diff --git a/tech/sql.wiki b/tech/sql.wiki
index 950d8ca..7ec2a4a 100644
--- a/tech/sql.wiki
+++ b/tech/sql.wiki
@@ -97,6 +97,18 @@ If we want to find an average,
 
 `SELECT AVG(price) FROM products`
 
+This same principle applies for
+
+* `MAX`
+* `MIN`
+
+=== GROUP BY ===
+
+`GROUP BY` allows us to combine with the above math and `COUNT` functions by
+grouping totals based upon some other row.
+
+`SELECT Team, COUNT(*) FROM Players GROUP BY Team`
+
 == Views ==
 
 A view can be created with the following command