New Feature: Playlist Center! Pick a topic and let our playlists guide the way.

Start learning with our library of video tutorials taught by experts. Get started

Access 2010: Queries in Depth
Illustration by Neil Webb

Introducing the conditional IIf function


From:

Access 2010: Queries in Depth

with Adam Wilbert

Video: Introducing the conditional IIf function

In this chapter, we're going to take a look at creating a new function called a conditional statement. Conditional statements are one of my favorite features of Access queries. They allow you to create an automated decision-making process. They're very flexible and very powerful and they can automate some complex tasks in a short amount of time. So let's dig in to see what this is all about. A conditional statement is an if-then statement. In Access, we will use the IIf function and yes, there are two I's there. That's not a typo. The first I stands for immediate, meaning that this is a function that runs inside of an SQL statement.
Expand all | Collapse all
  1. 9m 9s
    1. Welcome
      1m 10s
    2. Using the exercise files
      41s
    3. Introducing the database
      4m 29s
    4. Previewing the course
      2m 49s
  2. 17m 17s
    1. Understanding queries
      3m 31s
    2. Following naming conventions and best practices
      2m 56s
    3. Using the Query Wizard
      5m 21s
    4. Exploring the design interface
      5m 29s
  3. 26m 39s
    1. Defining criteria
      5m 40s
    2. Understanding comparison operators
      3m 19s
    3. Defining the column headers
      2m 49s
    4. Exploring the property sheet
      7m 32s
    5. Printing query results
      2m 41s
    6. Working with joins
      4m 38s
  4. 14m 14s
    1. Understanding parameter queries
      4m 27s
    2. Obtaining parameters from forms
      5m 17s
    3. Creating a combo box
      4m 30s
  5. 23m 24s
    1. Understanding the Totals field
      5m 31s
    2. Creating aggregate calculations
      3m 31s
    3. Exploring the Expression Builder interface
      4m 28s
    4. Using mathematical operators
      5m 46s
    5. Applying text functions
      4m 8s
  6. 24m 23s
    1. Understanding dates as serial numbers
      2m 42s
    2. Specifying a range of dates or times
      3m 47s
    3. Formatting dates
      4m 31s
    4. Using other Date/Time functions
      3m 47s
    5. Defining today's date
      2m 41s
    6. Calculating time intervals
      6m 55s
  7. 20m 9s
    1. Introducing the conditional IIf function
      2m 57s
    2. Creating an IIf function
      7m 31s
    3. Nesting IIf functions
      4m 57s
    4. Using the Switch function
      4m 44s
  8. 20m 41s
    1. Understanding the reporting tool
      2m 13s
    2. Building the form
      6m 57s
    3. Building the query
      5m 4s
    4. Building the report
      3m 30s
    5. Finalizing the reporting tool
      2m 57s
  9. 25m 37s
    1. Finding duplicate records
      2m 17s
    2. Identifying unmatched records
      2m 29s
    3. Creating crosstab results
      2m 57s
    4. Creating backups
      1m 29s
    5. Creating update queries
      3m 22s
    6. Making, deleting, and appending records
      5m 36s
    7. Uniting tables
      3m 16s
    8. Embedding SQL code in queries
      4m 11s
  10. 1m 0s
    1. Next Steps
      1m 0s

Watch this entire course now—plus get access to every course in the library. Each course includes high-quality videos taught by expert instructors.

Become a member
please wait ...
Access 2010: Queries in Depth
3h 2m Intermediate Jun 16, 2011

Viewers: in countries Watching now:

In this course, author Adam Wilbert illustrates how to create and leverage real-world queries and turn raw data into usable information. The course covers setting up queries, performing calculations, using the built-in Access functions to further refine query results, and identifying top performers or areas for improvement based on a range of criteria.

Topics include:
  • Naming conventions and best practices
  • Working with joins
  • Using comparison operators
  • Defining criteria for select queries
  • Creating parameter queries
  • Creating calculated fields
  • Working with dates and times
  • Using the Expression Builder
  • Creating conditional statements
  • Making, deleting and appending records
  • Building reports
Subjects:
Business Databases
Software:
Access Office
Author:
Adam Wilbert

Introducing the conditional IIf function

In this chapter, we're going to take a look at creating a new function called a conditional statement. Conditional statements are one of my favorite features of Access queries. They allow you to create an automated decision-making process. They're very flexible and very powerful and they can automate some complex tasks in a short amount of time. So let's dig in to see what this is all about. A conditional statement is an if-then statement. In Access, we will use the IIf function and yes, there are two I's there. That's not a typo. The first I stands for immediate, meaning that this is a function that runs inside of an SQL statement.

