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根据最大日期筛选结果
原标题:Filtering of result according to maximum date
  • 时间:2012-05-27 15:49:26
  •  标签:
  • php
  • mysql
  • sql

以下是我的sql查询,我试图根据日期(大于)差异过滤结果。SQL函数“Date(FROM_UNIXTIME(i_lat_updated))”成功返回日期,但以下查询没有根据where子句检查过滤结果。请告诉我我的sql查询是否有问题,我该如何更正。非常感谢。

注意:“我使用简单的if/else成功地做到了这一点,但我想知道是否有任何可能的方法使用sql查询来做到这一点”

$d= "2012-12-25"

$sql2 = "SELECT attendees FROM event_attendees where Date(FROM_UNIXTIME(i_last_updated)) > $d";
最佳回答

您错过了日期变量周围的

$sql2 = "SELECT attendees FROM event_attendees where Date(FROM_UNIXTIME(i_last_updated)) >  $d ";
问题回答

查找MySQLdatediff函数,该函数将允许您将FROM_UNIXTIME()$d。测试结果的符号。

您可以使用MySQLDATEDIFF函数用于查找两个日期之间的差异。

然而,在我看来,与其为每一行转换i_lat_updated,不如将$d转换为unix时间戳。您可以使用MySQL来实现这一点UNIX_timestamp函数。





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