Dưới đây truy vấn mất hơn 11 phút để thực hiện.
SELECT `c`.*,
`e`.`name` AS `employee_name`,
`e`.`emp_no`,
`d`.`code` AS `department_code`,
IF(ew.code IS NOT NULL, ew.code, egw.code) AS shift_code,
IF(ew.code IS NOT NULL, ew.time_in_from, egw.time_in_from) AS time_in_from,
IF(ew.code IS NOT NULL, ew.time_out_to, egw.time_out_to) AS time_out_to,
IF(ew.code IS NOT NULL, ew.next_day, egw.next_day) AS next_day
FROM `tms_emp_badge_card` AS `c`
LEFT JOIN `tms_door_record_raw` AS `dr`
ON `c`.`card_no` = `dr`.`card_no`
LEFT JOIN `tms_employee` AS `e`
ON `c`.`emp_no` = `e`.`emp_no`
LEFT JOIN `tms_emp_group` AS `g`
ON `e`.`group_id` = `g`.`id`
LEFT JOIN `tms_emp_department` AS `d`
ON `e`.`department_id` = `d`.`id`
LEFT JOIN `tms_emp_workschedule` AS `ewt`
ON `ewt`.`workschedule_date` = "2016-11-01"
AND ( ewt.reference_no = c.emp_no
AND ewt.reference_type = "emp_no" )
LEFT JOIN `tms_workschedule` AS `ew`
ON `ewt`.`workschedule_id` = `ew`.`id`
LEFT JOIN `tms_emp_workschedule` AS `egwt`
ON `egwt`.`workschedule_date` = "2016-11-01"
AND ( egwt.reference_no = g.code
AND egwt.reference_type = "group_code" )
LEFT JOIN `tms_workschedule` AS `egw`
ON `egwt`.`workschedule_id` = `egw`.`id`
WHERE `dr`.`record_time` BETWEEN '2016-11-01' AND '2016-11-02'
GROUP BY `c`.`card_no`
ORDER BY c.emp_no
Dưới đây là câu hỏi giải thích
+----+-------------+-------+------------+--------+-------------------------------------------------------------------------+-----------------------------------------+---------+--------------------------+------+----------+---------------------------------+
| id | select_type | table | partitions | type | possible_keys | key | key_len | ref | rows | filtered | Extra |
+----+-------------+-------+------------+--------+-------------------------------------------------------------------------+-----------------------------------------+---------+--------------------------+------+----------+---------------------------------+
| 1 | SIMPLE | c | NULL | ALL | tms_emp_badge_card_card_no_index,emp_card_no | NULL | NULL | NULL | 884 | 100.00 | Using temporary; Using filesort |
| 1 | SIMPLE | e | NULL | eq_ref | tms_employee_emp_no_unique | tms_employee_emp_no_unique | 767 | tms.c.emp_no | 1 | 100.00 | NULL |
| 1 | SIMPLE | g | NULL | eq_ref | PRIMARY | PRIMARY | 4 | tms.e.group_id | 1 | 100.00 | NULL |
| 1 | SIMPLE | d | NULL | eq_ref | PRIMARY | PRIMARY | 4 | tms.e.department_id | 1 | 100.00 | NULL |
| 1 | SIMPLE | dr | NULL | ref | tms_door_record_raw_card_no_index,tms_door_record_raw_record_time_index | tms_door_record_raw_card_no_index | 767 | tms.c.card_no | 276 | 1.27 | Using where |
| 1 | SIMPLE | ewt | NULL | ref | tms_emp_workschedule_reference_no_index,workschedule_date | tms_emp_workschedule_reference_no_index | 767 | tms.c.emp_no | 83 | 100.00 | Using where |
| 1 | SIMPLE | ew | NULL | eq_ref | PRIMARY | PRIMARY | 4 | tms.ewt.workschedule_id | 1 | 100.00 | NULL |
| 1 | SIMPLE | egwt | NULL | ref | tms_emp_workschedule_reference_no_index,workschedule_date | tms_emp_workschedule_reference_no_index | 767 | tms.g.code | 83 | 100.00 | Using where |
| 1 | SIMPLE | egw | NULL | eq_ref | PRIMARY | PRIMARY | 4 | tms.egwt.workschedule_id | 1 | 100.00 | NULL |
