SQLQuokkaSQLQuokkaA bank groups monthly income into three bands: 'Low Salary' for income strictly below 20000, 'Average Salary' for income from 20000 to 50000 inclusive, and 'High Salary' for income strictly above 50000. All three bands must appear in the report, even when a band has no accounts. Write an SQL query that returns category and accounts_count. The rows can be in any order.
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