Performance Profiling

Total processing time: 98 ms; Peak memory: 7.290 MB. Show Profiling Timeline

总计12条数据。

Time	Duration	Category	Info

02:03:49.272	2.5 ms	yii\db\Connection::open	Opening DB connection: mysql:host=mysql-teach;dbname=teach_exam
02:03:49.302	2.1 ms	yii\db\Command::query	SELECT * FROM `classify` WHERE `id`=23
02:03:49.280	1.9 ms	yii\db\Command::query	SELECT * FROM `paper_course_chapter_relation` WHERE (`is_deleted`=1) AND (`course_id`='135')
02:03:49.300	1.3 ms	yii\db\Command::query	SELECT * FROM `paper_question` WHERE `paper_id`='22' ORDER BY `sort`
02:03:49.288	1.2 ms	yii\db\Command::query	SELECT COUNT(*) FROM `paper` WHERE `id` IN (22, 22)
02:03:49.291	1.1 ms	yii\db\Command::query	SHOW FULL COLUMNS FROM `paper`
02:03:49.282	1.0 ms	yii\db\Command::query	SHOW FULL COLUMNS FROM `paper_course_chapter_relation`
02:03:49.304	0.9 ms	yii\db\Command::query	SHOW FULL COLUMNS FROM `classify`
02:03:49.285	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_course_chapter_relation' AND `kcu`.`TABLE_NAME` = 'paper_course_chapter_relation'
02:03:49.305	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` = 'classify' AND `kcu`.`TABLE_NAME` = 'classify'
02:03:49.289	0.6 ms	yii\db\Command::query	SELECT * FROM `paper` WHERE `id` IN (22, 22) ORDER BY `updated_at` DESC LIMIT 10
02:03:49.292	0.6 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'