백제완: [SQL] Confirmation Rate_241018

Author: jewan100

SQL/06주차/JW_Confirmation_Rate.sql

@@ -0,0 +1,9 @@
+SELECT
+    A.user_id
+    , ROUND(AVG(IF(B.action = 'confirmed', 1, 0)), 2) confirmation_rate
+FROM
+    Signups A
+    LEFT JOIN Confirmations B
+        ON A.user_id = B.user_id
+GROUP BY
+    A.user_id