SQL Server

When SQL Server 2008 was not able to log in before, it was always changed by "Computer Management" → "SQL Server service", "SQL Server (MSSQLSERVER)". But now the problem has become the SQL Server service cannot open the situation, it is

Querying a stored procedure for SQL Server database deadlockThe use of SQL Server as a database application system will not be able to avoid the occasional deadlock. After the deadlock appears,Most maintenance personnel or developers will only use

1. Create with Try ... Stored procedure templates for catch　　Copy the following code, and then create a new query, you can write the SQL statement, after execution, a your own stored procedures are established! Use [DB]--set the corresponding

Often there is a requirement that when a field has a lot of duplicate values, but the values in the B field are unique after grouping by a field, so select a, B fields do not know which value in the B field, so when the A field repeats, you want to

--determine if the database existsif exists(Select * fromsys.databaseswhereName= 'Database name')Drop Database [Database name]--determine if a table existsif exists(Select * fromsysobjectswhereId= object_id(N'[table name]') and ObjectProperty(ID,

How many tables are in SQL Server query database SELECT * from sysobjects WHERE (xtype = ' U ')C = CHECK constraintD = defaults or Default constraintsF = FOREIGN KEY constraintL = LogFN = Scalar functionIF = inline table functionP = stored

Reproduced:SQL Server index structure and its use (i)FreedkFirst, understand the index structure in a comprehensible senseIn fact, you can interpret an index as a special kind of directory. Microsoft's SQL Server provides two types of indexes:

--Trace file read in to table Analysis select * into Zgsjyfrom fn_trace_gettable (' E:\wxxcdbprofiler.trc ', default);--time, sqlselect top 100 SUBSTRING (textdata,1,660) as ' name ', COUNT (*) as ' quantity ', sum (duration/1000) as ' total run

1)InProc--this way the session state is stored in the ASP. NET run process, in the location of the cache (cache) of ASP. 2)StateServer--this way the session state is saved in the Wiindows service process with ASP. The service is disabled by default

1. Get all database names: SELECT name fromMaster.. sysdatabases ORDER by Name2. Get all table names: SELECT name fromDatabaseName. SysObjects Where xtype='U'ORDER by Namextype='U': represents all user tables; XType='S': represents all system tables;

Regardless of the database, if you want to optimize the performance of the database, you must understand the storage structure inside the database. Otherwise, a lot of database optimization work can not be expanded. For the database administrator,

First, the basic concept of indexed viewsAn indexed view is actually a view that "materialized" a set of unique values into a clustered index, which is materialized almost as a table, and its data is stored in one copy (it consumes hard disk space,

In SQL Server 2000, assume that we have a database of: Test, which now requires it to be automatically backed up 19:00 every day, and in the event of a database error in the future, we can restore the database to any backup point in time with a

1#include 2#include 3#include 4#include 5#include 6 7 8 intMainintargcChar*argv[])9 {Ten One //method One: Establish a connection through DSN. The DSN is the data source name. A //The following example is on the Dbhomework database on

With SharePoint for a long time, it is assumed that SQL requires only the most initial configuration, that is, management and maintenance is no longer required, and in fact, the management and security of SQL is closely related to the stability of

Cursor Is a database query stored on the DBMS server. It is not a SELECT statement, but a result set retrieved by this statement. After the cursor is stored, the application can scroll or browse the data as needed. Use cursor To use a cursor: Before

Solution:There are several methods to deal with this situation:1. Buy third-party software (usually few people buy it)2. I have to program a small software for execution, but this logic requirement is high and the programming capability must be at a

When I installed SQL Server 2000 on a win2003 machine, a window popped up asking me to enter the serial number... The SQL statement has already integrated the serial number. The default value is M4FMF-7FBWJ-QW39C-4HDXR-MWHMD When you click "OK",

Data is explosive growth in the Internet era. We often need to store structured data and unstructured data (such as documents, presentations, videos, audios, and images) together. There are usually several solutions:1. Store structured data in the

SQL server determines whether a database, table, column, or view exists. SQL server 1. Determine whether the database exists If exists (select * from sys. databases where name = 'database name ')Drop database [database name] 2. Check whether the