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mysql 日期_MySQL

May 31, 2016 am 08:46 AM

 

MySql的时间类型有          Java中与之对应的时间类型
date                                           java.sql.Date

Datetime                                    java.sql.Timestamp

Timestamp                                java.sql.Timestamp

Time                                          java.sql.Time

Year                                           java.sql.Date

 

mysql 日期类型

 

·  DATE (适用于“出生日期”等只需要年月日数据的日期字段)

日期。支持的范围为'1000-01-01'到'9999-12-31'。MySQL以'YYYY-MM-DD'格式显示DATE值,但允许使用字符串或数字为DATE列分配值。

·         DATETIME (适用于添加的记录需要精确到秒的日期字段,如公交发车,抵达时刻字段)

日期和时间的组合。支持的范围是'1000-01-01 00:00:00'到'9999-12-31 23:59:59'。MySQL以'YYYY-MM-DD HH:MM:SS'格式显示DATETIME值,但允许使用字符串或数字为DATETIME列分配值。

·         TIMESTAMP[(M)] (时 间戳类型,用于自动记录当前数据的增加修改时间,例如表字段的addDate字段,记录添加时间,我们就可以使用该类型使数据库自动帮我们插入系统当前时 间。而且需要数据库提供使用当前系统时间作为默认值的支持只有TIMESTAMP该类型,其他日期类型不支持。缺陷该字段支持到2037年)

时间戳。范围是'1970-01-01 00:00:00'到2037年。

TIMESTAMP列用于INSERT或UPDATE操作时记录日期和时间。如果你不分配一个值,表中的第一个TIMESTAMP列自动设置为最近操作的日期和时间。也可以通过分配一个NULL值,将TIMESTAMP列设置为当前的日期和时间。

TIMESTAMP值返回后显示为'YYYY-MM-DD HH:MM:SS'格式的字符串,显示宽度固定为19个字符。如果想要获得数字值,应在TIMESTAMP 列添加+0。

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