Add C comment mentioning pg_stat_activity.procpid should have been

called 'pid'.

diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index f811245..12dbff4 100644 (file)
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -509,6 +509,7 @@ pg_stat_get_activity(PG_FUNCTION_ARGS)
                tupdesc = CreateTemplateTupleDesc(12, false);
                TupleDescInitEntry(tupdesc, (AttrNumber) 1, "datid",
                                                   OIDOID, -1, 0);
+               /* This should have been called 'pid';  can't change it. 2011-06-11 */
                TupleDescInitEntry(tupdesc, (AttrNumber) 2, "procpid",
                                                   INT4OID, -1, 0);
                TupleDescInitEntry(tupdesc, (AttrNumber) 3, "usesysid",