MySQL Multiple Join Query with Limit on One Join - mysql

Question

I have a MYSQL query I'm working on that pulls data from multiple joins.
select students.studentID, students.firstName, students.lastName, userAccounts.userID, userstudentrelationship.userID, userstudentrelationship.studentID, userAccounts.getTexts, reports.pupID, contacts.pfirstName, contacts.plastName, reports.timestamp
from userstudentrelationship
join userAccounts on (userstudentrelationship.userID = userAccounts.userID)
join students on (userstudentrelationship.studentID = students.studentID)
join reports on (students.studentID = reports.studentID)
join contacts on (reports.pupID = contacts.pupID)
where userstudentrelationship.studentID = "10000005" AND userAccounts.getTexts = 1 ORDER BY reports.timestamp DESC LIMIT 1
I have a unique situation where I would like one of the joins (the reports join) to be limited to the latest result only for that table (order by reports.timestamp desc limit 1 is what I use), while not limiting the result quantities for the overall query.
By running the above query I get the data I would expect, but only one record when it should return several.
My question:
How can I modify this query to ensure that I receive all possible records available, while ensuring that only the latest record from the reports join used? I expect that each record will possibly contain different data from the other joins, but all records returned by this query will share the same report record

Answer 1

Provided I understand the issue; one could add a join to a set of data (aliased Z below) that has the max timestamp for each student; thereby limiting to one report record (most recent) for each student.
SELECT students.studentID
, students.firstName
, students.lastName
, userAccounts.userID
, userstudentrelationship.userID
, userstudentrelationship.studentID
, userAccounts.getTexts
, reports.pupID
, contacts.pfirstName
, contacts.plastName
, reports.timestamp
FROM userstudentrelationship
join userAccounts
on userstudentrelationship.userID = userAccounts.userID
join students
on userstudentrelationship.studentID = students.studentID
join reports
on students.studentID = reports.studentID
join contacts
on reports.pupID = contacts.pupID
join (SELECT max(timestamp) mts, studentID
FROM REPORTS
GROUP BY StudentID) Z
on reports.studentID = Z.studentID
and reports.timestamp = Z.mts
WHERE userstudentrelationship.studentID = "10000005"
AND userAccounts.getTexts = 1
ORDER BY reports.timestamp

Answer 2

for get all the records you should avoid limit 1 at the end of the query
for join anly one row from reports table you could use subquery as
select
students.studentID
, students.firstName
, students.lastName
, userAccounts.userID
, userstudentrelationship.userID
, userstudentrelationship.studentID
, userAccounts.getTexts
, t.pupID
, contacts.pfirstName
, contacts.plastName
, t.timestamp
from userstudentrelationship
join userAccounts on userstudentrelationship.userID = userAccounts.userID
join students on userstudentrelationship.studentID = students.studentID
join (
select * from reports
order by reports.timestamp limit 1
) t on students.studentID = t.studentID
join contacts on reports.pupID = contacts.pupID
where userstudentrelationship.studentID = "10000005"
AND userAccounts.getTexts = 1