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-rw-r--r--mysql-test/suite/perfschema/r/dml_events_stages_history_long.result17
1 files changed, 17 insertions, 0 deletions
diff --git a/mysql-test/suite/perfschema/r/dml_events_stages_history_long.result b/mysql-test/suite/perfschema/r/dml_events_stages_history_long.result
index da1fae71aa5..9c20113b2af 100644
--- a/mysql-test/suite/perfschema/r/dml_events_stages_history_long.result
+++ b/mysql-test/suite/perfschema/r/dml_events_stages_history_long.result
@@ -27,3 +27,20 @@ UNLOCK TABLES;
LOCK TABLES performance_schema.events_stages_history_long WRITE;
ERROR 42000: SELECT, LOCK TABLES command denied to user 'root'@'localhost' for table 'events_stages_history_long'
UNLOCK TABLES;
+#
+# MDEV-25325 column_comment for performance_schema tables
+#
+select column_name, column_comment
+from information_schema.columns
+where table_schema='performance_schema' and table_name='events_stages_history_long';
+column_name column_comment
+THREAD_ID Thread associated with the event. Together with EVENT_ID uniquely identifies the row.
+EVENT_ID Thread's current event number at the start of the event. Together with THREAD_ID uniquely identifies the row.
+END_EVENT_ID NULL when the event starts, set to the thread's current event number at the end of the event.
+EVENT_NAME Event instrument name and a NAME from the setup_instruments table
+SOURCE Name and line number of the source file containing the instrumented code that produced the event.
+TIMER_START Value in picoseconds when the event timing started or NULL if timing is not collected.
+TIMER_END Value in picoseconds when the event timing ended, or NULL if the event has not ended or timing is not collected.
+TIMER_WAIT Value in picoseconds of the event's duration or NULL if the event has not ended or timing is not collected.
+NESTING_EVENT_ID EVENT_ID of event within which this event nests.
+NESTING_EVENT_TYPE Nesting event type. Either statement, stage or wait.