sudoku

Author: letsdeepchat

SORTING AND GROUP/1070. Product Sales Analysis III.sql

@@ -0,0 +1,10 @@
+# Write your MySQL query statement below
+SELECT product_id, year as first_year, quantity, price
+FROM Sales
+WHERE (product_id, year) 
+IN (SELECT product_id,
+        min(year)
+    FROM Sales
+    GROUP BY
+        product_id
+    )