Solved

Tuple and domain calculus

Posted on 2011-03-06
2
391 Views
Last Modified: 2012-05-11
In these calculus's (databse calculus), how do you deal with if statements?
0
Comment
Question by:JCW2
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 15

Accepted Solution

by:
derekkromm earned 500 total points
ID: 35050912
can you give an example?

typically, when you're writing a query and you need to have an "if" on a specific column, there's a function that allows you to do that

in access, you can do iif(<if statement>, <true value>, <false value>)
in sql server, you can do case when <if statement=true> then <do stuff> else <do other stuff> end

etc
0
 

Author Closing Comment

by:JCW2
ID: 35059489
Thank you for your help.
0

Featured Post

On Demand Webinar: Networking for the Cloud Era

Did you know SD-WANs can improve network connectivity? Check out this webinar to learn how an SD-WAN simplified, one-click tool can help you migrate and manage data in the cloud.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Recently, Microsoft released a best-practice guide for securing Active Directory. It's a whopping 300+ pages long. Those of us tasked with securing our company’s databases and systems would, ideally, have time to devote to learning the ins and outs…
This post contains step-by-step instructions for setting up alerting in Percona Monitoring and Management (PMM) using Grafana.
This is a video describing the growing solar energy use in Utah. This is a topic that greatly interests me and so I decided to produce a video about it.
Finds all prime numbers in a range requested and places them in a public primes() array. I've demostrated a template size of 30 (2 * 3 * 5) but larger templates can be built such 210  (2 * 3 * 5 * 7) or 2310  (2 * 3 * 5 * 7 * 11). The larger templa…

726 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question