Checking a user-defined aggregate (UDA)

In cqlsh, the DESCRIBE AGGREGATE command outputs the full details of a user-defined aggregate. Use the output from the DESCRIBE command to recreate the UDA.

This command requires a keyspace. Ideally you have also created an aggregate, but it isn’t required.

Verify that a UDA exists:

DESCRIBE AGGREGATE cycling.average;

The response is the CREATE FUNCTION command that was used to create the function if it exists. Otherwise, the response indicates that the function doesn’t exist.

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