使用TRANSFORM和PIVOT的交叉表查询正在重复行

Question

The query below will be used to retrieve results in my database which will then be inserted into a jtable.

TRANSFORM ABS(a.present)
SELECT e.ID, e.firstName, e.lastName, e.position, e.rate 
FROM employees e LEFT JOIN attendance a ON e.ID = a.empID
GROUP BY e.ID, e.firstName, e.lastName, e.position, e.rate, a.present 
PIVOT a.dateAttended

The results that were retrieved by the query can be seen below.

Now, what I would like to do is to merged some results. The problem in my query arises when the result from the date columns differ, (eg 1 | 0, or 0 | 1). The ID result is being duplicated (encircled in red). I just want to ask some possible ways on how i can merged the results as seen in the right part of the image. Thank you in advance.

Answer 1

Your problem is that you want to TRANSFORM (ie, report the value of) a.present but you have also included that field the GROUP BY clause. Try using TRANSFORM First(Abs(a.present)) and removing a.present from the GROUP BY clause, ie,

TRANSFORM First(Abs(a.present))
SELECT e.ID, e.firstName, e.lastName, e.position, e.rate 
FROM employees e LEFT JOIN attendance a ON e.ID = a.empID
GROUP BY e.ID, e.firstName, e.lastName, e.position, e.rate
PIVOT a.dateAttended