+----+-------------+-------+------------+--------+-------------------------------------------------------------------------+-----------------------------------------+---------+--------------------------+------+----------+---------------------------------+
Cấu trúc bảng
CREATE TABLE `tms_emp_badge_card` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`import_id` int(11) DEFAULT NULL,
`emp_no` varchar(255) COLLATE utf8_unicode_ci NOT NULL,
`card_no` varchar(255) COLLATE utf8_unicode_ci NOT NULL,
`created_at` timestamp NULL DEFAULT NULL,
`updated_at` timestamp NULL DEFAULT NULL,
`deleted_at` timestamp NULL DEFAULT NULL,
PRIMARY KEY (`id`),
UNIQUE KEY `tms_emp_badge_card_import_id_unique` (`import_id`),
KEY `tms_emp_badge_card_emp_no_index` (`emp_no`),
KEY `tms_emp_badge_card_card_no_index` (`card_no`),
KEY `emp_card_no` (`card_no`,`emp_no`) USING BTREE
) ENGINE=InnoDB AUTO_INCREMENT=885 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci
CREATE TABLE `tms_door_record_raw` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`import_id` int(11) DEFAULT NULL,
`card_no` varchar(255) COLLATE utf8_unicode_ci NOT NULL,
`door_no` varchar(255) COLLATE utf8_unicode_ci NOT NULL,
`controller_no` varchar(255) COLLATE utf8_unicode_ci NOT NULL,
`record_time` datetime NOT NULL,
`record_state` int(11) NOT NULL,
`open_type` int(11) NOT NULL,
`pass_flag` int(11) NOT NULL,
`hand_value` int(11) NOT NULL,
`lfeet_value` int(11) NOT NULL,
`rfeet_value` int(11) NOT NULL,
`created_at` timestamp NULL DEFAULT NULL,
`updated_at` timestamp NULL DEFAULT NULL,
`deleted_at` timestamp NULL DEFAULT NULL,
PRIMARY KEY (`id`),
UNIQUE KEY `tms_door_record_raw_import_id_unique` (`import_id`),
KEY `tms_door_record_raw_card_no_index` (`card_no`),
KEY `tms_door_record_raw_door_no_index` (`door_no`),
KEY `tms_door_record_raw_controller_no_index` (`controller_no`),
KEY `tms_door_record_raw_record_time_index` (`record_time`)
) ENGINE=InnoDB AUTO_INCREMENT=368713 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci
CREATE TABLE `tms_employee` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`import_id` int(11) DEFAULT NULL,
`emp_no` varchar(255) COLLATE utf8_unicode_ci NOT NULL,
`name` varchar(255) COLLATE utf8_unicode_ci DEFAULT NULL,
`email` varchar(255) COLLATE utf8_unicode_ci DEFAULT NULL,
`plant_id` int(10) unsigned DEFAULT NULL,
`department_id` int(10) unsigned DEFAULT NULL,
`group_id` int(10) unsigned DEFAULT NULL,
`attendance_group_id` int(11) NOT NULL,
`created_at` timestamp NULL DEFAULT NULL,
`updated_at` timestamp NULL DEFAULT NULL,
`deleted_at` timestamp NULL DEFAULT NULL,
PRIMARY KEY (`id`),
UNIQUE KEY `tms_employee_emp_no_unique` (`emp_no`),
UNIQUE KEY `tms_employee_import_id_unique` (`import_id`),
KEY `tms_employee_plant_id_foreign` (`plant_id`),
KEY `tms_employee_department_id_foreign` (`department_id`),
KEY `tms_employee_group_id_foreign` (`group_id`),
CONSTRAINT `tms_employee_department_id_foreign` FOREIGN KEY (`department_id`) REFERENCES `tms_emp_department` (`id`) ON DELETE CASCADE,
CONSTRAINT `tms_employee_group_id_foreign` FOREIGN KEY (`group_id`) REFERENCES `tms_emp_group` (`id`) ON DELETE CASCADE,
CONSTRAINT `tms_employee_plant_id_foreign` FOREIGN KEY (`plant_id`) REFERENCES `tms_emp_plant` (`id`) ON DELETE CASCADE
