我正在尝试将我的 mysql 语句转换为 laravel 查询生成器。在以下查询中,我尝试对从三个表的 UNION-ing 结果中获取的列执行 GROUP BY 和 ORDER BY
- staff_task_history_calibrate
- staff_task_history_samples
- staff_task_history_measures
大家有遇到过类似的吗?如果是的话,你能解释一下我的问题吗?
SELECT staff_name, task_id, task_type, task_desc, SUM(task_multiplier)
FROM
(
(
select CONCAT(S.first_name," ",S.last_name) as staff_name,
`STHC`.`task_id`, IFNULL(T.type, "-") as task_type,
`T`.`description` as `task_desc`,
STHC.task_multiplier
from `staff_task_history_calibrate` as `STHC`
inner join `staffs` as `S` on `STHC`.`staff_id` = `S`.`staff_id` inner join `tasks` as `T` on `STHC`.`task_id` = `T`.`id`
)
union
(
select CONCAT(S.first_name," ",S.last_name) as staff_name,
`STHS`.`task_id`, IFNULL(T.type, "-") as task_type,
`T`.`description` as `task_desc`,
STHS.task_multiplier
from `staff_task_history_samples` as `STHS`
inner join `staffs` as `S` on `STHS`.`staff_id` = `S`.`staff_id` inner join `tasks` as `T` on `STHS`.`task_id` = `T`.`id`
)
union
(
select CONCAT(S.first_name," ",S.last_name) as staff_name,
`STHM`.`task_id`, IFNULL(T.type, "-") as task_type,
`T`.`description` as `task_desc`,
STHM.task_multiplier
from `staff_task_history_measures` as `STHM`
inner join `staffs` as `S` on `STHM`.`staff_id` = `S`.`staff_id` inner join `tasks` as `T` on `STHM`.`task_id` = `T`.`id`
)
) combined_tables
GROUP BY staff_name, task_type, task_desc
ORDER BY staff_name, task_type, task_desc;