SQL Server

As long as the basic SQL statements will be written, then learn the stored procedure is very cool!Stored Procedures (Stored Procedure) are in a large database system, a set of SQL statements to complete a specific function , stored in the database,

Type conversion functions cast and convert--cast is generally easier to use, and the advantage of convert is that you can format dates and valuesSelectCAST ('123' as int) --123SelectCONVERT (int,'123') --123SelectCAST (123.4 as int)

Get extended properties for all dbo tables:SELECT * from fn_listextendedproperty (null, ' schema ', ' dbo ', ' table ', default, NULL, NULL)The approximate result:ObjType objname Name ValueTable name extended property name valueTo get the extended

SQL Server database self-optimizing release time under large data volume:2013-12-17 15:19:00 Source: Forum anonymous Keywords: database development1.1: Add secondary data filesStarting with SQL SERVER 2005, the database does not generate the NDF

The server suddenly in a virus, after killing, the result of two services also lost, from other machines copy two EXE come over, write these two services are done, do not reload MSSQL2005SC create MSSQLSERVER binpath= "\" C:\Program Files\Microsoft

A. Variable1.if Cycle2.3.while Cycle declare @ss int set @ss =2 while @ss begin print ' Hello ' set @[email protected]+1 end --break jump out of the loop declare @sss int set @sss =2 while @sss begin print ' Hello '

This is not required, but if the table name or field name references a keyword in SQL Server, the database does not recognize whether this is a keyword or a table name (or field name) that must be added.For example, a table named User,user is a

1, null and any operator are null after operationNormal values are generally possible operator operations, but for example: ID is listed as int, so you can: id=id+1, etc., but if the value of a column is Null,null+1=nullFor exampleUpdate TestnullSet

MERGE target TableUSING source TableOn match conditionWhen matched thenStatementWhen isn't matched thenStatementWhere the last statement semicolon can not be omitted, and the source table can be either a table or a subquery statementWhen not matched

From Save (not permitted) Dialog Box on MSDN: the  Save   (not permitted) dialog box warns you saving changes are not Permi tted because the changes you had made require the listed tables to be dropped and re-created. The following

The basic unit of data storage in SQL Server is the page. The disk space allocated by the data file (. mdf or. ndf) in the database can be logically divided into pages (numbered from 0 to n consecutively). Disk I/O operations are performed at the

Basic concepts of SQL Server 2005 mirroring configurationI understand that the SQL Server 2005 mirroring configuration is actually a guaranteed data environment consisting of three servers (or three SQL instances of the same server), namely: master

I used to see some friends who said that SQL Server 2008 must be able to export scripts that contain data, and then carefully investigate the fact that SQL Server R2 is also available, just set it up in advanced when exporting.1. First right-click

1. IntroductionIn the list query due to the amount of data, one-time detection will be very slow, even if once detected, and can not be displayed to the client, so to the data in batches to query out, each page shows a certain amount of data, which

Sqlsever Configure the method of the mailbox do not say, Baidu search by itself. e-Mail can be very convenient to help operators to do statistics or send to customers customized orders and so on.The following is a list of 3 examples of sending mail

Definition and Usage:The CONVERT () function is a general function that converts a date to a new data type.The CONVERT () function can display date/time data in different formats.Grammar:CONVERT (data_type (length),

You are generally in the company of Oracle, rarely used SQL Server, then today to tell you about SQL Server commonly used to start the way:The SQL Server instance is divided into the following startup methods:(1) Start manually in the Windows

Don't be a program that only understands database queries ape, learning database We don't just may not tress. Before looking at the "Microsoft SQL Server Internals" to know what the database is and what network transport protocols The database uses,

The order of clustered indexes is the physical order in which data is stored, so a table can have at most one clustered index.The order of nonclustered indexes is independent of the physical storage order.The data in SQL Server is indexed by the

Rounding the use of the round Function and cast and convert functions, sqlserverround Introduction I encountered a problem when I communicated with the test about a percentage calculation method today. I used a strong conversion CAST (32.678 AS