) ENGINE=InnoDB AUTO_INCREMENT=865 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci
p_no`,
`d (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`import_id` int(11) DEFAULT NULL,
`code` varchar(255) COLLATE utf8_unicode_ci NOT NULL,
`description` varchar(255) COLLATE utf8_unicode_ci NOT NULL,
`created_at` timestamp NULL DEFAULT NULL,
`updated_at` timestamp NULL DEFAULT NULL,
`deleted_at` timestamp NULL DEFAULT NULL,
PRIMARY KEY (`id`),
UNIQUE KEY `tms_emp_group_import_id_unique` (`import_id`),
KEY `tms_emp_group_code_index` (`code`)
) ENGINE=InnoDB AUTO_INCREMENT=48 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci
CREATE TABLE `tms_emp_department` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`import_id` int(11) DEFAULT NULL,
`code` varchar(255) COLLATE utf8_unicode_ci NOT NULL,
`description` varchar(255) COLLATE utf8_unicode_ci NOT NULL,
`created_at` timestamp NULL DEFAULT NULL,
`updated_at` timestamp NULL DEFAULT NULL,
`deleted_at` timestamp NULL DEFAULT NULL,
PRIMARY KEY (`id`),
UNIQUE KEY `tms_emp_department_import_id_unique` (`import_id`),
KEY `tms_emp_department_code_index` (`code`)
) ENGINE=InnoDB AUTO_INCREMENT=82 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci
CREATE TABLE `tms_emp_workschedule` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`import_id` int(11) DEFAULT NULL,
`reference_type` enum('emp_no','plant_code','department_code','group_code') COLLATE utf8_unicode_ci NOT NULL,
`reference_no` varchar(255) COLLATE utf8_unicode_ci NOT NULL,
`workschedule_id` int(10) unsigned NOT NULL,
`workschedule_date` date NOT NULL,
`created_at` timestamp NULL DEFAULT NULL,
`updated_at` timestamp NULL DEFAULT NULL,
`deleted_at` timestamp NULL DEFAULT NULL,
PRIMARY KEY (`id`),
UNIQUE KEY `tms_emp_workschedule_import_id_unique` (`import_id`),
KEY `tms_emp_workschedule_reference_no_index` (`reference_no`),
KEY `tms_emp_workschedule_workschedule_id_foreign` (`workschedule_id`),
KEY `workschedule_date` (`workschedule_date`),
CONSTRAINT `tms_emp_workschedule_workschedule_id_foreign` FOREIGN KEY (`workschedule_id`) REFERENCES `tms_workschedule` (`id`) ON DELETE CASCADE
) ENGINE=InnoDB AUTO_INCREMENT=27597 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci
CREATE TABLE `tms_workschedule` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`import_id` int(11) DEFAULT NULL,
`code` varchar(255) COLLATE utf8_unicode_ci NOT NULL,
`description` varchar(255) COLLATE utf8_unicode_ci NOT NULL,
`time_in` time NOT NULL,
`time_in_from` time NOT NULL,
`time_in_to` time NOT NULL,
`time_out` time NOT NULL,
`time_out_from` time NOT NULL,
`time_out_to` time NOT NULL,
`next_day` tinyint(1) NOT NULL,
`created_at` timestamp NULL DEFAULT NULL,
`updated_at` timestamp NULL DEFAULT NULL,
`deleted_at` timestamp NULL DEFAULT NULL,
PRIMARY KEY (`id`),
UNIQUE KEY `tms_workschedule_import_id_unique` (`import_id`),
KEY `tms_workschedule_code_index` (`code`)
) ENGINE=InnoDB AUTO_INCREMENT=45 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci
Tôi đang suy nghĩ liệu là "Sử dụng tạm thời; Sử dụng vấn đề về tập tin" hay tôi nên tạo chỉ mục nhiều cột nhưng tôi không biết cách khắc phục. Xin tư vấn.
