Rumah >pangkalan data >tutorial mysql >Bagaimanakah kita mendapatkan metadata acara MySQL?
Ini boleh dilakukan dengan bantuan pangkalan data INFORMATION_SKEMA. Pernyataan berikut akan memberi kita metadata acara -
mysql> SELECT * from INFORMATION_SCHEMA.EVENTS WHERE EVENT_NAME LIKE '%event%' A ND EVENT_SCHEMA = 'query'\G *************************** 1. row *************************** EVENT_CATALOG: def EVENT_SCHEMA: query EVENT_NAME: testing_event6 DEFINER: root@localhost TIME_ZONE: SYSTEM EVENT_BODY: SQL EVENT_DEFINITION: INSERT INTO event_message(message,generated_at) values('EVENT ALTERED', NOW()) EVENT_TYPE: ONE TIME EXECUTE_AT: 2017-11-22 20:03:52 INTERVAL_VALUE: NULL INTERVAL_FIELD: NULL SQL_MODE: ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION STARTS: NULL ENDS: NULL STATUS: DISABLED ON_COMPLETION: PRESERVE CREATED: 2017-11-22 20:02:52 LAST_ALTERED: 2017-11-22 21:01:17 LAST_EXECUTED: 2017-11-22 20:03:52 EVENT_COMMENT: ORIGINATOR: 0 CHARACTER_SET_CLIENT: cp850 COLLATION_CONNECTION: cp850_general_ci DATABASE_COLLATION: latin1_swedish_ci *************************** 2. row *************************** EVENT_CATALOG: def EVENT_SCHEMA: query EVENT_NAME: testing_event_with_preserves DEFINER: root@localhost TIME_ZONE: SYSTEM EVENT_BODY: SQL EVENT_DEFINITION: INSERT INTO event_MESSAGES(Message, generated_at) Values('Altered',NOW()) EVENT_TYPE: RECURRING EXECUTE_AT: NULL INTERVAL_VALUE: 1 INTERVAL_FIELD: MINUTE SQL_MODE: ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION STARTS: 2017-11-22 21:03:01 ENDS: NULL STATUS: DISABLED ON_COMPLETION: PRESERVE CREATED: 2017-11-22 20:35:12 LAST_ALTERED: 2017-11-22 21:04:42 LAST_EXECUTED: 2017-11-22 20:35:12 EVENT_COMMENT: ORIGINATOR: 0 CHARACTER_SET_CLIENT: cp850 COLLATION_CONNECTION: cp850_general_ci DATABASE_COLLATION: latin1_swedish_ci 2 rows in set (0.00 sec)
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