To answer this question, you would need to write a SQL query that joins the two tables on their common column (presumably department_id or similar), and then counts the distinct number of managers in each department. Here's how you could do it:

```sql
SELECT d.dept_name, COUNT(DISTINCT dm.manager_id) as num_managers
FROM dept_manager dm
JOIN departments d ON dm.dept_id = d.dept_id
GROUP BY d.dept_name;
```

This query works as follows:

1. `SELECT d.dept_name, COUNT(DISTINCT dm.manager_id) as num_managers`: This line is selecting the department name from the departments table, and the count of distinct manager IDs from the dept_manager table. The `DISTINCT` keyword ensures that if a manager appears more than once in a department, they are only counted once.

2. `FROM dept_manager dm JOIN departments d ON dm.dept_id = d.dept_id`: This line is joining the dept_manager table (aliased as dm) with the departments table (aliased as d) on the dept_id column, which is presumably a common column in both tables.

3. `GROUP BY d.dept_name`: This line is grouping the results by department name, so that the count of managers is calculated for each department separately.

Please note that the exact column names and table names might vary based on your database schema. You would need to replace `dept_id`, `dept_name`, `manager_id`, `dept_manager`, and `departments` with the actual names in your database.

Question

To answer this question, you would need to write a SQL query that joins the two tables on their common column (presumably department_id or similar), and then counts the distinct number of managers in each department. Here's how you could do it:

```sql
SELECT d.dept_name, COUNT(DISTINCT dm.manager_id) as num_managers
FROM dept_manager dm
JOIN departments d ON dm.dept_id = d.dept_id
GROUP BY d.dept_name;
```

This query works as follows:

1. `SELECT d.dept_name, COUNT(DISTINCT dm.manager_id) as num_managers`: This line is selecting the department name from the departments table, and the count of distinct manager IDs from the dept_manager table. The `DISTINCT` keyword ensures that if a manager appears more than once in a department, they are only counted once.

2. `FROM dept_manager dm JOIN departments d ON dm.dept_id = d.dept_id`: This line is joining the dept_manager table (aliased as dm) with the departments table (aliased as d) on the dept_id column, which is presumably a common column in both tables.

3. `GROUP BY d.dept_name`: This line is grouping the results by department name, so that the count of managers is calculated for each department separately.

Please note that the exact column names and table names might vary based on your database schema. You would need to replace `dept_id`, `dept_name`, `manager_id`, `dept_manager`, and `departments` with the actual names in your database.

Knowee AI · Accepted Answer

To answer this question, you would need to write a SQL query that joins the two tables on their common column (presumably department_id or similar), and then counts the distinct number of managers in each department. Here's how you could do it:

```sql
SELECT d.dept_name, COUNT(DISTINCT dm.manager_id) as num_managers
FROM dept_manager dm
JOIN departments d ON dm.dept_id = d.dept_id
GROUP BY d.dept_name;
```

This query works as follows:

1. `SELECT d.dept_name, COUNT(DISTINCT dm.manager_id) as num_managers`: This line is selecting the department name from the departments table, and the count of distinct manager IDs from the dept_manager table. The `DISTINCT` keyword ensures that if a manager appears more than once in a department, they are only counted once.

2. `FROM dept_manager dm JOIN departments d ON dm.dept_id = d.dept_id`: This line is joining the dept_manager table (aliased as dm) with the departments table (aliased as d) on the dept_id column, which is presumably a common column in both tables.

3. `GROUP BY d.dept_name`: This line is grouping the results by department name, so that the count of managers is calculated for each department separately.

Please note that the exact column names and table names might vary based on your database schema. You would need to replace `dept_id`, `dept_name`, `manager_id`, `dept_manager`, and `departments` with the actual names in your database.

Question 7Consider two tables: dept_manager and departmentsWrite a query that returns how many managers belong to different departments. (Select all that apply)

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