Cập nhật 1:
Sau khi thêm chỉ mục nhiều cột trên bảng tms_door_record_raw (KEY card_no_record_time
( card_no
, record_time
)) Việc thực hiện sql đã giảm từ 11 phút xuống còn 3,2 giây
Thực hiện giải thích sql một lần nữa. Khóa bảng tham gia dr
đã thay đổi từ (card_no) thành (card_no, record_time) trên cột thêm mà nó đang hiển thịUsing where; Using index
+----+-------------+-------+------------+--------+---------------------------------------------------------------------------------------------+-----------------------------------------+---------+--------------------------+------+----------+---------------------------------+
| id | select_type | table | partitions | type | possible_keys | key | key_len | ref | rows | filtered | Extra |
+----+-------------+-------+------------+--------+---------------------------------------------------------------------------------------------+-----------------------------------------+---------+--------------------------+------+----------+---------------------------------+
| 1 | SIMPLE | c | NULL | ALL | tms_emp_badge_card_card_no_index,emp_card_no | NULL | NULL | NULL | 884 | 100.00 | Using temporary; Using filesort |
| 1 | SIMPLE | e | NULL | eq_ref | tms_employee_emp_no_unique | tms_employee_emp_no_unique | 767 | tms.c.emp_no | 1 | 100.00 | NULL |
| 1 | SIMPLE | g | NULL | eq_ref | PRIMARY | PRIMARY | 4 | tms.e.group_id | 1 | 100.00 | NULL |
| 1 | SIMPLE | d | NULL | eq_ref | PRIMARY | PRIMARY | 4 | tms.e.department_id | 1 | 100.00 | NULL |
| *1 | SIMPLE | dr | NULL | ref | tms_door_record_raw_card_no_index,tms_door_record_raw_record_time_index,record_time_card_no | record_time_card_no | 767 | tms.c.card_no | 266 | 1.27 | Using where; Using index |
| 1 | SIMPLE | ewt | NULL | ref | tms_emp_workschedule_reference_no_index,workschedule_date | tms_emp_workschedule_reference_no_index | 767 | tms.c.emp_no | 83 | 100.00 | Using where |
| 1 | SIMPLE | ew | NULL | eq_ref | PRIMARY | PRIMARY | 4 | tms.ewt.workschedule_id | 1 | 100.00 | NULL |
| 1 | SIMPLE | egwt | NULL | ref | tms_emp_workschedule_reference_no_index,workschedule_date | tms_emp_workschedule_reference_no_index | 767 | tms.g.code | 83 | 100.00 | Using where |
| 1 | SIMPLE | egw | NULL | eq_ref | PRIMARY | PRIMARY | 4 | tms.egwt.workschedule_id | 1 | 100.00 | NULL |
+----+-------------+-------+------------+--------+---------------------------------------------------------------------------------------------+-----------------------------------------+---------+--------------------------+------+----------+---------------------------------+
Cập nhật 2:
Xóa dr
sql tham gia và thay thế bằng nơi điều kiện tồn tại được đề xuất bởi @mendosi thay đổi thời gian thực hiện thành 0,60 giây.
