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it168
13 年
MySQL技术内幕:时间和日期数据类型
【IT168 技术】MySQL数据库中有五种与日期和时间有关的数据类型,各种日期数据类型所占空间如表2-1所示。 DATETIME占用8字节,是占用空间最多的一种日期类型。它既显示了日期,同时也显示了时间。其可以表达的日期范围为“1000-01-01 00:00:00”到“9999-12-31 23 ...
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