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SQL Exercises: Find the names of departments where more than two employees are working

SQL JOINS: Exercise-29 with Solution

From the following tables write a SQL query to find the names of departments where more than two employees are employed. Return dpt_name.

Sample table:emp_department


Sample table: emp_details


Sample Solution:

SELECT emp_department.dpt_name
  FROM emp_details 
     INNER JOIN emp_department
       ON emp_dept =dpt_code
        GROUP BY emp_department.dpt_name
          HAVING COUNT(*) > 2;

Output of the Query:

dpt_name
Finance
IT
HR

Relational Algebra Expression:

Relational Algebra Expression: Find the names of departments where more than two employees are working.

Relational Algebra Tree:

Relational Algebra Tree: Find the names of departments where more than two employees are working.

Practice Online


Query Visualization:

Duration:

Query visualization of Find the names of departments where more than two employees are working - Duration

Rows:

Query visualization of Find the names of departments where more than two employees are working - Rows

Cost:

Query visualization of Find the names of departments where more than two employees are working - Cost

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Previous: From the following tables write a SQL query to find the departments with a budget more than Rs. 50000 and display the first name and last name of employees.
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SQL: Tips of the Day

SQL Server SELECT into existing table. 

INSERT INTO dbo.TABLETWO
SELECT col1, col2
  FROM dbo.TABLEONE
 WHERE col3 LIKE @search_key

This assumes there's only two columns in dbo.TABLETWO - you need to specify the columns otherwise:

INSERT INTO dbo.TABLETWO
  (col1, col2)
SELECT col1, col2
  FROM dbo.TABLEONE
 WHERE col3 LIKE @search_key

Database: SQL Server

Ref: https://bit.ly/3y6tpA3