SELECT `c`.*,
`e`.`name` AS `employee_name`,
`e`.`emp_no`,
`d`.`code` AS `department_code`,
IF(ew.code IS NOT NULL, ew.code, egw.code) AS shift_code,
IF(ew.code IS NOT NULL, ew.time_in_from, egw.time_in_from) AS time_in_from,
IF(ew.code IS NOT NULL, ew.time_out_to, egw.time_out_to) AS time_out_to,
IF(ew.code IS NOT NULL, ew.next_day, egw.next_day) AS next_day
FROM `tms_emp_badge_card` AS `c`
LEFT JOIN `tms_employee` AS `e`
ON `c`.`emp_no` = `e`.`emp_no`
LEFT JOIN `tms_emp_group` AS `g`
ON `e`.`group_id` = `g`.`id`
LEFT JOIN `tms_emp_department` AS `d`
ON `e`.`department_id` = `d`.`id`
LEFT JOIN `tms_emp_workschedule` AS `ewt`
ON `ewt`.`workschedule_date` = "2016-11-01"
AND ( ewt.reference_no = c.emp_no
AND ewt.reference_type = "emp_no" )
LEFT JOIN `tms_workschedule` AS `ew`
ON `ewt`.`workschedule_id` = `ew`.`id`
LEFT JOIN `tms_emp_workschedule` AS `egwt`
ON `egwt`.`workschedule_date` = "2016-11-01"
AND ( egwt.reference_no = g.code
AND egwt.reference_type = "group_code" )
LEFT JOIN `tms_workschedule` AS `egw`
ON `egwt`.`workschedule_id` = `egw`.`id`
WHERE EXISTS (SELECT 1 FROM tms_door_record_raw As dr WHERE c.card_no = dr.card_no AND dr.record_time BETWEEN '2016-11-01' AND '2016-11-02')
ORDER BY c.emp_no;
Dưới đây là giải thích sql
+----+--------------------+-------+------------+--------+---------------------------------------------------------------------------------------------+-----------------------------------------+---------+--------------------------+------+----------+--------------------------+
| id | select_type | table | partitions | type | possible_keys | key | key_len | ref | rows | filtered | Extra |
+----+--------------------+-------+------------+--------+---------------------------------------------------------------------------------------------+-----------------------------------------+---------+--------------------------+------+----------+--------------------------+
| 1 | PRIMARY | c | NULL | ALL | NULL | NULL | NULL | NULL | 884 | 100.00 | Using where |
| 1 | PRIMARY | e | NULL | eq_ref | tms_employee_emp_no_unique | tms_employee_emp_no_unique | 767 | tms.c.emp_no | 1 | 100.00 | NULL |
| 1 | PRIMARY | g | NULL | eq_ref | PRIMARY | PRIMARY | 4 | tms.e.group_id | 1 | 100.00 | NULL |
| 1 | PRIMARY | d | NULL | eq_ref | PRIMARY | PRIMARY | 4 | tms.e.department_id | 1 | 100.00 | NULL |
| 1 | PRIMARY | ewt | NULL | ref | tms_emp_workschedule_reference_no_index,workschedule_date | tms_emp_workschedule_reference_no_index | 767 | tms.c.emp_no | 83 | 100.00 | Using where |
| 1 | PRIMARY | ew | NULL | eq_ref | PRIMARY | PRIMARY | 4 | tms.ewt.workschedule_id | 1 | 100.00 | NULL |
| 1 | PRIMARY | egwt | NULL | ref | tms_emp_workschedule_reference_no_index,workschedule_date | tms_emp_workschedule_reference_no_index | 767 | tms.g.code | 83 | 100.00 | Using where |
| 1 | PRIMARY | egw | NULL | eq_ref | PRIMARY | PRIMARY | 4 | tms.egwt.workschedule_id | 1 | 100.00 | NULL |
| 2 | DEPENDENT SUBQUERY | dr | NULL | ref | tms_door_record_raw_card_no_index,tms_door_record_raw_record_time_index,record_time_card_no | record_time_card_no | 767 | tms.c.card_no | 266 | 1.27 | Using where; Using index |
+----+--------------------+-------+------------+--------+---------------------------------------------------------------------------------------------+-----------------------------------------+---------+--------------------------+------+----------+--------------------------+
LEFT JOIN:s
cần thiết hoặc một số trong số chúng có thể được thay thế bằngINNER JOIN:s