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Consider the tables with their respective fields below:employees: emp_id, dept_id, manager_id, last_namedepartments: dept_id, manager_id, dept_name, location_idYou want to create a report displaying employees last names, department names and locations, Which query should you use to create an INNER JOIN?1 point54321 ON e.dept_id = d.dept_id;JOIN departments dFROM employees eSELECT e.last_name, d.dept_name, d.location_id

Question

Consider the tables with their respective fields below:employees: emp_id, dept_id, manager_id, last_namedepartments: dept_id, manager_id, dept_name, location_idYou want to create a report displaying employees last names, department names and locations, Which query should you use to create an INNER JOIN?1 point54321 ON e.dept_id = d.dept_id;JOIN departments dFROM employees eSELECT e.last_name, d.dept_name, d.location_id

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Solution

The correct query to create an INNER JOIN would be:

SELECT e.last_name, d.dept_name, d.location_id
FROM employees e
JOIN departments d
ON e.dept_id = d.dept_id;

This query works as follows:

  1. SELECT e.last_name, d.dept_name, d.location_id: This line is selecting the fields that will be displayed in the report. It's selecting the last_name field from the employees table, and the dept_name and location_id fields from the departments table.

  2. FROM employees e: This line is specifying the first table that we're using for the join, which is the employees table. The e after employees is an alias for the employees table, which makes the query easier to read and write.

  3. JOIN departments d: This line is specifying the second table that we're using for the join, which is the departments table. The d after departments is an alias for the departments table.

  4. ON e.dept_id = d.dept_id;: This line is specifying the condition for the join. It's saying that we should match rows from the employees and departments tables where the dept_id field is the same in both tables.

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