Netezza Data Source Limitations

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Placeholder parameters (designated by question marks) in prepared statements cannot be evaluated for use with the Netezza data ship optimization, because the variable must be resolved prior to submission.

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Federated queries with database-specific functions must be able to push that SQL directly to the data source, or the query will fail.

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Netezza UDA and UDF need to be assigned full resource names so they can be used in queries.

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Composite views can invoke Netezza UDA or UDF using full TDV resource names of the following general form: /users/composite/admin/Netezza/Aggregate/Builtin/”COUNT”()

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Each query (including the initial costing of the query) is executed using its own run-time connection thread, which is returned to the pool when the query is completed.