This is so Access can distinguish between this function and the Visual Basic If routine. The IIf function has a specific syntax that must be followed. There are three required arguments. The expression to evaluate, the piece to return if true, and a piece to return if false. The first part of our condition is the expression. Any mathematical expression that evaluates to true or false will work. The true part argument is returned if the expression is true and the false part argument is returned if the expression is false. Many of the mathematical operations that we've seen in this course can be used to construct your expressions.

We can use the operators Less Than, Greater Than, Equal. And, Or, and Not will also work. We can use any of these to build the expression that Access will evaluate. An IIf function that evaluates August sales compared to a plan or goal might look something like this. It reads is the August sales over $100,000? If it's true, they will say that the store met their sales plan and if that's false, we will say the store did not meet their sales plan. So let's see how Access would apply this in our data tables. If we take a column of data called August Sales and we plug that into our Expression, Access will evaluate the result.

So if we take Store 101 and look at their August sales, 103,588. If we plug that into our IIf statement, we'll get an expression that reads 103,588 is greater than 100,000. Well, that's true. So the result is, met sales plan. The same thing applies to Store 102. Their August sales is over 100,000, so they also met their sales plan. Now Store 103, their sales were 98,743.

If we plug that into our IIf statement, we get 98,743 is greater than 100,000. Well, that's a false statement. So Access will return below sales plan and so on down the list. So you can see that if you had to manually evaluate August sales and take each store's value and compare it to goal and then define a result, that could take you quite a long time. By using an IIf conditional function, Access can automate that process for you. We will start in the next video by building our own IIf function using the Expression Builder.

There are currently no FAQs about Access 2010: Queries in Depth.

 
Share a link to this course

What are exercise files?

Exercise files are the same files the author uses in the course. Save time by downloading the author's files instead of setting up your own files, and learn by following along with the instructor.

Can I take this course without the exercise files?

Yes! If you decide you would like the exercise files later, you can upgrade to a premium account any time.

Become a member Download sample files See plans and pricing

Please wait... please wait ...
Upgrade to get access to exercise files.

Exercise files video

How to use exercise files.

Learn by watching, listening, and doing, Exercise files are the same files the author uses in the course, so you can download them and follow along Premium memberships include access to all exercise files in the library.
Upgrade now


Exercise files

Exercise files video

How to use exercise files.

For additional information on downloading and using exercise files, watch our instructional video or read the instructions in the FAQ.

This course includes free exercise files, so you can practice while you watch the course. To access all the exercise files in our library, become a Premium Member.

join now Upgrade now

Are you sure you want to mark all the videos in this course as unwatched?

This will not affect your course history, your reports, or your certificates of completion for this course.


Mark all as unwatched Cancel

Congratulations

You have completed Access 2010: Queries in Depth.

Return to your organization's learning portal to continue training, or close this page.


OK
Become a member to add this course to a playlist

Join today and get unlimited access to the entire library of video courses—and create as many playlists as you like.

Get started

Already a member?

Become a member to like this course.

Join today and get unlimited access to the entire library of video courses.

Get started

Already a member?

Exercise files

Learn by watching, listening, and doing! Exercise files are the same files the author uses in the course, so you can download them and follow along. Exercise files are available with all Premium memberships. Learn more

Get started

Already a Premium member?

Exercise files video

How to use exercise files.

Ask a question

Thanks for contacting us.
You’ll hear from our Customer Service team within 24 hours.

Please enter the text shown below:

The classic layout automatically defaults to the latest Flash Player.

To choose a different player, hold the cursor over your name at the top right of any lynda.com page and choose Site preferencesfrom the dropdown menu.

Continue to classic layout Stay on new layout
Exercise files

Access exercise files from a button right under the course name.

Mark videos as unwatched

Remove icons showing you already watched videos if you want to start over.

Control your viewing experience

Make the video wide, narrow, full-screen, or pop the player out of the page into its own window.

Interactive transcripts

Click on text in the transcript to jump to that spot in the video. As the video plays, the relevant spot in the transcript will be highlighted.

Are you sure you want to delete this note?

No

Thanks for signing up.

We’ll send you a confirmation email shortly.


Sign up and receive emails about lynda.com and our online training library:

Here’s our privacy policy with more details about how we handle your information.

Keep up with news, tips, and latest courses with emails from lynda.com.

Sign up and receive emails about lynda.com and our online training library:

Here’s our privacy policy with more details about how we handle your information.

   
submit Lightbox submit clicked
Terms and conditions of use

We've updated our terms and conditions (now called terms of service).Go
Review and accept our updated terms of service.