Microsoft SQL Server hasmoneyandsmallmoneydata types but since it’s not supported by other popular database vendors, it’s not listed here. 此处列出的数据类型并不包括
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在数据存储划分中属于RDBMS系统,对外可以提供强一致性数据查询接口。例如,在一次同步任务启动运行过程中,当该库存在其他数据写入方写入数据时,由于数据库本身的快照特性,SQL Server Reader完全不会获取到写入的更新数据。 上述是在SQL Server Reader单线程模型下数据同步一致性的特性,SQL Server Reader可以根据...
The base type can be any scalar or user-defined PL/SQL data type specifier such asCHAR,DATE, orRECORD(including a previously defined user-defined subtype). Note: The information in this topic applies to both user-defined subtypes and the predefined subtypes listed inPL/SQL Predefined Data Typ...
DATETIME2can store date fromJanuary 1, 0001toDecember 31, 9999with time DATEcan only store date fromJanuary 1, 0001toDecember 31, 9999 TIMEcan store only time Note:There are many other data types supported by SQL Server. To read more, visitSQL Server documentation. ...
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 ...
MS SQL Server Data Types String Data Types Data typeDescriptionMax char lengthStorage char(n)Fixed-length non-Unicode character data (n must be between 1 and 8000)8,000n bytes (uses one byte for each character) varchar(n)Variable-length non-Unicode character data (n must be between 1 and...
定义SQL Server 中的日期。 SQL Server 2008 (10.0.x) 中引入了date数据类型。 date 说明 properties值 语法DATE 使用情况DECLARE @MyDate DATE CREATE TABLE Table1 (Column1 DATE) 默认的字符串文字格式 (用于下级客户端)yyyy-MM-dd 有关详细信息,请参阅下级客户端的后向兼容性部分。
SELECTCAST(YEAR(GETDATE())AS VARCHAR) --hour (00-23) SELECTDATEPART(hour,GETDATE()) --Hour (01-12) SELECTLEFT(RIGHT(CONVERT(CHAR(19),GETDATE(),100),7),2) --minute SELECTDATEPART(minute,GETDATE()) --second SELECTDATEPART(second,GETDATE()) ...
Incorporating Unicode into client-server or multi-tiered applications and websites offers significant cost savings over the use of legacy character sets. Unicode enables a single software product or a single website to be targeted across multiple platforms, languages and countries without re-engineering...