leetcode

0 SELECT "Low Salary" AS category,

1 SUM(income < 20000) AS accounts_count

2 FROM Accounts

3 UNION

4 SELECT "Average Salary",

5 SUM(income >= 20000 AND income <= 50000)

6 FROM Accounts

7 UNION

8 SELECT "High Salary",

9 SUM(income > 50000)

10 FROM Accounts