SQL Server

To connect to a SQL Server database using the Ado.net custom class MyDBase Using System; Using System.Data; Using System.Data.SqlClient; public class MyDBase { BOOL Ecode=false; String ES; SqlConnection cn=new

No database system can avoid a crash situation, even if you use clustered, dual-machine hot standby and so on, still can not completely eliminate the single point of failure in the system, not to mention for the majority of users, cannot afford such

How to determine the maximum value in the SQL Server bar CREATE TABLE [dbo]. [Minmax] ( [Minmaxid] [INT] IDENTITY (1,1) not NULL, [Value1] [INT] Null [Value2] [INT] Null [Value3] [INT] Null [Value4] [INT] Null CONSTRAINT [Pk_minmax]primary

Editor: Like our server to use tools to the log 1M programming, not too troublesome to see the manual method: 1: Delete Log 1: Detach Database Enterprise Manager-> Server-> database-> right key-> Detach database 2: Delete log file 3: Additional

1, tools, point me to download attachments.2, Install SQL Prompt 5.3.4.13. Activate Open SQL Server R2 on the toolbar click SQL Prompt 54. Open the Sql.prompt.keygen.5.3.exe and copy the serial number to the window just now.5, then click Activate,

SELECT Index name =a.name, table name =c.name, indexed field name =d.name, indexed field location =d.colid? 12345678 FROMsysindexes  a JOINsysindexkeys  b  ONa.id=b.id  ANDa.indid=b.indid JOINsysobjects  c  ONb.id=c.id

Talk about composite indexesWrite index blog Too much, has not wanted to write, there are two reasons:One is the suspicion that there are fried leftovers, brothers have said: Index, as long as the query criteria to build the index on the line,

SQL Server imports data at high speed, such as the following methods: CTE, Openrowset/opendatasource, BULK INSERT, bcp, Shell.These methods are described in turn. 1.CTEFirst of all. Let's see what a CTE is.A common table expression (Common table

Problem point:1, in order to SQL Server and MySQL security, it is recommended to run low database permissions. Disable remote access to ports 1433 and 3306, and so on.2. The installation process prompts Windows Firewall warning: Turn off the

Just loaded SSMS 17.1 preparation experience, pop up:A search, the general approach is to install VS2015 stand-alone shell, delete a registry key what, useless, first this shell I was loaded, and then there is no that registry key. I try to overload

Yesterday examined a very inefficient table, two years without maintenance, logical scan fragments up to 99.Bayi%, the table is then started to focus on tracking and logging. Today, the DBCC SHOWCONTIG with tableresults command examines all of the

In our traditional understanding that SQL can only be installed in Windows systems, but now Microsoft also embraced Linux, the emergence of SQL for Linux version, although currently a technical preview version, but in the near future will appear in

Table expressionTable expressions do not have any physical instantiation, they are virtual when querying table expressions, internal queries are non-nested, in other words, external queries and internal queries are merged directly into a query of an

First, the concept of the indexThe purpose of the index: our data query and processing speed has become a measure of the success of the application system standards, and the use of indexes to speed up data processing speed is often the most commonly

This happens sometimes when you install SQLServer2005 (or the SQLServer2005 that comes with Visual Studio 2008) with SQL Server authentication:The reason for this error is that when you install SQL Server, the logon method is restricted to Windows

DataTable dt = connect.bindtable ("Select name, address, current date from the table GROUP by name, address, current date order by name, address, current date desc");Export (DT);/*exel file Import function */private void Export

A description of the content The most important thing in SQL Server database is database backup and restore, and when the database is catastrophic, you need to have the best recovery plan, recover the data and restore the solution. For databases

Annotated Source:http://www.cnblogs.com/xunziji/archive/2011/07/27/2118063.html--Begin CPU analysis optimized for related SQL--Use the DMV to analyze the statements in which SQL Server has accumulated the most CPU resources since it was started. For

SELECT *from dbo. student;--1, inserting data insert, comma-delimited can insert multiple inserts dbo at the same time. Student (Stuid, Class, Stuname, Stuenname, Stuage, Stubirthday, Stusex, Height, Remark) VALUES (' 007 ', --Stuid-varchar

I just installed the Microsoft SQL Server 2000 Human Edition and found out how the SQL statements are different from the standard. For example, I use the simplest query statement "SELECT * from user" query table user, the result it hints syntax