Communities
A collaborative platform to connect and grow with like-minded Informaticans across the globe
Product Communities
Connect and collaborate with Informatica experts and champions
Discussions
Have a question? Start a Discussion and get immediate answers you are looking for
User Groups
Customer-organized groups that meet online and in-person. Join today to network, share ideas, and get tips on how to get the most out of Informatica
Get Started
Community Guidelines
Knowledge Center
Troubleshooting documents, product guides, how to videos, best practices, and more
Knowledge Base
One-stop self-service portal for solutions, FAQs, Whitepapers, How Tos, Videos, and more
Support TV
Video channel for step-by-step instructions to use our products, best practices, troubleshooting tips, and much more
Documentation
Information library of the latest product documents
Velocity (Best Practices)
Best practices and use cases from the Implementation team
Learn
Rich resources to help you leverage full capabilities of our products
Trainings
Role-based training programs for the best ROI
Certifications
Get certified on Informatica products. Free, Foundation, or Professional
Product Learning Paths
Free and unlimited modules based on your expertise level and journey
Resources
Library of content to help you leverage the best of Informatica products
Tech Tuesdays Webinars
Most popular webinars on product architecture, best practices, and more
Product Availability Matrix
Product Availability Matrix statements of Informatica products
SupportFlash
Monthly support newsletter
Support Documents
Informatica Support Guide and Statements, Quick Start Guides, and Cloud Product Description Schedule
Product Lifecycle
End of Life statements of Informatica products
Ideas
Events
Change Request Tracking
Marketplace
English
  • PowerCenter 10.4.0
  • All Products

Table of Contents

Search

  1. Preface
  2. Introduction to Data Validation Option
  3. Repositories
  4. XML Data Source
  5. Tests for XML Data Sources
  6. Connections
  7. Expressions
  8. Table Pairs
  9. Tests for Table Pairs
  10. Single-Table Constraints
  11. Tests for Single-Table Constraints
  12. Examples of Tests from Spreadsheets
  13. SQL Views
  14. Lookup Views
  15. Join Views
  16. Aggregate Views
  17. Business Intelligence and Reporting Tools Reports
  18. Dashboards
  19. DVOCmd Command Line Program
  20. Troubleshooting
  21. Datatype Reference
  22. Reporting Views
  23. Metadata Import Syntax
  24. Jasper Reports
  25. Glossary

Data Validation Option User Guide

Data Validation Option User Guide

Back Next

Creating an Expression

Creating an Expression

Use the Expression Editor to create an expression that consists of fields, functions, and parameters. You can use the Expression Editor wherever you can use an expression instead of a field name. When you create an expression, you can view the definitions of PowerCenter functions. You can also view the properties of the fields in the table that you are testing.
  1. In the dialog box in which you are creating a test, select the
    Field is Expression
     option.
  2. Click the
    Expression Editor
     button.
    The
    Expression Editor
     dialog box appears.
  3. To add a function to the expression, click the
    Functions
     tab, and then perform the following tasks:
    1. Expand
      All Functions
       or expand a function category.
    2. To view the description of a function, click the function.
      The description of the function appears on the
      Functions
       tab. Use the information in the function description to determine what fields you can use in the function.
    3. To add a function at a particular location in the expression text box, place the insertion point at the location.
    4. On the
      Functions
       tab, double-click the function.
  4. To add a field to the expression, click the
    Fields
     tab, and then perform the following tasks:
    1. To view the properties of a field, click the field.
      The properties of the field appear on the
      Fields
       tab.
    2. To add a field at a particular location in the expression text box, place the insertion point at the location.
      To pass a field to a function, place the insertion point within the parentheses that follow the function name, and then add the field.
    3. On the
      Functions
       tab, double-click the field.
  5. To add an operator, perform the following tasks:
    1. In the expression text box, place the insertion point where you want to add the operator.
    2. In the
      Operator Keypad
      , click the operator.
  6. To add a number, perform the following tasks:
    1. In the expression text box, place the insertion point where you want to add the number.
    2. In the
      Numeric Keypad
      , click the number.
  7. In
    Type
    , select the PowerCenter data type that you want to apply to the result.
    The PowerCenter data type must be compatible with the data types of the expression components.
  8. In
    Precision
    , enter the precision for the PowerCenter data type that you selected for the expression.
  9. In
    Scale
    , enter the scale for the PowerCenter data type that you selected for the expression.
    The default value of scale is 0.
  10. To validate the expression, click
    Validate
    .
  11. Click
    Save
    .
0 COMMENTS
We’d like to hear from you!