[英]How to convert data type varchar to timestamp mysql?
我有數據庫mysql,表'tblevel',列'waktu',varchar數據類型。 並且列保持這樣的值:
30-01-2014 12:19:09
該值將轉換為時間戳,因為我必須這樣做才能在圖形中查看數據,在這種情況下我使用谷歌數據可視化,
短代碼是:
$result = mysql_query("SELECT TIMESTAMPDIFF(MINUTE,FROM_UNIX_TIMESTAMP(STR_TO_DATE(waktu, '%H:%i:%s %b %d, %Y')), now()) as waktu1,level,press FROM tblevel WHERE TIMESTAMPDIFF(MINUTE,FROM_UNIXTIME(waktu) , now()) < 120 Order By waktu");
希望有人幫助糾正代碼。謝謝
關於Fixduino。
嘗試這個:
SELECT a.waktu, a.level, a.press
TIMESTAMPDIFF(MINUTE, STR_TO_DATE(a.waktu, '%d-%m-%Y %H:%i:%s'), NOW()) AS waktu1
FROM tblevel a
WHERE TIMESTAMPDIFF(MINUTE, STR_TO_DATE(a.waktu, '%d-%m-%Y %H:%i:%s'), NOW()) < 120
ORDER BY STR_TO_DATE(a.waktu, '%d-%m-%Y %H:%i:%s');
MySQL的日期格式是YMD,試試這個
SELECT a.waktu, a.level, a.press
TIMESTAMPDIFF(MINUTE, STR_TO_DATE(a.waktu, '%y-%M-%d %H:%i:%s'), NOW()) AS waktu1
FROM tblevel a
WHERE TIMESTAMPDIFF(MINUTE, STR_TO_DATE(a.waktu, '%y-%M-%d %H:%i:%s'), NOW()) < 120
ORDER BY STR_TO_DATE(a.waktu, '%y-%M-%d %H:%i:%s');
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