
322 DB2 II and WPS Synergy
Figure B-76 Test DEMO_NN nickname results
B.8.6 Register the Extended Search custom function
This is an optional step in the main task for adding Extended Search data
sources to a federated system.
Custom functions contain no executable code. After you register a function, you
can refer to it in queries to alter default search behavior. The custom function for
the Extended Search wrapper is ES_SEARCH, which enables you to specify
precise search expressions and search content that is not defined as a column in
the nickname table.
The restrictions with the use of ES_SEARCH are as follows:
You can call the ES_SEARCH functi ...