From the given table "emp_det" which has column values "emp_id", "fist_name", "last_name", "email","person_id", "dept_id", "salary". Write a SQL query to retrieve the employee ID, first name, and last name of employees whose first names contain the letter 'S' and who work in departments where at least one employee's first name contains the letter 'S'.Table Name: emp_detInput format :The input records are already prepopulated as per the given requirement.Output format :The result of the query is a list of employee details, including their employee ID, first name, and last name as shown below.emp_id first_name last_name123 S Arvind124 Sj Kumar234 Sk Seema256 Sd venkatRefer to the sample output for the column headers.
Question
From the given table "emp_det" which has column values "emp_id", "fist_name", "last_name", "email","person_id", "dept_id", "salary". Write a SQL query to retrieve the employee ID, first name, and last name of employees whose first names contain the letter 'S' and who work in departments where at least one employee's first name contains the letter 'S'.Table Name: emp_detInput format :The input records are already prepopulated as per the given requirement.Output format :The result of the query is a list of employee details, including their employee ID, first name, and last name as shown below.emp_id first_name last_name123 S Arvind124 Sj Kumar234 Sk Seema256 Sd venkatRefer to the sample output for the column headers.
Solution
To retrieve the required data from the "emp_det" table, you can use a SQL query. Here is a step-by-step guide on how to write the query:
Step 1: Start with the SELECT statement. You want to retrieve the employee ID, first name, and last name, so include these column names in your SELECT statement:
SELECT emp_id, first_name, last_name
Step 2: Specify the table you are selecting from, which is "emp_det":
FROM emp_det
Step 3: Now, you need to add a WHERE clause to filter the employees whose first names contain the letter 'S'. You can use the LIKE keyword in SQL to search for a specified pattern in a column:
WHERE first_name LIKE '%S%'
Step 4: You also need to filter the employees who work in departments where at least one employee's first name contains the letter 'S'. For this, you can use a subquery in the WHERE clause:
AND dept_id IN (SELECT dept_id FROM emp_det WHERE first_name LIKE '%S%')
So, the complete SQL query will look like this:
SELECT emp_id, first_name, last_name
FROM emp_det
WHERE first_name LIKE '%S%'
AND dept_id IN (SELECT dept_id FROM emp_det WHERE first_name LIKE '%S%')
This query will return the employee ID, first name, and last name of employees whose first names contain the letter 'S' and who work in departments where at least one employee's first name contains the letter 'S'.
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