Home > Articles > Data > SQL Server

  • Print
  • + Share This
Like this article? We recommend

Creating a Calculated Cell in an MDX Query

Another means of creating a calculated cell is via an MDX query. As in the process of creating a calculated member within an MDX query, the WITH clause comes into play. We can also use the WITH clause to define cell properties. Calculated cells can be created via MDX using the CREATE CELL CALCULATION statement as well, but we will focus on the WITH clause approach. This is a typical approach for creating a calculated cell with session scope, in contrast with the global scope one would expect to provide with a calculated cell created by using the Calculated Cells Wizard or by using the CREATE CELL CALCULATION statement.

We begin our creation of a calculated cell by firing up the MDX sample application once again because it provides an excellent platform from which to learn about MDX.

  1. Go to the Start button on the PC; navigate to Microsoft SQL Server, Analysis Services; then to the MDX sample application.

    The Connect dialog box appears, as shown in Figure 15.

    Figure 15Figure 15 The Connect dialog box for the MDX sample application.

Figure 15 depicts the name of my server, MOTHER, and properly indicates that we will be connecting via the MSOLAP provider (the default).

  1. Click OK. (We might also choose to cancel the dialog box and connect later by clicking Connect on the File menu.)

    The MDX Sample Application window appears.

  2. Clear the top area (the Query pane) of any remnants of queries that might appear.

  3. Ensure that FoodMart 2000 is selected as the database name in the DB box of the toolbar.

  4. Select the Warehouse cube in the Cube drop-down list box.

The MDX Sample Application window should resemble that shown in Figure 16, complete with the information from the Warehouse cube displaying in the Metadata tree (left section of the Metadata pane).

Figure 16Figure 16 The MDX sample application window.

We will create an MDX query that defines and creates a calculated cell, and that also returns cell properties as a part of the query result.

  1. Type the following core query into the query pane of the sample application:

    -- Step 2-1, Calculated Cells
    SELECT {[Measures].[Warehouse Cost]} ON COLUMNS, 9
      [Warehouse].[Warehouse Name].Members ON ROWS 9
    FROM Warehouse
  2. Execute the query using the Run Query button.

    The results set appears as shown in Figure 17.

    Figure 17Figure 17 Results set, core query.


  3. Save the query as Step2-1, leaving it open for the next step.

Now we add the WITH clause with the definition of the calculated cell, which we will call "Warehouse Cost Scope" for this exercise.

  1. Remove the comment from the top line of the query (-- Step 2-1, Calculated Cells).

  2. Add the following syntax into the query pane before the SELECT clause:

    -- Step 2-2, Calculated Cells
    WITH CELL CALCULATION [Warehouse Cost Scope] 
     FOR '([Warehouse].[Warehouse Name].MEMBERS)'
    AS 'CalculationPassValue (Warehouse.CurrentMember, 0)',
    CONDITION = 'CalculationPassValue ((Warehouse.CurrentMember, 9 
       [Warehouse Cost]), 0) > 11000'

    The full query should now appear in the query pane, as shown in Figure 18.

    Figure 18Figure 18 Creating the calculated cell via the WITH clause.

The WITH clause contains several of the required elements that are "filled in" by the Calculated Cells Wizard. Let's look at each in turn to reinforce our understanding.

The first part of the WITH clause function functions just like it did for the creation of a calculated member:

WITH CELL CALCULATION [Warehouse Cost Scope], 

It defines the calculated cell (CELL CALCULATION is the syntax), giving it a name (Warehouse Cost Scope). The next line of the WITH clause equates to Step 1 of the Calculated Cell Wizard, and is the point of definition of the first of the three required elements for a calculated cell, the subcube (or cube section/region):

FOR '([Warehouse].[Warehouse Name].MEMBERS)', 

We are defining our subcube as the Warehouse Names members of the Warehouse dimension. (Note that we kept it simple for the exercise: We can have multiple dimensions specified here, together with additional more-sophisticated syntax for other purposes.)

The next line of the clause represents the calculation formula, the second of the three main requirements:

AS 'CalculationPassValue (Warehouse.CurrentMember, 0)', 

The calculation formula is responsible for the ultimate value of the cell once it is evaluated by Analysis Services (and provided that any given cell concerned 1) lies within the subcube definition, and 2) passes the conditional test—if any—imposed by the third main part of the calculated cell definition: the condition statement itself. We are not seeking to change the values themselves, merely to highlight them; therefore, we are basically making the cells targeted "equal to themselves." (See the comments in the earlier section for the corresponding step in the Calculated Cells Wizard for the reasoning behind the use of the CalculationPassValue function.)

The last line of the clause fills the third (optional) requirement in defining the calculated cell, and supplies the calculated cell condition that is imposed upon the subcube cell selection to determine whether the value in the calculation formula is assigned to the respective cells:

CONDITION = 'CalculationPassValue ((Warehouse.CurrentMember, 9
   [Warehouse Cost]), 0) > 11000', 

(The comments in the earlier section surrounding the use of the CalculationPassValue function apply here, as well.)

  1. Execute the query using the Run Query button.

    The results set appears, as shown in Figure 19.

