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Tags: MSS com strong ideas declare SQL Server pre implementation LANSummary:The following is a method of using SQL script to determine how the string is case-sharing, as shown belowLab environment: SQL Server R2Implementation idea
Not much to say, the explanation is followed by the complete code, which is used to spell the values of the rows of the string fields into a large string, which is what is commonly said Concatsuch as the following table Dict
Id
NAME
CATEGORY
1
RED
COLOR
2
BLUE
COLOR
3
APPLE
FRUIT
4
ORANGE
Recently found when comparing strings in SQL Server if the end of the string is a space then SQL Server ignores those spaces and compares them directly to the usual string judgment logic in the program.Declare @a nvarchar( -);Set
One, SQL Server date-time functionsDate and time functions in SQL Server1. Current system date, timeSelect GETDATE ()2. DateAdd returns a new datetime value based on adding a period of time to the specified dateExample: Add 2 days to the dateSelect DATEADD (day,2, ' 2004-10-15 ')--return: 2004-10-17 00:00:00.0003. DateDiff returns the number of date and time boun
byThe above ID is the way to implement row-to-column in Oracle. ********************************************Let's take a look at SQL Server, because SQL Server does not provide a similar function, do not know that sqlserver2012 is not available, but SQL
SQL Server connection string Encryption
Use components provided by ASP. NET
-Wordpress Encryption
-PDF decryption
{0} Name of the node to be encrypted
{1} project path
C: \ windows \ Micrsoft. Net \ framework \ versionnumber \ aspnet_regiis.exe-FFE "connectionstrings" "D: \ website2"
Note: Encryption can only be performed on the local machine through the l
In general, we will configure the relevant connection string in the web. config file, which is recorded here for future use.
1. Commonly Used
A: SQL Server Authentication connection stringView code
1 2 3 providername = "system. Data. sqlclient"> 4
B. Windows Authentication connection stringView code
1 2 3 providername = "system. Data. sqlclient"> 4
In additi
Tags: create function Fn_find (@find varchar (8000), @str varchar (8000), @n smallint) ret Urns int as BEGIN if @n SQL Server finds the location of the specified string
In general, C # Connections to SQL Server strings can be directly written directly in the documentation, or you can refer to the famous connectionstrings manual spellingBut if you are already connected to SQL Server you can also get the current connection string in T-
The SQL Server. NET Data Provider Connection string contains a collection of property name/value pairs. Each attribute/value pair is separated by a semicolon.propertyname1=value1; Propertyname2=value2; Propertyname3=value3;Similarly, the connection string must contain the SQL
Failed using IP to connect to SQL Server or configured as a connection string
Scenario One: when in Webconfig used in Files
Scenario Two:
Or, when connecting to SQL Server, enter IP as follows:
Hint that you cannot connect or connect incorrectly.
Solution :
Firs
An Excel table imports a string that is truncated to a length of 255 in the SQL Server data table.Note: Excel uses the data type of the first 8 rows (except for the first row of the header) to determine the data format of the imported data, for example, the first 8 lines are integer, then the data is imported by default in the form of integer data read, and for e
Transferred from: http://www.cnblogs.com/zhangq723/archive/2011/02/16/1956152.htmlOne, SQL Server date-time functionsDate and time functions in SQL Server1. Current system date, timeSelect GETDATE ()2. DateAdd returns a new datetime value based on adding a period of time to the specified dateExample: Add 2 days to the dateSelect DATEADD (day,2, ' 2004-10-15 ')--r
ASP. Net connection SQL server connection string, asp. netsqlserver
Reference namespace
1 using System.Data; 2 using System.Data.SqlClient;
Connection string
1 // windows Authentication mode the database contains a single instance. 2 string connectio
calculates the value of 0.
For example, count the number of students with scores
Select count (score) from SC
ØThe count (*) function is used to count the number of tuples. Duplicate rows are not eliminated. The distinct keyword is not allowed.
For example, calculate the total number of students in the computer department.
Selectcount (*) fromS where dept = 'put'
ØSTDev (expression) function ---- returns the standard deviation of all data in the expression. The expression is generally a numeric
,c.questionnairetitle fromnotices a Left JoinAwardorders b onA.awardorderid=b.ID andB.status=1
Left JoinQuestionnairesinfor C onA.questionnaireid=C.id andC.status=1
Left Join(SelectNoticeid,COUNT(1) asSumcount,noread=sum( Case [Status] when 1 Then 1 Else 0 End),Alread= sum( Case [Status] when 2 Then 1 Else 0 End) fromUsernoticesGroup byNoticeid) E onA.noticesid=E.noticeidwhereA.status=1 The notification is sent to the user notification table according to the ID
Label:Delete the table containing the specified stringCREATE PROCEDURE Sys_deletetablebytablename (@bianliang varchar (100))AsBeginDECLARE @biao varchar (+), @sql varchar (1000)Set @sql = '% ' [email protected]+ '% 'Declare c cursor for select name from sysobjects where type= ' u ' and name @sqlSet @sql = ' drop table 'Open CFetch C into @biaoWhile @ @fetch_statu
--╔══════════╗--=====================================║cast function conversion ║--╚══════════╝The CAST () function syntax is as follows:--CAST (/*"0", convert also provides a rich style for date conversion, cast only for normal date conversion"1", Data_type is the data type defined for the SQL Server system, and the user-defined data type cannot be used here.2, length specifies the length of the data, and t
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