lists between two facilities to see common treatments (INTERSECT) or unique ones (EXCEPT). For now, it’s just theory and small sample data, but I’m starting to picture…