Table of Contents

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  1. Preface
  2. Understanding Pipeline Partitioning
  3. Partition Points
  4. Partition Types
  5. Pushdown Optimization
  6. Pushdown Optimization Transformations
  7. Real-time Processing
  8. Commit Points
  9. Row Error Logging
  10. Workflow Recovery
  11. Stopping and Aborting
  12. Concurrent Workflows
  13. Grid Processing
  14. Load Balancer
  15. Workflow Variables
  16. Parameters and Variables in Sessions
  17. Parameter Files
  18. FastExport
  19. External Loading
  20. FTP
  21. Session Caches
  22. Incremental Aggregation
  23. Session Log Interface
  24. Understanding Buffer Memory
  25. High Precision Data
  26. POWERCENTERHELP

Advanced Workflow Guide

Advanced Workflow Guide

Decimal

Decimal

When a session runs without high precision, the Integration Service converts decimal values to doubles. The transformation Decimal datatype supports precision of up to 28 digits, while the Double datatype supports precision of up to 15 digits. Therefore, precision loss occurs if the decimal value has a precision greater than 15 digits.
For example, you have a mapping with Decimal (20,0) that passes the number 40012030304957666903. If the session does not run with high precision, the Integration Service converts the decimal value to double and passes 4.00120303049577 x 10
19
.
To ensure precision of up to 28 digits, use the Decimal datatype and enable high precision in the session properties. When you run a session with high precision, the Integration Service processes decimal values as Decimal. Precision loss does not occur in a calculation unless the result produces a value with precision greater than 28 digits. In this case, the Integration Service stores the result as a double.


Updated July 04, 2018