SQL Server

The operating environment is visual Studio 2010, and the database is SQL Server 2008.Execute the following SQL statementSELECT Count (CollectionID) Collectionnumber,Count(LName) plantnumber from (SELECTDISTINCT Subsiteid, Subsitetitle,

Transferred from: http://blog.itpub.net/16436858/viewspace-609341/BEGINWith TX as(SELECT a.object_id, B.name as Schema_name, A.name as table_name, C.name as Ix_name, C.is_unique as Ix_unique, C.type_desc as Ix_type_desc, d.index_column_id,

General production Library, usingBackup LOG every 10 minutes, backup diff every day, backup full policy weekly.There are offsite backups at the same time. Offsite backups Use the Cmdshell stored procedure of SQL Server itself to invoke system

In SQL Server, we can often use the connection, and today we summarize the basics of connectivity.Categories of connections: Cross Join Inner connection INNER JOIN Outer JOIN {LEFT outer connection [OUTER] join, right outer join;

--Simple assignmentDECLARE @a intSet @a=5Print @a--Assigning values using the SELECT statementdeclare @user1 nvarchar (50)Select @user1 = ' Zhang San 'Print @user1declare @user2 nvarchar (50)Select @user2 = Name from St_user where id=1Print

in this example, the begin Tran and with (holdlock) hints are used to observe the locks of SQL Server in the SELECT statement. The transaction is turned on to ensure that the lock is also observed by a very short query, because HOLDLOCK releases the

In SQL Server, I often see some predecessors write this:if (@ @error <>0) ROLLBACK TRANSACTION telse COMMIT TRANSACTION TAt first, I saw someone else write it, and I took it for granted that it was just a counter, and whenever an error was

In the previous article, we completed the functional components of SQL, and then we then how to connect to manage the use of this CentOS SQL Server.We can download a SQL manager for connection use, this SQL Manager recommends downloading in

In the previous article, I gave you a detailed demonstration of the whole process of CentOS 7 from the installation of the system to the installation of SQL, where I will continue to introduce some of the functional components of SQL Server

QL Server method for extracting Chinese characters/numbers/letters--Extracting numbersIF object_id (' DBO. Get_number2 ') is not NULLDROP FUNCTION DBO. Get_number2GoCREATE FUNCTION DBO. Get_number2 (@S VARCHAR (100))RETURNS VARCHAR (100)AsBEGINWhile

These days of practice. Come across a little bit of a problem. For example, I have scores initialized in the score table for all 0. So now I want to randomly generate 100 or less data to write in, how should I do it? You can use a few small

First, the table related1. Create USE[TEST]GOSETANSI_NULLSONGOSETQUOTED_IDENTIFIERONGOCREATETABLE[DBO] . [Ceshi] ([Id] [int] not null,[name] [varchar ()] null, constraint [pk_ceshi]  primary key clustered  ([Id] asc) with 

First, ensure that the Win7 can telnet to the MySQL port, firewall settings can refer to http://www.cnblogs.com/ShanFish/p/6519950.htmlSecond, configure the System DSN1. Install MySQL ODBC driver on Win72, management tools->ODBC data source, System

(It should be 154 Blue House only)CREATE database nameOn [PRIMARY]( [, ... n] [)[LOG on]( [, ... n]CREATE DATABASE StudbOn PRIMARY--The default is the PRIMARY primary filegroup, which can be omitted(Name= ' Studb_data ',--the logical name of the

If you want to manipulate a table to have a certain understanding of the table, then you can use two sentences SQL to intuitively understand the table structuresp_help table name;Andsp_columns table name;There are also some very basic operations,

This paper expounds the basic concepts related to the mapping between object and database, and how to implement the method of automatic mapping from relationship to object in Vs+sql server environment.I. INTRODUCTION of ORMObject-Relational mapping (

SQL Server often uses a paging method to summarizeThe following demo sample summarizes that SQL Server database is frequently used for paging methods and is only for learning referencesA, using RowNumber and between and combination paging:/**********

View table:exec sp_help table name Look up columns: exec sp_columns table name View column:Select * from information_schema.columns where table_name = ' table name ' Add column:ALTER TABLE name add column name varchar Delete

Tag: Server database trigger record accountIn this case, you need to update the TableB (the library ServerB in Server 172.16.8.101 databaseb) at the same time as the Update table TableA (library databasea in Server ServerA 172.16.8.100). TableA is

MySQL database source command details and examples, mysqlsource MySQL database source command details and examples MySQL database source command, which is a Database Import command. The usage of the source command is very simple. First you need to