1
比方說,有這樣的事:如何快速創建使用Zend_Db的複雜選擇查詢?
SELECT energy_produced, energy_consumed, timestamp1 AS timestamp FROM (
SELECT max(energy_produced) AS energy_produced, mid(timestamp, 1, 10) AS timestamp1 FROM tbl_energy
WHERE site_id = 1366 AND mid(timestamp, 1, 10) >= DATE_SUB(curdate(),INTERVAL 1 day)
group by mid(timestamp1, 1, 10)) AS e1
INNER JOIN (
SELECT max(energy_consumed) AS energy_consumed, mid(timestamp, 1, 10) AS timestamp2 FROM tbl_energy
WHERE site_id = 1366 AND mid(timestamp, 1, 10) >= DATE_SUB(curdate(),INTERVAL 1 day)
group by mid(timestamp2, 1, 10)) AS e2
ON e1.timestamp1 = e2.timestamp2
我可以只是把這些東西它在一個變量,並呼籲像$ DB->使用fetchall吸盤($選擇) - >指定者?
工作就像一個魅力。非常感謝Bill! – Stuart 2008-12-13 02:15:40