Oracle 12c Sql Hands-on: Assignments Solutions

CREATE TABLE emp_analytics AS SELECT department_id, last_name, salary, RANK() OVER (PARTITION BY department_id ORDER BY salary DESC) AS salary_rank FROM employees; Oracle 12c SQL is robust, but the secret to passing hands-on assignments is understanding the subtle differences in windowing functions and the modern Top-N syntax . Always test your OFFSET/FETCH logic on a small subset first to verify sorting order.

SELECT product_id, product_name, list_price FROM oe.product_information WHERE list_price BETWEEN 50 AND 200 AND UPPER(product_name) NOT LIKE '%MONITOR%'; Problem 3: Show the department name, city, and the number of employees working in that department. Include departments with zero employees. oracle 12c sql hands-on assignments solutions

SELECT employee_id, first_name, last_name, hire_date FROM employees WHERE EXTRACT(YEAR FROM hire_date) = 2012 ORDER BY hire_date ASC; You can also use the TO_CHAR method: Include departments with zero employees

SELECT department_id, last_name, salary, RANK() OVER (PARTITION BY department_id ORDER BY salary DESC) AS rank, DENSE_RANK() OVER (PARTITION BY department_id ORDER BY salary DESC) AS dense_rank, ROW_NUMBER() OVER (PARTITION BY department_id ORDER BY salary DESC) AS row_num FROM employees WHERE department_id IS NOT NULL ORDER BY department_id, salary DESC; Find the salary difference between each employee and the next highest paid employee in the same department. Oracle 12c, SQL, Assignments, PL/SQL, Window Functions

Write a query to page through employee data, showing rows 21 to 30 (Offset 20, Fetch 10).

Oracle 12c, SQL, Assignments, PL/SQL, Window Functions