Create product-sales-analysis-iii.sql

kamyu104 · web-flow · commit 8bb9dda36422 · 2019-06-02T16:59:45.000+08:00
diff --git a/MySQL/product-sales-analysis-iii.sql b/MySQL/product-sales-analysis-iii.sql
@@ -0,0 +1,10 @@
+# Time:  O(n) 
+# Space: O(n) 
+
+SELECT product_id, 
+       Min(year) AS first_year, 
+       quantity, 
+       price 
+FROM   sales 
+GROUP  BY product_id 
+ORDER  BY NULL 
