Question

我试图让这个查询从我的department_id表中选择每个departments，然后将这些值（大约有30个左右）传递到子查询中，如此< / p>

SELECT Count(problems.id) AS Problems, 
departments.dname AS Company, 
departments.department_id AS CompanyID,
(SELECT COUNT(*) FROM problems WHERE problems.status BETWEEN 1 AND 8) AS totalopentickets, 
(SELECT COUNT(*) FROM problems WHERE status = 100) AS totalclosedtickets, 
(SELECT COUNT(problems.department) FROM problems WHERE problems.status = 100 AND problems.department = CompanyID) AS departmentclosed, 
(SELECT COUNT(problems.department) FROM problems WHERE problems.status BETWEEN 1 AND  8 AND problems.department = CompanyID) AS departmentopen
FROM problems 
INNER JOIN departments ON problems.department = departments.department_id
GROUP BY departments.dname, departments.department_id
ORDER BY Count(problems.id) DESC;

这个想法是它将获取所有这些值（1,2,3等），然后执行子查询

（SELECT COUNT（problems.department）FROM Problems WHERE problems.status BETWEEN 1 AND 8 AND problems.department = CompanyID）

使用这些值中的每一个。这适用于MySQL，但我不确定如何让它在Access中工作。每次它询问我一个参数，那么当我这样做时，我只得到一个参数值的值。

Answer 1

我刚刚设法通过不使用别名来解决这个问题，而是使用表和字段名称，如此

SELECT Count(problems.id) AS Problems, 
departments.dname AS Company, 
departments.department_id AS CompanyID,
(SELECT COUNT(*) FROM problems WHERE problems.status BETWEEN 1 AND 8) AS totalopentickets, 
(SELECT COUNT(*) FROM problems WHERE status = 100) AS totalclosedtickets, 
(SELECT COUNT(problems.department) FROM problems WHERE problems.status = 100 AND problems.department = departments.department_id) AS departmentclosed, 
(SELECT COUNT(problems.department) FROM problems WHERE problems.status BETWEEN 1 AND  8 AND problems.department = departments.department_id) AS departmentopen
FROM problems 
INNER JOIN departments ON problems.department = departments.department_id
GROUP BY departments.dname, departments.department_id
ORDER BY Count(problems.id) DESC;

将参数传递给MS Access数据库中的子查询

1 个答案: