count_salary_categories.sql

Author: stackcats

database/medium/count_salary_categories.sql

@@ -0,0 +1,8 @@
+-- Write your PostgreSQL query statement below
+SELECT UNNEST(ARRAY ['High Salary', 'Low Salary', 'Average Salary']) category,
+       UNNEST(ARRAY [
+        COUNT(1) FILTER (WHERE income > 50000), 
+        COUNT(1) FILTER (WHERE income < 20000) ,
+        COUNT(1) FILTER (WHERE income BETWEEN 20000 AND 50000)
+       ])                                                            accounts_count
+FROM accounts