﻿ SQL SUBQUERIES: Find out which employees work in the Marketing department - w3resource

# SQL Subquery Exercises: Display the first and last name, and department code for all employees who work in the department Marketing

## SQL SUBQUERY: Exercise-41 with Solution

From the following table, write a SQL query to find those employees who work in the department 'Marketing'. Return first name, last name and department ID.

Sample table: employees

Sample table: departments

Sample Solution:

``````SELECT first_name, last_name, department_id
FROM employees
WHERE department_id =
(SELECT department_id
FROM departments
WHERE department_name = 'Marketing');
``````

Sample Output:

```first_name	last_name	department_id
Michael		Hartstein	20
Pat		Fay		20
```

Pictorial Presentation:

## Query Visualization:

Duration:

Rows:

Cost:

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## SQL: Tips of the Day

How to count occurrences of a column value in SQL?

Input table:

```id | age
--------
0  | 25
1  | 25
2  | 23
```
```SELECT age, count(age)
FROM Students
GROUP by age
```

Output:

```id | age | count
----------------
0  | 25  | 2
1  | 25  | 2
2  | 23  | 1
```

Ref: https://bit.ly/3zbLPQm