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-rw-r--r--src/include/commands/async.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/include/commands/async.h b/src/include/commands/async.h
index 8491f4736f7..677dcaa3d03 100644
--- a/src/include/commands/async.h
+++ b/src/include/commands/async.h
@@ -37,6 +37,7 @@ extern void Async_UnlistenAll(void);
/* notify-related SQL functions */
extern Datum pg_listening_channels(PG_FUNCTION_ARGS);
extern Datum pg_notify(PG_FUNCTION_ARGS);
+extern Datum pg_notification_queue_usage(PG_FUNCTION_ARGS);
/* perform (or cancel) outbound notify processing at transaction commit */
extern void PreCommit_Notify(void);