Performance Profiling

Total processing time: 100 ms; Peak memory: 7.056 MB. Show Profiling Timeline

总计9条数据。

Time	Duration	Category	Info

07:03:50.329	3.0 ms	yii\db\Connection::open	Opening DB connection: mysql:host=mysql-teach;dbname=teach_exam
07:03:50.337	1.6 ms	yii\db\Command::query	SELECT * FROM `paper` WHERE `id`='22'
07:03:50.352	1.2 ms	yii\db\Command::query	SELECT * FROM `paper_question` WHERE (`question_type`='select') AND (`paper_id`='22') ORDER BY `sort`
07:03:50.341	1.0 ms	yii\db\Command::query	SHOW FULL COLUMNS FROM `paper`
07:03:50.343	0.9 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` = 'paper' AND `kcu`.`TABLE_NAME` = 'paper'
07:03:50.354	0.7 ms	yii\db\Command::query	SELECT * FROM `paper_question` WHERE (`question_type`='fill') AND (`paper_id`='22') ORDER BY `sort`
07:03:50.353	0.7 ms	yii\db\Command::query	SELECT * FROM `paper_question` WHERE (`question_type`='multiselect') AND (`paper_id`='22') ORDER BY `sort`
07:03:50.355	0.7 ms	yii\db\Command::query	SELECT * FROM `paper_question` WHERE (`question_type`='judge') AND (`paper_id`='22') ORDER BY `sort`
07:03:50.356	0.5 ms	yii\db\Command::query	SELECT * FROM `paper_question` WHERE (`question_type`='text') AND (`paper_id`='22') ORDER BY `sort`