Logical operators-logical operators, Database Management System

Assignment Help:

Logical Operators

Rules of Precedence:

Order evaluated

Operator

1

All comparison operators

2

NOT

3

AND

4

OR

Example: To produce those records of salesman or president who are having salary above 15000/-

Select ename, job, sal from emp

Where job = 'SALESMAN' or job = 'PRESIDENT'

And sal>15000;

The query formulation as above is wrong for the problem statement. The correct formulation would be:

SELECT ENAME, JOB, SAL FROM EMP

WHERE (JOB = 'SALESMAN' OR JOB = 'PRESIDENT') AND SAL>15000;


Related Discussions:- Logical operators-logical operators

Managing databases, 10A.53 Code an Oracle Database trigger to enforce the...

10A.53 Code an Oracle Database trigger to enforce the constraint that an employee can never change his or her department. 10A.54 Code an Oracle Database trigger to allow the

What are the benefits of document scanning, What are the benefits of docume...

What are the benefits of document scanning? Document scanning, in addition to being cost-efficient, also enhances productivity. This service enhances security as you set the pa

Write query to select student from math department, Consider the table stud...

Consider the table student and list names of students in the departments other than maths and computer. SELECT std_name FRM student WHERE dept_name NOT IN (‘Maths','Computer);

Explain the function of object model, Explain the function of Object model ...

Explain the function of Object model Object model describes the classes of objects in system, including their attributes and operations which they support. The analysis object

BOGUS VS GENUINE EMPOWERMENT, what is bogus empowerment. And what is genuin...

what is bogus empowerment. And what is genuine empowerment

Management information system, Explain the challenges before an E-business ...

Explain the challenges before an E-business management.

MS Access 2010 - Form Updates Table, Hi there, Have an issue with my Databa...

Hi there, Have an issue with my Database. I have: TblOrderDetails and FmOrderDetails TblCircuit and FmCircuit Whenever I add data into the Form, it will update the table as expect

What is deadlock, What is deadlock? How can it be avoided? How can it be re...

What is deadlock? How can it be avoided? How can it be resolved once it occurs? Deadlock happens when two transactions are each waiting on a resource that the other transaction

Explain interfaces for parametric users, Explain Interfaces for parametric ...

Explain Interfaces for parametric Users? Interfaces for Parametric Users - Parametric users, such as bank tellers, frequent have a little set of operations in which they must p

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd