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 and 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

Advanced Workflow Guide

Advanced Workflow Guide

Rules and Guidelines for PostgreSQL

Rules and Guidelines for PostgreSQL

Use the following rules and guidelines for pushdown optimization to a PostgreSQL database:
  • To push the TRUNC(DATE) function to the PostgreSQL database. you must define the date and format arguments.
  • If you define only a string argument for the TO_DATE() and TO_CHAR() functions and omit the format argument, the PowerCenter Integration Service returns a string based on the default date format
    MM/DD/YYYY HH24:MI:SS
    specified in the session property.
  • When you push the SYSTIMESTAMP() function to a PostgreSQL database, do not specify the format argument. If you specify the format for SYSTIMESTAMP, the database ignores the format and returns the complete time stamp.
  • When you push the TO_BIGINT and TO_INTEGER functions to the PostgreSQL database, the PowerCenter Integration Service ignores the flag arguments.
  • When you push the IN() function to the PostgreSQL database, the PowerCenter Integration Service ignores the CaseFlag argument.
  • When you use the NS format string to set the nanoseconds for the ADD_TO_DATE() function, the PowerCenter Integration Service does not push the ADD_TO_DATE() function to PostgreSQL.
  • The PowerCenter Integration Service cannot push TO_CHAR() and TO_DATE() functions to PostgreSQL if you use the following formats:

      NS

      JQW

      SSSSS

      RR

  • You can use the following formats when you push the TRUNC(DATE) function to the PostgreSQL database:

      D

      HH24

      MI

      MM

      MS

      SS

      US

      YYYY



Updated November 14, 2019