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SQL: Display all employee data for the department 57

SQL Basic Select Statement: Exercise-33 with Solution.

From the following table, write a SQL query to retrieve the details of the employees who work in the department 57. Return emp_idno, emp_fname, emp_lname and emp_dept.

Sample table: emp_details

 

Sample Solution:

SELECT * 
 FROM emp_details 
  WHERE emp_dept= 57;

Output of the Query:

emp_idno	emp_fname	emp_lname	emp_dept
839139		Maria		Foster		57
127323		Michale		Robbin		57
843795		Enric		Dosio		57
847674		Kuleswar	Sitaraman	57
555935		Alex		Manuel		57

Relational Algebra Expression:

Relational Algebra Expression: Display all the data of employees that work in the department 57.

Relational Algebra Tree:

Relational Algebra Tree: Display all the data of employees that work in the department 57.

Practice Online


Query Visualization:

Duration:

Query visualization of Display all the data of employees that work in the department 57 - Duration

Rows:

Query visualization of Display all the data of employees that work in the department 57 - Rows

Cost:

Query visualization of Display all the data of employees that work in the department 57 - Cost

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SQL: Tips of the Day

Nested select statement in SQL Server.

You need to alias the subquery.

SELECT name FROM (SELECT name FROM agentinformation) a 

or to be more explicit

SELECT a.name FROM (SELECT name FROM agentinformation) a  

Database: SQL Server

Ref: https://bit.ly/3Qruiu5