В SQL Server 2005+
:
SELECT *
FROM job j
OUTER APPLY
(
SELECT TOP 1 *
FROM jobstatus js
WHERE js.jobid = j.jobid
ORDER BY
js.date DESC
) js
В SQL Server 2000
:
SELECT *
FROM job j
LEFT JOIN
jobstatus js
ON js.id =
(
SELECT TOP 1 id
FROM jobstatus jsi
WHERE jsi.jobid = j.jobid
ORDER BY
jsi.date DESC
)
Тези заявки обработват възможни дубликати на Date
правилно.