    Figure 19Figure 19 Results set, MDX query Step 2.


It's difficult to tell if any benefit is obtained through our newly created calculated cell: No tangible evidence of its presence appears. We see no highlighting at this stage of creation because we have yet to define the setpoints for the cell properties we wish to put in place to make the highlights appear. We will accomplish this in the following steps.

  1. Save the query as Step2-2, leaving it open for the next step.

  2. Immediately following the CONDITION = 'CalculationPassValue ((Warehouse.CurrentMember, [Warehouse Cost]), 0) > 11000', (ensure that there is a comma after > 11000') line of the WITH clause, insert the following:

    FORE_COLOR = '16711935', BACK_COLOR = '0', 9
       FORMAT_STRING = '$#,##0.00;($#,##0.00', FONT_FLAGS = '3'

This puts into place the cell property setpoints, namely the ForeColor of magenta and the BackColor of black, together with the same Format String that we used previously. For details about these setpoints, please see the discussion surrounding properties in the earlier section.

All that remains is to "enable" the property setpoints by adding a final line to the query. We employ the CELL PROPERTIES keyword, along with one or more intrinsic cell properties: In our case, these are ForeColor and BackColor.

  1. Immediately following the FROM Warehouse line of the SELECT clause, insert the following:

    CELL PROPERTIES VALUE, FORMATTED_VALUE, 9
       FORE_COLOR, BACK_COLOR, FONT_FLAGS

The combination of the CELL PROPERTIES keyword and the properties that follow it, as shown above, is not required. We just need to keep in mind that, by default, if the CELL PROPERTIES keyword is not used, the cell properties returned are VALUE, FORMATTED_VALUE, and CELL_ORDINAL. Also, if the CELL PROPERTIES keyword is used, only those cell properties explicitly stated with the keyword line are returned. So it's basically a case of "if you specify, specify completely."

The full query should now appear in the query pane as shown in Figure 20.

Figure 20Figure 20 Adding the cell properties information to finish.

  1. Execute the query via the Run Query button.

    The results set appears, as shown in Figure 21.

    Figure 21Figure 21 Results Set, MDX Query Step 2


We see the effects of the calculated cell that we have created in action with the appearance of the exception highlighting we defined in the MDX query for individual Warehouses with Warehouse Costs over $11,000.

  1. Save the query as Step2-3, closing the sample application when finished.

In addition to providing exception highlighting, as seen in the two exercises above, calculated cells can provide other functionality. Examples include the following:

  • Customization of query results

  • Restriction of calculated cells–based formulas to precise data subsets (through subcube definition)

  • Efficient and simple subset manipulation

  • Flexibility and portability options

  • Provision of a cube structure layer outside (and independent of) cube physical structure

  • Capacity for multipass evaluation (such as in a "simultaneous equation" scenario in which costs are allocated in more than one step)

An added benefit of using the powerful calculated cells functionality relies upon the fact that they can be configured on the server via Analysis Manager. This can mean the deployment of enhancements to distributed applications and user interfaces with immediate benefit, in many cases, without the immediate necessity of reprogramming the interfaces/applications to take advantage of the new features.

  • + Share This
  • 🔖 Save To Your Account

InformIT Promotional Mailings & Special Offers

I would like to receive exclusive offers and hear about products from InformIT and its family of brands. I can unsubscribe at any time.

Overview


Pearson Education, Inc., 221 River Street, Hoboken, New Jersey 07030, (Pearson) presents this site to provide information about products and services that can be purchased through this site.

This privacy notice provides an overview of our commitment to privacy and describes how we collect, protect, use and share personal information collected through this site. Please note that other Pearson websites and online products and services have their own separate privacy policies.

Collection and Use of Information


To conduct business and deliver products and services, Pearson collects and uses personal information in several ways in connection with this site, including:

Questions and Inquiries

For inquiries and questions, we collect the inquiry or question, together with name, contact details (email address, phone number and mailing address) and any other additional information voluntarily submitted to us through a Contact Us form or an email. We use this information to address the inquiry and respond to the question.

Online Store

For orders and purchases placed through our online store on this site, we collect order details, name, institution name and address (if applicable), email address, phone number, shipping and billing addresses, credit/debit card information, shipping options and any instructions. We use this information to complete transactions, fulfill orders, communicate with individuals placing orders or visiting the online store, and for related purposes.

Surveys

Pearson may offer opportunities to provide feedback or participate in surveys, including surveys evaluating Pearson products, services or sites. Participation is voluntary. Pearson collects information requested in the survey questions and uses the information to evaluate, support, maintain and improve products, services or sites, develop new products and services, conduct educational research and for other purposes specified in the survey.

Contests and Drawings

Occasionally, we may sponsor a contest or drawing. Participation is optional. Pearson collects name, contact information and other information specified on the entry form for the contest or drawing to conduct the contest or drawing. Pearson may collect additional personal information from the winners of a contest or drawing in order to award the prize and for tax reporting purposes, as required by law.

Newsletters

If you have elected to receive email newsletters or promotional mailings and special offers but want to unsubscribe, simply email information@informit.com.

