Update cte.sql

kdyl · Feb 11, 2022 · f7b369a · f7b369a
1 parent 992570b
commit f7b369a
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/cte.sql b/cte.sql
@@ -5,12 +5,14 @@ WITH all_products AS ( -- count all products per transaction
     FROM transactions
     GROUP BY transaction_id, month
 )
-, electronic_products AS ( -- count phones and computers per transaction
+, electronic_products AS ( -- count phones, computers and monitors per transaction
     SELECT t.transaction_id
           , count(t.product_id) AS count_electronic_products
     FROM transactions t 
     JOIN category c ON t.category_id = c.category_id
-    WHERE c.category_name = 'PHONE' or c.category_name = 'COMPUTER'
+    WHERE c.category_name = 'PHONE' 
+        OR c.category_name = 'COMPUTER'
+        OR c.category_name = 'MONITOR'
     GROUP BY t.transaction_id
 )
 , ratio_electronic_to_all AS ( -- calculate ratio of electronic to all products per transaction