Performance Profiling

Total processing time: 93 ms; Peak memory: 6.991 MB. Show Profiling Timeline

总计4条数据。

Time	Duration	Category	Info

22:54:06.792	2.1 ms	yii\db\Connection::open	→Opening DB connection: mysql:host=mysql-teach;dbname=teach_exam
22:54:06.797	1.0 ms	yii\db\Command::query	→SHOW FULL COLUMNS FROM `exam`
22:54:06.796	0.8 ms	yii\db\Command::query	→SELECT * FROM `exam` WHERE (`user_id`='1') AND (`is_publish` IN (1, 2)) AND (`id`='46')
22:54:06.798	0.7 ms	yii\db\Command::query	→SELECT `kcu`.`CONSTRAINT_NAME` AS `constraint_name`, `kcu`.`COLUMN_NAME` AS `column_name`, `kcu`.`REFERENCED_TABLE_NAME` AS `referenced_table_name`, `kcu`.`REFERENCED_COLUMN_NAME` AS `referenced_column_name` FROM `information_schema`.`REFERENTIAL_CONSTRAINTS` AS `rc` JOIN `information_schema`.`KEY_COLUMN_USAGE` AS `kcu` ON ( `kcu`.`CONSTRAINT_CATALOG` = `rc`.`CONSTRAINT_CATALOG` OR (`kcu`.`CONSTRAINT_CATALOG` IS NULL AND `rc`.`CONSTRAINT_CATALOG` IS NULL) ) AND `kcu`.`CONSTRAINT_SCHEMA` = `rc`.`CONSTRAINT_SCHEMA` AND `kcu`.`CONSTRAINT_NAME` = `rc`.`CONSTRAINT_NAME` WHERE `rc`.`CONSTRAINT_SCHEMA` = database() AND `kcu`.`TABLE_SCHEMA` = database() AND `rc`.`TABLE_NAME` = 'exam' AND `kcu`.`TABLE_NAME` = 'exam'