(1) date类型: 只用来存储日期. 是sql server2008新引进的数据类型, 存储格式:“YYYY-MM-DD” 占用空间:占用三个字节 数据可存储范围:0001-01-01~9999-12-31 (2) time类型 :只用来存储时间 存储格式:“hh:mm:ss” 占用空间:3~5个字节 数据可存储范围:00:00:00:0000000(7个0)~23:59:59.9999 999(...
When converting from SQL Server dates to Unix timestamps, the dates are rounded to the nearest second (Unix timestamps are only accurate to the nearest second) SQL Server date to UNIX timestamp (based on seconds since standard epoch of 1/1/1970) */ SELECTDATEDIFF(second,'1/1/1970',GET...
date是一个可以解析为 time、date、smalldatetime、datetime、datetime2 或 datetimeoffset 值的表达式。date 参数可以是表达式、列表达式、用户定义变量或字符串文字。 获取月份:MONTH(date),返回日期对应的月份,返回int类型。参数同上。 获取天数:DAY(date),返回日期对应的天数,返回int类型。参数同上 获取任意时间部分,DA...
SQL Server supports the following date and time types.In this sectiondate datetime datetime2 datetimeoffset smalldatetime timeRelated contentDate and time data types and functions (Transact-SQL) AT TIME ZONE (Transact-SQL) CAST and CONVERT (Transact-SQL)...
Functions that return system date and time values Transact-SQL derives all system date and time values from the operating system of the computer on which the instance of SQL Server runs. Higher-precision system date and time functions Since SQL Server 2008 (10.0.x), the Database Engine ...
Functions that return system date and time values Transact-SQL derives all system date and time values from the operating system of the computer on which the instance of SQL Server runs. Higher-precision system date and time functions Since SQL Server 2008 (10.0.x), the Database Engine derives...
CURRENT_TIMESTAMPCURRENT_TIMESTAMP返回包含计算机的日期和时间的 datetime 值,SQL Server 的实例在该计算机上运行。 返回值不包括时区偏移量。datetime不具有确定性 GETDATEGETDATE ( )返回包含计算机的日期和时间的 datetime 值,SQL Server 的实例在该计算机上运行。 返回值不包括时区偏移量。datetime不具有确定性 ...
现在,您已经了解了SQL Server中DateTime数据类型的精度,可以根据自己的需求选择合适的日期和时间类型来存储时间信息。 DateTime Table1Table21 to many 参考资料: [Microsoft Docs: Date and Time Data Types and Functions](
SQL Server 2008 supports three main datetime data types: datetime: This data type stores date and time values with a precision of up to 3.33 milliseconds. The valid range is January 1, 1753, to December 31, 9999. smalldatetime: This data type stores date and time values with a precision ...
MySQL Data Types (Version 8.0) In MySQL there are three main data types: string, numeric, and date and time. String Data Types Data typeDescription CHAR(size)A FIXED length string (can contain letters, numbers, and special characters). Thesizeparameter specifies the column length in characters...