SQL Server

Modify a Check constraint using the SSMS database management tool1, open the database, select Data table-Right click-"SELECT Design (or expand the constraints, select the constraints, right-click, select Modify, the following steps are the same).2.

modifying data columnsIn the development and production process, the spelling error of the column name or the change of the column name is required to manipulate the data table, in most cases it is not necessary to modify.There are several scenarios

Create a new stored procedureCreate PROCEDURE [dbo].[p_test] @type int asBEGIN Declare @count int if(@type =1) begin Select @count =(Select Count(*) fromdbo. Usergrowthdetail)Print @count return @count

Begin End The statement defines a block of SQL code that is typically used in the IF and while statementsDeclare @num int ;Set @num=0; while @numTenbegin 　　 Set @num=@num+1; Print 'Hello Word'End If Else Conditional Judgment

How to use the Java language to save a picture resource in a binary form in a databaseCreate a table in SQL ServerUse MYDB1GoCREATE TABLE Saveimg (ID varchar (primary key),IMG Image NOT NULL)Select *from saveimgUsing the Microsoft-provided

Original address: http://www.maomao365.com/?p=7307Summary:previously, when splitting a string, it was handled in a way similar to the Split function, and the following shared a way of separating a regular string.that is: 1. Use the Replace function

Newly installed a sqlserver2008 R2, in the establishment of the database when the error, the hint can not get the database "model" on the exclusive lock. The solution is as follows:Open the query page and execute the following statement.

The database was restarted on Sunday, just looking at the optimized results. By the way, look for new SQL statements to be optimized.Just found several similar statements, as shown belowSelect * From tablea where id not in (select ID from

From: http://www.cnblogs.com/Ammy/archive/2008/05/09/1190081.html 1) Use System Functions Select * From fn_dblog (null, null) 2) use DBCC DBCC log (dbname, 4) -- (n = 0, 1, 2, 3, 4) 1-more information plus flags, tags, row length 2-detailed

Common failures that SQL Server cannot start -- Has the operating system password been changed? -- Solve the problem that SQL cannot be started due to changing the operating system password: 1.My computer -- control panel -- Administrative

The four most common errors in SQL Server 2000 connection: 1. "SQL server does not exist or access is denied"This is the most complex. There are many causes of errors and there are many aspects to check.Generally, there are several possibilities:1.

-- 1. basic operations on a table: -- create a table book1create table book1 (number char (8) Not null, ibsn char (13) not null, name nvarchar (255), price money, press nvarchar (255), publication date datetime) Create Table book2 (number char (8)

1. Exact numeric type Bigint Int Smallint Tinyint Bit Money Smallmoney 2. Balanced Data Type, Ms is recommendedVarchar (max)Replace text Char Varchar Text 3. Approximate numeric type Decimal Numeric Real Float 4. Unicode string

When using SQL Server variables, the variable name is case-insensitive:     The current database is case-insensitive, but after declaring the variable, it is found that the variable name is case-sensitive. We always think that the collcation of

When I first came into contact with SQL Server, I thought that SQL Server would update statistics while changing data. In fact, SQL Server did not. based on performance considerations, SQL server uses the following algorithm to update

Question 1: A company printed a batch of rechargeable cards and the card password was randomly generated. Now this problem occurs:The "O and 0" (OH and 0) "I and 1" (AH and 1) in the card. The user reports cannot be clearly understood, and the

Someone asked me how to capture and record the deadlock information on the Forum. Here, I will share some of my experiences with you, and I would like to ask you to correct them. We know that you can useSQLThe profiler tool provided by the server is

SQL Server database is a common database software. It is a Microsoft product, but also supports JDBC operations. Operation: download the JDBC driver jar package from Microsoft's official website. Put its driver jar package under the classpath of

1. First install sqlserver2005 or another version. Taking sqlserver2005 as an example, the XP system only supports sqlserver2005 development edition and individual edition 2008. 2. Import the database file backed up by sqlserver to sqlserver2005.

Visual Studio. net Chinese Version beta 2 has been released for some time. Compared with the early version of Beta 1, the new version has undergone great changes in various aspects, including SQL Server programming, in Chinese beta 2, database