SQL Server

1. Get the current timeSELECT GETDATE () as ' current date ', Datename (year, GETDATE ()) as ' Years ', datename (month, GETDATE ()) as ' month ',        Datename (Day, GETDATE ()) as ' Days ', Datename (DW, GETDATE ()) as ' Week ', Datename (week,

5th Lesson Advanced Data Filtering5.1 Combining WHERE clausesThe WHERE clause introduced in the 4th lesson is a single condition when filtering data.5.1.1 and operatorRetrieve the names and prices of all products manufactured by Vendor DLL01 and

Many of the developers of the comrades, believe that in the first use of SQL server2008+c#2012 (more than 2012 version) will appear in the following picture of the problem, because the installation of Visual Studio 2013 or 2012, will automatically

An index is an on-disk structure associated with a table or view, which speeds up the retrieval of rows from a table or view. An index contains keys that are generated by one or more columns in a table or view. These keys are stored in a structure

First, write it in front.Recently has been thinking about a problem, what can let us do not appear impetuous, the real calm down, the heart to feel, intentions to answer everyone's questions, intentions to help others. The reality of life, often let

Invalid credentials supplied by SQL Server 2008 Proxy service The SQL Server 2008 Proxy service has invalid credentialsProblems that occur when you install SQL Server 2008 in Windows Server 2008:The following issues occurred during installation at

In SQL Server, a nonclustered index can actually be seen as a table with a clustered index, but relative to the actual table, the number of columns stored in a nonclustered index is much less, typically an indexed column, a clustered key (or RID). A

Original: Simple learning of locks in SQL ServerBrief introductionIn SQL Server, each query will find the shortest path to achieve its own goal. If the database accepts only one connection at a time, only one query is executed. Then the query is, of

SQL Server Stored ProceduresA stored procedure in Transact-SQL, very similar to a method in the Java language, can be called repeatedly. After the stored procedure executes once, the statement can be cached so that the statements in the cache are

Private voidAddshuju_click (Objectsender, RoutedEventArgs e) {Stopwatch Wath=NewStopwatch (); Wath. Start (); for(inti =0; I Ten; i++) { //Create a DataTable instanceDataTable data =NewDataTable (); //Fill

An error occurred when the INSTEAD of Update View Trigger association table update originated in the system is as follows:MSG 414, Level 16, State 1, line 1thUpdate is not allowed because the statement updates the view "Vtesttab" and the view

Microsoft's saying: https://msdn.microsoft.com/zh-cn/library/ms365247.aspxYou can create with commands:A. Creating unique indexes, full-text catalogs, and full-text indexesJobCandidateID column of the HumanResources.JobCandidate table of the

4. Data chapter of SQL Server storage engine(4.1) Documents(0) Primary data file. MDF initial file size is at least 3MB, secondary data file. ndf initial size, the same log file at least 512KB;(1) SQL Server logically uses filegroups to manage files

SQL Server String FunctionsString functions are used to perform various operations on characters and binary characters1.ASCII () functionThe ASCII (character_expression) function is used to return the leftmost ASCII code value in a string expression.

CREATE VIEW View_1--Create a new view name as--functions for building viewsSelectStudent.sno,sname,cno,degree fromStudent join score on student.sno=Score.sno GoSelect* fromView_1wheresno='1'Select* from(SelectStudent.sno,sname,cno,degree fromStudent

Blog Source: http://www.cnblogs.com/kerrycode/p/3946268.htmlConcept IntroductionDevelopers like to use with (NOLOCK) in SQL scripts, with (NOLOCK) is actually one of the table hints (table_hint). It is equivalent to readuncommitted. The specific

Requirements DescriptionIn our production environment, in most cases, we need to have our own operation and maintenance system, including the detection of their own health status. In the event of an exception, an early warning is required, and the

7th chapter Using SQL Server Management Studio7.1 SQL Server Management Studio Overview7.1.1 starting SQL Server Management Sutdio7.1.2 connecting to a specific server instance7.1.3 connecting to a specific database7.2 Management Server Groups7.2.1

Software is bigger, customers more, a database server is far from enough, when there is a data server gua, then the whole system will crash, so must consider the database of automatic synchronization and backup, when a database serviceDowntime, it

MySQL servers can operate in different SQL modes, and different modes can be applied to different clients. This allows each application to customize the operating mode of the server according to its own needs.The schema defines which SQL syntax