如何在SQL中将字符串转换为日期类型?我有一个名为timestamp (类型varchar)的列,其中包含以下数据:06.07.2021 00:00:0004.07.202100:00:00select timestamp from table where
convert(datetime,timestamp,112) = convert(<em
我的表中有DATETIME列,2015-04-23 11:17:49属性试图将其转换为unix时间戳,根据mysql文档,我只需将该字段放入UNIX_TIMESTAMP()函数中,我将获得-> 1223423442- timestamp,但它不起作用,我已经尝试了很多东西:UNIX_TIMESTAMP(CAST(`updated` AS CHAR(100))) AS updated_at,
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