feat: solved 2nd stage of the Hyperskill project "Electronics Store Customer"

Author: sswietoniowski

hyperskill/16_electronics_store_customer/02/README.md

@@ -0,0 +1,12 @@
+# Objectives
+
+Identify the average `price` of printers having the `Inkjet` type and `C` color from the `Printer` table.
+
+Round the result up to 2 decimal places.
+
+```sql
+SELECT ROUND(AVG(price), 2) AS avg_price
+  FROM Printer
+ WHERE color = 'C'
+   AND type = 'Inkjet';
+```