Description
Nicolas Dufour in an email thread titled "functions and list" started on November 2, 2005 requests the ability to create user defined aggregates.
This functionality used to be in Cloudscape. It was disabled presumably because it was considered non-standard. However, most of the machinery needed for this feature is still in the code. We should re-enable user defined aggregates after we agree on acceptable syntax.
Attachments
Attachments
Issue Links
- is related to
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DERBY-3550 The Reference guide says that you can create your own user-defined aggregates, but Derby does not have this capability.
- Closed
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DERBY-6127 Tell users to make sure that the state of a user-defined aggregate needs to be serializable
- Closed
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DERBY-5466 Add support for SQL Standard statistics functions, such as STDDEV_POP, STDDEV_SAMP, VAR_POP, VAR_SAMP
- Closed
- relates to
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DERBY-5901 You can declare user-defined functions which shadow builtin functions by the same name.
- Open