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Add stats_reset to pg_stat_user_functions

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It is possible to call pg_stat_reset_single_function_counters() for a
single function, but the reset time was missing the system view showing
its statistics.  Like all the fields of pg_stat_user_functions, the GUC
track_functions needs to be enabled to show the statistics about
function executions.

Bump catalog version.
Bump PGSTAT_FILE_FORMAT_ID, as a result of the new field added to
PgStat_StatFuncEntry.

Author: Bertrand Drouvot <bertranddrouvot.pg@gmail.com>
Discussion: https://postgr.es/m/aONjnsaJSx-nEdfU@paquier.xyz
This commit is contained in:
Michael Paquier
2025-10-08 12:43:40 +09:00
parent 035b09131d
commit b71bae41a0
13 changed files with 90 additions and 8 deletions
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18
src/backend/utils/adt/pgstatfuncs.c
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@@ -203,6 +203,24 @@ PG_STAT_GET_FUNCENTRY_FLOAT8_MS(total_time)
/* pg_stat_get_function_self_time */
PG_STAT_GET_FUNCENTRY_FLOAT8_MS(self_time)
Datum
pg_stat_get_function_stat_reset_time(PG_FUNCTION_ARGS)
{
Oid funcid = PG_GETARG_OID(0);
TimestampTz result;
PgStat_StatFuncEntry *funcentry;
if ((funcentry = pgstat_fetch_stat_funcentry(funcid)) == NULL)
result = 0;
else
result = funcentry->stat_reset_timestamp;
if (result == 0)
PG_RETURN_NULL();
else
PG_RETURN_TIMESTAMPTZ(result);
}
Datum
pg_stat_get_backend_idset(PG_FUNCTION_ARGS)
{