SELECTFORMAT( GETDATE(),'dd','en-US')ASResult; SELECTFORMAT( GETDATE(),'MM/dd/yyyy','en-US')ASResult; DATEFROMPARTS# 将数值拼接为字符串 实例: SELECTDATEFROMPARTS(2012,3,10)ASRESULT; SELECTTIMEFROMPARTS(12,10,32,0,0)AS
This topic provides reference information about date and time functions in PostgreSQL compared to Microsoft SQL Server, which is valuable for database administrators and developers migrating from SQL Server to Amazon Aurora PostgreSQL. You can understand the differences in ...
TOP选项是一个专有的T-SQL功能,用于限制查询返回的行数或行的百分比。 SELECT TOP (1) PERCENT orderid, orderdate, custid, empid FROM Sales.Orders ORDER BY orderdate DESC; 2 OFFSET-FETCH筛选 TOP选项不是标准SQL,且不支持跳过功能,OFFSET-FETCH是标准SQL,SQL Server2012时引入。 SELECT orderid, orderd...
DATEPART() 函数,返回指定日期和时间值的指定datepart 的整数。语法(Syntax): DATEPART(datepart,date)。第一个参数可以参考
T-SQL DATEPART() Functions DATEPART()函数,返回指定日期和时间值的指定datepart的整数。 语法(Syntax): DATEPART(datepart,date)。 第一个参数可以参考下表;而第二个参数传入(日期或时间)值的一部分。 datepart 演示: SELECTDATEPART(quarter,CURRENT_TIMESTAMP)AS[今年第几季度]...
TIMEFROMPARTSTIMEFROMPARTS ( hour, minute, seconds, fractions, precision )对指定的时间返回 time 值(具有指定精度)。time( precision )Deterministic 返回日期和时间差异值的函数 展开表 函数语法返回值返回数据类型确定性 DATEDIFFDATEDIFF ( datepart, startdate, enddate )返回两个指定日期之间所跨的日期或时间 ...
Moreover, T-SQL includes string operations and date and time processing. This popular and widely used database language is mainly used in and ultimately makes creating, modifying, and retrieving data more efficient. Deterministic Vs. Non-Deterministic Functions Transact-SQL functions can be ...
SELECT SYSDATETIME() AS [SYSDATETIME()] ,SYSDATETIMEOFFSET() AS [SYSDATETIMEOFFSET()] ,SYSUTCDATETIME() AS [SYSUTCDATETIME()] ,CURRENT_TIMESTAMP AS [CURRENT_TIMESTAMP] ,GETDATE() AS [GETDATE()] ,GETUTCDATE() AS [GETUTCDATE()]; 結果集如下所示。 複製 SYSDATETIME() 2007-04-30 ...
TIMEFROMPARTSTIMEFROMPARTS ( hour, minute, seconds, fractions, precision )对指定的时间返回 time 值(具有指定精度)。time( precision )Deterministic 返回日期和时间差异值的函数 展开表 函数语法返回值返回数据类型确定性 DATEDIFFDATEDIFF ( datepart, startdate, endda...
Useful functions in a SELECT statementFor information about some functions that you can use to work with data in SELECT statements, see the following articles:String Functions (Transact-SQL) Date and Time Data Types and Functions (Transact-SQL)...