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Theplpymodule also provides the functionsplpy.debug(msg),plpy.log(msg),plpy.info(msg),plpy.notice(msg),plpy.warning(msg),plpy.error(msg), andplpy.fatal(msg).plpy.errorandplpy.fatalactually raise a Python exception which, if uncaught, propagates out to the calling query, causing the current transaction or subtransaction to be aborted.raise plpy.Error(msg)andraise plpy.Fatal(msg)are equivalent to callingplpy.errorandplpy.fatal, respectively. The other functions only generate messages of different priority levels. Whether messages of a particular priority are reported to the client, written to the server log, or both is controlled by the log_min_messages and client_min_messages configuration variables. See Chapter 18 for more information.
