sql server format function

the current value of the set Datefirst parameter, expressed as the first day of the week specified SELECT @ @DBTS --returns the value of the current timestamp data type for the current database. This timestamp is guaranteed to be unique in the database * SELECT @ @LANGID --returns the local speech identifier for the current action language SELECT @ @LANGUAGE --returns the name of the currently used language * SELECT @ @LOCK_TIMEOUT --returns the current lock timeout setting (in millisecon

): 2006-05-16 10:57:47Select CONVERT (varchar), GETDATE (), 21): 2006-05-16 10:57:47.157Select CONVERT (varchar), GETDATE (): 05/16/06 10:57:47 AMSelect CONVERT (varchar), GETDATE (), 23): 2006-05-16Select CONVERT (varchar), GETDATE (), 24): 10:57:47Select CONVERT (varchar), GETDATE (), 25): 2006-05-16 10:57:47.250Select CONVERT (varchar), GETDATE (), (+): 2006 10:57amSelect CONVERT (varchar), GETDATE (), 101): 05/16/2006Select CONVERT (varchar), GETDATE (), 102): 2006.05.16Select CONVERT (varch

Measure_heat Show Results: The results are rather ugly and clear, we can use the graphical visualization of the way to view, the display is more intuitive. 4. There are also set functions related to performance analysis, such as SET STATISTICS XML --XML format output query plan SETSTATISTICS profile on -- Each query that executes returns its regular result set For example, when profile is set to ON, the result is much like set SHOWPLAN_ALL on, w

Tags: not function return value TMP share returns. com ABC tinSummary:The following is a function that Isnumber validates an integer to make a numerical judgment in a SQL script, as follows: 例: 实现原理:判断 是否包含特殊字符，是否全部为0-9的自然数组成 CREATE FUNCTION dbo.check_number ( /*验证一字符串类型是否为整型数值类型*/ @checkTmp VARCHAR(100) ) RETURNS

-- SQL Regular Expression replacement function The Code is as follows:CREATE function dbo. regexReplace(@ Source ntext, -- original string@ Regexp varchar (1000), -- Regular Expression@ Replace varchar (1000), -- replace value@ GlobalReplace bit = 1, -- whether it is a global replacement@ IgnoreCase bit = 0 -- ignore case sensitivity)ReturnS varchar (1000)BeginDe

As the data grows, the database grows, and the disk space increases and the performance decreases. The data compression function of SQL Server 2008 can greatly reduce the data volume and improve query performance, especially for data warehouses. (Bestpractices for data warehousing with SQL

There are four ranking functions in SQL Server, namely:1, Row_number ()2, Ntile ()3. Rank ()4, Dense_rank ()-------------------------------------------------------------------------To facilitate demonstration, we first set up related tablesCREATE TABLE T (ID int, Name varchar (32));GoInsert into T (id,name) VALUES (1, ' a '), (2, ' a '), (3, ' B '), (4, ' C '), (5, ' C '), (6, ' D ');Go1.Row_number ();Selec

Environment: SQL Server 2008 R2 Problem: The update or insert of the view or function ' XXX ' failed because it contains a derived domain or a constant field to resolve To create a view command: Create View D_s_g (Sno,avg_grade) as select Sno,avg (grade) from SC Group by Sno; Reason: Views view does not allow modification. Workaround: Recreate a table

server|sqlserver| function A function similar to split was written in SQL Server this morning, as required by query statistics, as follows Create function F_split (@SourceSql varchar (8000), @StrSeprate varchar) returns @temp ta

syscolumns A,syscolumns bGO--string spin-off processing functionCREATE FUNCTION F_splitstr (@s varchar (8000),--string to be split@split varchar (10)--Data delimiter) RETURNS TABLEAsRETURN (SELECT Col=cast (SUBSTRING (@s,id,charindex (@split, @[email protected],id)-id) as varchar (100))From Tb_splitstrWHERE Idand CHARINDEX (@split, @[email protected],id) =id)GO --Method 4: Use SQL server2005 outer APPLY C

The SQL Server2005 database comes with a sort function row_number (),The list is:Syntax: Row_number (): Over (clause)1. Use the Row_number () function to number:Select Row_number () over (order by Sage) ID, * from StudentPrinciple: Sort by sage first, and then number each piece of data.Note: When using the over window functio