SQL Server

Update table name Set Text Type field name =replace (CONVERT (varchar (8000), Text Type field name), ' character to replace ', ' replaced by value ' 1.update ntext: (1) The varchar and nvarchar types are support replace, so if your text/ntext is

FOR XML PATH Some people may know that some people may not know, in fact, it is the query result set in the form of XML, with which we can simplify our query to implement some of the work that might previously need to be done with the help of a

SQL Server itself has data import operations. However, if you want to import data from a backed-up file, you need to do another operation. Here is an example to illustrate. There is already a DOE database on the SQL Server server, and there is a

Prerequisites Need Tools: SQL Query Analyzer and SqlExec sunx Version The first part: Analysis and summary of the protection system for removing xp_cmdshell: First know the statement: 1. The way to remove the xp_cmdshell extension process is to

Because your development environment uses MS SQL Server 2005, and the server is still deployed with MS SQL 2000, you have to import MS SQL Server 2005 into MS SQL Server after system development is complete 2000, although the same Ms family of

SQL Server time format convert Select CONVERT (varchar), GETDATE (), 0): 2006 10:57am Select CONVERT (varchar), GETDATE (), 1): 05/16/06 Select CONVERT (varchar), GETDATE (), 2): 06.05.16 Select CONVERT (varchar), GETDATE (), 3): 16/05/06

Lazy to find a ready-made function, it turns out that the people writing SQL Server than I am lazy, even this basic function is not! Good, because all I want is the serial number and it will be reset every month, and the maximum ordinal will not

Server|sqlserver This article summarizes how to save pictures to SQL Server in. NET WinForm and. NET WebForm (asp.net) and read the displayed methods 1, use asp.net to upload pictures and save them to SQL Server, then read and display them from SQL

asp.net|server| Access There are two ways to access a SQL Server database in asp.net, which are System.Data.OleDb and System.Data.SqlClient. The following procedure takes System.Data.SqlClient as an example to access the local database server. First,

1 Installation optimizationIn general, the more complex the system functions, the worse the performance will be. Therefore, when compiling and installing MySQL, only the required function modules are installed. such as the storage engine, the

OverviewYesterday afternoon saw suddenly, "furnace stone legend" game database outage and caused data loss accident news. When I first saw it, it was full of magic. Blizzard Ah, NetEase ah.Are all very bull-forked companies. I like all the games

a problem with SQL Server was encountered yesterday: a stored procedure was needed to process the data from several tables, and finally the problem was that I wanted to stitch a row of rows of one column of a table For example, there are two columns

During the use of SQL Server, several functions (stored procedures) that are useful, but less common (or less detailed) are found:Isnumeric,isdate,patindex,newid,collate,sp_executesql,checksumWrite it down for future enquiries. Dare not to enjoy

This is a simple database document generation tool, the main implementation of SQL Server generation instructions document of the gadget, is not perfect, the main can be the database table and table detailed field information, export toIn Word, you

To achieve the following effect, is the most time after grouping the data:1. SQL Select * from (select *, row_number () through (PARTITION by Rip_guid ORDER by Ru_createdtime DESC) RN

Create DATABASE Inter_transformationGoCREATE TABLE Tb(Uname varchar (30),Course varchar (30),fraction int)GoINSERT into TB values (' Zhang San ', ' language ', 74)INSERT into TB values (' Zhang San ', ' math ', 83)INSERT into TB values (' Zhang San '

A Cartesian productSELECT * FROM table 1, table 2Traverse the records of two tables to displayHorizontal connection of two tables1 using foreign key relationships as a conditionSELECT * from table 1, table 2 where table 1 table 2 foreign KEY

The previous article describes the mouse operationTwo missing knowledge:primary foreign key Two column data type must be consistent //int type cannot constrain nvarchar type varchar type cannot constrain nvarchar typevarchar (max) cannot be a

One. Create a SQL file and write the following code in it:Use MasterGODECLARE @str varchar (100)Set @str = ' D:\sqlserver14backup\CDB\ ' +replace (replace (replace (CONVERT (Varchar,getdate (), 20), '-', '), ', '), ': ', ' ) + '. Bak 'BACKUP

The case has two formats: the simple and the search functionSimple Case functionExample: Case SexWhen ' 1 ' Then ' men 'When ' 2 ' then ' women 'Else ' other ' EndCase Search functionExample: CaseWhen sex = ' 1 ' Then ' man 'When sex = ' 2 ' Then