Service Announcements

On rare occasions it is necessary to send out a strictly service related announcement. For instance, if our service is temporarily suspended for maintenance we might send users an email. Generally, users may not opt-out of these communications, though they can deactivate their account information. However, these communications are not promotional in nature.

Customer Service

We communicate with users on a regular basis to provide requested services and in regard to issues relating to their account we reply via email or phone in accordance with the users' wishes when a user submits their information through our Contact Us form.

Other Collection and Use of Information


Application and System Logs

Pearson automatically collects log data to help ensure the delivery, availability and security of this site. Log data may include technical information about how a user or visitor connected to this site, such as browser type, type of computer/device, operating system, internet service provider and IP address. We use this information for support purposes and to monitor the health of the site, identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents and appropriately scale computing resources.

Web Analytics

Pearson may use third party web trend analytical services, including Google Analytics, to collect visitor information, such as IP addresses, browser types, referring pages, pages visited and time spent on a particular site. While these analytical services collect and report information on an anonymous basis, they may use cookies to gather web trend information. The information gathered may enable Pearson (but not the third party web trend services) to link information with application and system log data. Pearson uses this information for system administration and to identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents, appropriately scale computing resources and otherwise support and deliver this site and its services.

Cookies and Related Technologies

This site uses cookies and similar technologies to personalize content, measure traffic patterns, control security, track use and access of information on this site, and provide interest-based messages and advertising. Users can manage and block the use of cookies through their browser. Disabling or blocking certain cookies may limit the functionality of this site.

Do Not Track

This site currently does not respond to Do Not Track signals.

Security


Pearson uses appropriate physical, administrative and technical security measures to protect personal information from unauthorized access, use and disclosure.

Children


This site is not directed to children under the age of 13.

Marketing


Pearson may send or direct marketing communications to users, provided that

  • Pearson will not use personal information collected or processed as a K-12 school service provider for the purpose of directed or targeted advertising.
  • Such marketing is consistent with applicable law and Pearson's legal obligations.
  • Pearson will not knowingly direct or send marketing communications to an individual who has expressed a preference not to receive marketing.
  • Where required by applicable law, express or implied consent to marketing exists and has not been withdrawn.

Pearson may provide personal information to a third party service provider on a restricted basis to provide marketing solely on behalf of Pearson or an affiliate or customer for whom Pearson is a service provider. Marketing preferences may be changed at any time.

Correcting/Updating Personal Information


If a user's personally identifiable information changes (such as your postal address or email address), we provide a way to correct or update that user's personal data provided to us. This can be done on the Account page. If a user no longer desires our service and desires to delete his or her account, please contact us at customer-service@informit.com and we will process the deletion of a user's account.

Choice/Opt-out


Users can always make an informed choice as to whether they should proceed with certain services offered by InformIT. If you choose to remove yourself from our mailing list(s) simply visit the following page and uncheck any communication you no longer want to receive: www.informit.com/u.aspx.

Sale of Personal Information


Pearson does not rent or sell personal information in exchange for any payment of money.

While Pearson does not sell personal information, as defined in Nevada law, Nevada residents may email a request for no sale of their personal information to NevadaDesignatedRequest@pearson.com.

Supplemental Privacy Statement for California Residents


California residents should read our Supplemental privacy statement for California residents in conjunction with this Privacy Notice. The Supplemental privacy statement for California residents explains Pearson's commitment to comply with California law and applies to personal information of California residents collected in connection with this site and the Services.

Sharing and Disclosure


Pearson may disclose personal information, as follows:

  • As required by law.
  • With the consent of the individual (or their parent, if the individual is a minor)
  • In response to a subpoena, court order or legal process, to the extent permitted or required by law
  • To protect the security and safety of individuals, data, assets and systems, consistent with applicable law
  • In connection the sale, joint venture or other transfer of some or all of its company or assets, subject to the provisions of this Privacy Notice
  • To investigate or address actual or suspected fraud or other illegal activities
  • To exercise its legal rights, including enforcement of the Terms of Use for this site or another contract
  • To affiliated Pearson companies and other companies and organizations who perform work for Pearson and are obligated to protect the privacy of personal information consistent with this Privacy Notice
  • To a school, organization, company or government agency, where Pearson collects or processes the personal information in a school setting or on behalf of such organization, company or government agency.

Links


This web site contains links to other sites. Please be aware that we are not responsible for the privacy practices of such other sites. We encourage our users to be aware when they leave our site and to read the privacy statements of each and every web site that collects Personal Information. This privacy statement applies solely to information collected by this web site.

Requests and Contact


Please contact us about this Privacy Notice or if you have any requests or questions relating to the privacy of your personal information.

Changes to this Privacy Notice


We may revise this Privacy Notice through an updated posting. We will identify the effective date of the revision in the posting. Often, updates are made to provide greater clarity or to comply with changes in regulatory requirements. If the updates involve material changes to the collection, protection, use or disclosure of Personal Information, Pearson will provide notice of the change through a conspicuous notice on this site or other appropriate way. Continued use of the site after the effective date of a posted revision evidences acceptance. Please contact us if you have questions or concerns about the Privacy Notice or any objection to any revisions.

Last Update: November 17, 2020