Tags: style color ar sp on line size SQL harA very powerful date formatting function in SQL ServerSelect CONVERT (varchar), GETDATE (), 0): 2006 10:57amSelect CONVERT (varchar), GETDATE (), 1): 05/16/06Select CONVERT (varchar), GETDATE (), 2): 06.05.16Select CONVERT (varchar
server|sqlserver| function SQL Server commonly used time functions---GETDATE, getutcdate, datename SQL Server commonly used time functions---GETDATE, getutcdate, Datename Author: Amoy Net Date: 2005-4-12 15:53:24 Visits: Origin: Amoy-Net--http://www.tot.name display options: Automatic scrolling [left button stop]
When GETDATE () is invoked in a custom function in a SQL 2000 database, the result compiles the times incorrectly, prompting errors as follows: Invalid use of ' getdate ' within a function
I'll give you a test example as shown below,
--================================================================================================
--Author : Kerry
--createdate
Tags: c time ar sql har serverA very powerful date formatting function in SQL ServerSelect CONVERT (varchar), GETDATE (), 0): 2006 10:57amSelect CONVERT (varchar), GETDATE (), 1): 05/16/06Select CONVERT (varchar), GETDATE (), 2): 06.05.16Select CONVERT (varchar),
When the default value getdate () is set, the new data is still null. This problem does not occur when you use the SQL statement insert, but the problem occurs when you use the LINQ to SQL statement.
Solution: http://msdn.microsoft.com/zh-cn/library/system.data.linq.mapping.columnattribute.isdbgenerated.aspx
[Column (storage = " _ Orderid " , Autosync = auto
SQL Server Date datename getdate function
GetDate () Function instance
You can call the use of the GETDATE () function in SQL Server 2005 's user customization function (udfs:user Defined functions), which is an example of the following example:
--Create a UDF now ()
C
One, local time and UTC timelocal timeEach region of the world has its own local time, the entire earth is divided into 24 time zones, each time zone has its own local time.UTC timeIn international radio communications, a standard time is commonly used for unification, known as universal Coordination (UTC, Universal times coordinated). UTC time is the same as the local time in London, UK.UTC time is the same in all parts of the world, but in different time zones, local time varies. In
Date formatting statement and SQL Server statement during SQL Server Query
The default datetime format of the Chinese version of SQL Server isyyyy-mm-dd Thh:mm:ss.mmm
For example:
select getdate() 2004-09-12 11:06:08.177
I sorted out the date format conversion methods tha
) Select DATEADD (Wk,datediff (Wk,0,getdate ()), 0) query yesterday Date: Select CONVERT (Char,dateadd (dd,-1,getdate)), 111 //111 is the style number, (100-114) query the first day of the month Date: Select DATEADD (mm, DATEDIFF (Mm,0,getdate ()), 0) as FirstDay
Label:Objective
On a relational database commonly used SQL statement syntax is mainly relational database general structure, this paper discusses the relational database query SQL syntax.
Grammar Review
SELECT [ALL|DISTINCT]
The order of SQL
SQL -- Process Multi-condition query and SQL page query on the page
Two methods are used to process multi-condition queries in the past. The first method is to determine the fields to be filled in the condition, and then determine whether the input parameter is null. If it is null, use 1 = 1 to replace this condition
query, result is a flute Descartes product
Select S.id, S.name, C.id, c.name from student s cross join classes C
--where s.cid = c.id;
6, from the connection (the same table to connect query)
--Self-connected
Select distinct s.* from student s, student S1 where S.id Ø function
1. Aggregate function
Max Max, min minimum, count statistic, avg mean, sum sum, var variance
Select
Max (age) Max_age,
Min (age) Mi
c on s. cid = c. id;
3. right join
-- Right join
Select s. id, s. name, c. id, c. name from student s right join classes c on s. cid = c. id;
4. inner join
-- Internal Connection
Select s. id, s. name, c. id, c. name from student s inner join classes c on s. cid = c. id;
-- Inner can be omitted
Select s. id, s. name, c. id, c. name from student s join classes c on s. cid = c. id;
5. cross join
-- Cross join query. The result is the product of a flute
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