下面的查询执行时间超过 11 分钟。
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` … +----+--------------+-----+-----------+----------+
| ID | NAME | AGE | ADDRESS | SALARY |
+----+--------------+-----+-----------+----------+
| 1 | Ramesh Olive | 32 | Ahmedabad | 2000.00 |
| 2 | Tan Kau | 25 | Delhi | 1500.00 |
| 3 | Jason Tan Kau| 25 | Delhi | 2000.00 |
| 4 | Chaitali | 25 | Mumbai | 6500.00 |
| 5 | Hardik | 27 | Bhopal | 8500.00 |
| 6 | Hardik Jass | 27 | Bhopal …