我有2个表config_location_workstation和asset_workstation,它们的列和地板号都为列。
我希望查询返回类似这样的内容:
地板|汇总生产工作站|总头数
下面的代码来自另一个来源,我能够提取总和,但数字不正确,因为我想获取的是所有生产工作站的编号。
SELECT config_location_workstation1.floor,
(SELECT COUNT(config_location_workstation2.workstation_number)
FROM config_location_workstation AS config_location_workstation2
WHERE config_location_workstation2.floor = config_location_workstation1.floor) AS SUM_FLOOR,
(SELECT COUNT(asset_workstation2.workstation_number)
FROM asset_workstation AS asset_workstation2
WHERE asset_workstation2.floor = config_location_workstation1.floor) AS SUM_HEAD
FROM config_location_workstation AS config_location_workstation1
INNER JOIN asset_workstation AS asset_workstation1
ON (config_location_workstation1.workstation_number = asset_workstation1.workstation_number)
WHERE config_location_workstation1.workstation_name = 'NORTH PRODUCTION'
GROUP BY config_location_workstation1.floor
问题在于,此代码无法使用。工作站列总和无效。它拉起所有条目。我只需要查询所有PRODUCTION工作站
这是当前输出。
+-------+-------------+------+------+
| Floor | Head Count | Workstations|
+-------+-------------+------+------+
| 18TH | 696 | 576 |
| 19TH | 381 | 463 |
| 20TH | 380 | 760 |
+-------+-------------+------+------+
所有生产工作站的预期输出
+-------+-------------+------+------+
| Floor | Head Count | Workstations|
+-------+-------------+------+------+
| 18TH | 696 | 497 |
| 19TH | 381 | 388 |
| 20TH | 380 | 659 |
+-------+-------------+------+------+
可能您可以尝试使用子查询
select * from (
SELECT config_location_workstation1.floor,config_location_workstation1.workstation_name as z,
(SELECT COUNT(config_location_workstation2.workstation_number)
FROM config_location_workstation AS config_location_workstation2
WHERE config_location_workstation2.floor = config_location_workstation1.floor) AS SUM_FLOOR,
(SELECT COUNT(asset_workstation2.workstation_number)
FROM asset_workstation AS asset_workstation2
WHERE asset_workstation2.floor = config_location_workstation1.floor) AS SUM_HEAD
FROM config_location_workstation AS config_location_workstation1
INNER JOIN asset_workstation AS asset_workstation1
ON (config_location_workstation1.workstation_number = asset_workstation1.workstation_number)
GROUP BY config_location_workstation1.floor
) x
WHERE z = 'NORTH PRODUCTION'
UPDATE:
select x.*,y.* from ( SELECT *, COUNT(workstation_name) as COUNT_FLOOR
FROM config_location_workstation WHERE workstation_name LIKE '%PRODUCTION%' GROUP BY floor)x
join
(SELECT *, COUNT(floor) as COUNT_USERS FROM asset_workstation GROUP BY floor) y on
x.workstation_number = y.workstation_number