1、4个字节储存(Time stamp value is stored in 4 bytes) 2、值以UTC格式保存( it stores the number of milliseconds) 3、时区转化 ,存储时对当前的时区进行转换,检索时再转换回当前的时区。 datetime 1、8个字节储存(8 bytes storage) 2、实际格式储存(Just stores what you have stored and retrieves th...
datetime包含毫秒，要格式化输出，用fffDateTime t = DateTime.Now;Console.WriteLine(t.ToString("yyyy-MM-dd hh:mm:ss fff"));注：mysql里面的datetime类型的精确度是可以到1/ 10 ^ 6 秒的，某些客户端（如navicat for mysql）的显示经常只能看到精确到秒，其实是设计表的时候的配置问题。
TIMESTAMP 1.4个字节储存(Time stamp value is stored in 4 bytes) 2.值以UTC格式保存( it stores the number of milliseconds) 3.时区转化 ,存储时对当前的时区进行转换,检索时再转换回当前的时区。 datetime 1.8个字节储存(8 bytes storage) 2.实际格式储存(Just stores what you have stored and retrieves...
3. 最终解决方法从上面分析可知,我们现在遇到两个错误:1)mysql命令行抛出的: Error 'Unknown table engine 'InnoDB'' on query.2)mysql error日志输出:InnoDB: Error: log file /home/root/tools/mysql/var/ib_logfile0 is of different size 0 5242880 bytes从因果关系看,后者是出错的根本原因,因此,只需解决...
1.4个字节储存(Time stamp value is stored in 4 bytes) 2.值以UTC格式保存( it stores the number of milliseconds) 3.时区转化 ,存储时对当前的时区进行转换,检索时再转换回当前的时区。 datetime 1.8个字节储存(8 bytes storage) 2.实际格式储存(Just stores what you have stored and retrieves the same...
mysql中DATETIME、DATE和TIMESTAMP的区别 DATETIME、DATE和TIMESTAMP类型是相似的。本篇描述了它们的特性以及它们的相似点与不同点。DATETIME类型可⽤于需要同时包含⽇期和时间信息的值。MySQL 以'YYYY-MM-DD HH:MM:SS'格式检索与显⽰DATETIME类型。⽀持的范围是'1000-01-01 00:00:00'到'9999-12-31 23:...
1，TIMESTAMP ①4个字节储存（Time stamp value is stored in 4 bytes）②值以UTC格式保存（ it stores the number of milliseconds）③时区转化 ，存储时对当前的时区进行转换，检索时再转换回当前的时区。2，datetime ①8个字节储存（8 bytes storage）②实际格式储存（Just stores what you have ...
NOT CLUSTER PRIMARY KEY("TAB_NAME", "STAT_TIME")) STORAGE(ON "MAIN", CLUSTERBTR) ;SELECT * FROM TABLESPACE; 模拟数据 INSERT INTO SYSDBA.TABLESPACE (TABLE_NAME,USED,FERR, TOTAL ,PER_FREE,TJDATE) SELECT TABLE_NAME , USED + 200 as USED, ...
DATETIME takes 8 bytes of storage. INT takes 4 TIMESTAMP takes 4 DATE takes 3 DATETIME and TIMESTAMP have lots of useful functions. TIMESTAMP is stored as GMT and TZ-converted on input/output. DATETIME -- think of it as a snapshot of the clock on the wall (no timezone, daylight sav...
DATETIME takes 8 bytes of storage. INT takes 4 TIMESTAMP takes 4 DATE takes 3 DATETIME and TIMESTAMP have lots of useful functions. TIMESTAMP is stored as GMT and TZ-converted on input/output. DATETIME -- think of it as a snapshot of the clock on the wall (no timezone, ...