Preface
Introduction to PowerExchange
- PowerExchange Overview
- PowerExchange Components
DBMOVER Configuration File
Netport Jobs
PowerExchange Message Logs and Destination Overrides
- PowerExchange Message Logs
  - PowerExchange Message Log File
  - PowerExchange Alternative Log Files
    - Determining the Size of the Alternative Log Data Sets on z/OS
    - Allocation Options for Alternative Log Data Sets on z/OS
- PowerExchange Message Destination Overrides
  - DTLMSGO File and Statements
SMF Statistics Logging and Reporting
PowerExchange Security
Secure Sockets Layer Support
PowerExchange Alternative Network Security
PowerExchange Nonrelational SQL
PowerExchange Globalization
Using the PowerExchange ODBC Drivers
PowerExchange Datatypes and Conversion Matrix
- PowerExchange Datatype Conversions
- ODBC and PowerExchange Datatype Equivalencies
Appendix A: DTL__CAPXTIMESTAMP Time Stamps
- Time Stamps That Are Reported in the DTL__CAPXTIMESTAMP Field by Data Source
Appendix B: PowerExchange Glossary
- Glossary of Terms

Reference Manual

10.5
- 10.5.6
- 10.5.5
- 10.5.4
- 10.5.3
- 10.5.2
- 10.5.1
- 10.4.1
- 10.4.0 HotFix 1
- 10.4.0

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NULL Comparison

This comparison is testing a column for being NULL or NOT NULL. It is treated as though it is less than any other possible value therefore it cannot be equal to anything other than another NULL column.

Example:

col1 IS  [NOT] NULL

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Reference Manual

Reference Manual

NULL Comparison

NULL Comparison