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SELECT *
FROM stocks
WHERE price = 30;

SELECT ISIN, name_id, price FROM stocks
WHERE NOT (name_id = ’AKAM’ AND price = 30);

The following statement selects from subqueries in the FROM clause and gives
departments’ total employees and salaries as a decimal value of all the departments:

SELECT a.department_id “Department”,
a.num_emp/b.total_count “%_Employees”,
a.sal_sum/b.total_sal “%_Salary”
FROM
(SELECT department_id, COUNT(*) num_emp, SUM(salary) sal_sum
FROM employees
GROUP BY department_id) a,
(SELECT COUNT(*) total_count, SUM(salary) total_sal
FROM employees) b;

Quelle Oracle 9i SQL – Reference