如果满足条件，如何在MySQL中选择一行，如果不满足条件，如何选择另一行？

SELECT 
    id,
    name,
    position,
    CASE 
        WHEN position = 'Manager' THEN salary * 1.1
        ELSE salary
    END AS adjusted_salary
FROM 
    employees
WHERE 
    id = (CASE 
            WHEN position = 'Manager' THEN (SELECT id FROM employees WHERE position = 'Manager' LIMIT 1)
            ELSE (SELECT id FROM employees WHERE position != 'Manager' LIMIT 1)
          END);

IF(expr1, expr2, expr3)

SELECT 
    id,
    name,
    position,
    IF(position = 'Manager', salary * 1.1, salary) AS adjusted_salary
FROM 
    employees
WHERE 
    id = IF(position = 'Manager', (SELECT id FROM employees WHERE position = 'Manager' LIMIT 1), (SELECT id FROM employees WHERE position != 'Manager' LIMIT 1));