我正在嘗試返回記錄編號的歷史位置

我所擁有的是：

SELECT l.location, t.transaction_id, t.date_modified

FROM transactions as t

INNER JOIN (

SELECT

t1.received_id, t1.transaction_id, t1.date_modified

FROM (

SELECT received_id, MAX(date_modified) as maxmodify

FROM transactions

GROUP BY received_id) as max_record

JOIN transactions as t1

ON (t1.received_id =max_record.received_id)

) as whatever

INNER JOIN locations as l

ON l.location_id = t.location_id

INNER JOIN received as r

ON r.received_id = t.received_id

WHERE t.received_id='1782'

ORDER BY t.date_modified DESC

解析大約需要1分鐘，并返回如下數據：

T-E1A 67294 2013-05-29 14:05:30

T-E1A 67293 2013-05-29 14:05:30

T-E1A 67294 2013-05-29 14:05:30

T-E1A 67293 2013-05-29 14:05:30

T-E1A 67294 2013-05-29 14:05:30

T-E1A 67293 2013-05-29 14:05:30

T-E1A 67294 2013-05-29 14:05:30

我真正希望看到的是像這樣的查詢中的數據：

SELECT l.location, t.transaction_id, t.date_modified FROM transactions as t

JOIN locations as l

ON l.location_id = t.location_id

JOIN received as r

ON r.received_id = t.received_id

WHERE t.received_id='1782'

ORDER BY t.date_modified DESC

哪個返回

T-E1A 67290 2013-05-29 13:58:26

T-E1A 67289 2013-05-29 13:58:26

ADJUST 67283 2013-04-26 11:33:54

ADJUST 67284 2013-04-26 11:33:54

ST10 67279 2013-04-26 09:52:41

ST10 67278 2013-04-26 09:52:13

ST10 67277 2013-04-26 09:50:58

ST10 67276 2013-04-26 09:50:20

SH3 67274 2013-04-26 09:49:39

第二個查詢更好，但我真的只想顯示每個記錄ID和位置的最后修改時間。

有人可以看到我在做什么嗎？感謝您的幫助。

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