NEVER EVER use a selector like DATE(datecolumns) = '2012-12-24' - it is a performance killer: it will calculate DATE() for all rows, ... ... <看更多>

Any column that MySQL can treat blindly as a string (or blob) may as ... It is easy to split a DATETIME into its parts; it is hard to go the ... ... <看更多>

DateTime is not bind/extract correctly from MySQL database. Milisecond and microseconds are corrupted. Binding Miliseconds are bind by this ... ... <看更多>

MySQL 中有多种数据类型可以用于日期和时间的表示：. 常用的是如下三种： （1）DATE：表示年月日（2）DATETIME：表示年月日时分秒（3）TIME：只需要 ... ... <看更多>

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