SQL Server

Depending on the implementation policy, there are three main types: snapshot replication, transaction replication, and merge replication. The three replication types have their own characteristics and are applicable to different scenarios. Generally,

-- Create a Test Database Create Database DB Go -- Back up the database Backup database dB to disk = 'C: \ dB. Bak' with format Go -- Create a test table Create Table dB. DBO. tb_test (id int) -- Delay 1 second, and then perform subsequent

Solution Overview: 1. Change the file name during file storage 2. Configure the Indexing Server and associate the Indexing Server with the ms SQL Server. 3. Modify the SQL statement and add the content of the full-text query statement to the query

SQL Server replication is divided into three types. The following describes these three Replication technologies and their existing defects. You can select an appropriate replication method based on the specific situation during use, avoid

Set the global variable lower_case_table_names to 1. Lab:1. lower_case_tables_name = 0 (default in Linux) Start mysql directly and create tables MyTable and mytable in mytestMysql> use mytest;Mysql> create table MyTable (id int not null, name

1. SQL Server Import and Export wizard. This method is the most convenient. Import wizard, Microsoft provides a variety of data Source drivers, including SQL Server Native Cliant, OLE DB For Oracle, Flat File Source, Access, Excel, XML, etc, it can

Copy codeThe Code is as follows :/* -- Set uppercase letters for the first character string in SQLServer: -- Author: jinjazz/csdn -- Enable OLEAutomation in SQLServer2005 Sp_configure 'show advanced options', 1; Go RECONFIGURE; Go Sp_configure 'ole

1. xml. exist If the input is an XQuery expression, 0, 1 or Null is returned. 0 indicates no, 1 indicates yes, and Null indicates that the input is Null. 2. xml. value The input is an XQuery expression and returns an SQL Server scalar value. 3. xml.

1. Basic usage of ROW_NUMBER: SELECTSalesOrderID,CustomerID,ROW_NUMBER () OVER (order by SalesOrderID) AS RowNumberFROM Sales. SalesOrderHeaderResult set:SalesOrderID CustomerID RowNumber-------------------------------------------43659 676 143660 117

Some Trojan fields in sqlsever are cleared. Now we summarize the article "replacing database Trojan fields in batches with sqlsever", hoping to help those in need.[Solution]1. Back up data first to prevent data loss when the trojan field is deleted;2

10 threads operate simultaneously, and the same data is inserted frequently. Although data is inserted using:Insert inti tablename (fields ....) select @ t1, @ t2, @ t3 from tablename where not exists (select id from tablename where t1 = @ t1, t2 = @

SQL Server provides the system stored procedure sp_procoption, which can be used to assign one or more stored procedures to be automatically executed when the SQL Server service starts. This is a good choice and can be used for a variety of purposes.

Select CONVERT (varchar, getdate (), 120)11:06:08Select replace (CONVERT (varchar, getdate (), 120 ),\'-\',\'\'),\'\', \'\'),\':\',\'\')20040912110608Select CONVERT (varchar (12), getdate (), 111)2004/09/12Select CONVERT (varchar (12), getdate (), 11

General steps for mssql database system crashDescription:SQL Server 2000 crashes and the database is reinstalled.Make the following preparations:1. Complete backup of three system databases (master, msdb, model:2 backup of two user databases (user01,

Sometimes it is a full backup. When restoring, the database files will not be restored from time to time. solution:You can directly copy database files, xxx. mdf and xxx. ldf (you need to stop the SQL Server service before the actual replication

-- Create a Test DatabaseCreate database DbGO-- Back up the database Backup database Db to disk = 'C: \ db. Bak' WITH FORMATGO-- Create a test table Create table Db. dbo. TB_test (ID int)-- Delay 1 second, and then perform subsequent operations

Expert answersBy querying three system tables in any database, you can obtain the default values of each field in each table. The following is the core query. It returns the default value allocated to each user table in the current database. This

If exists (select * from tempdb .. sysobjects where id = object_id ('tempdb .. # temp '))Drop table # tempTemporary table You can create local and global temporary tables. The local temporary table is only visible in the current session; the global

In many basic table-based queries, to meet one condition, you often need to join another table. In this case, using EXISTS (or not exists) usually improves the query efficiency. IN a subquery, the not in Clause executes an internal sorting and

SQLServer has three keywords that can be used to modify comparison operators: All, Any, and Some. Some and Any are equivalent.Official reference documentsHttp://technet.microsoft.com/zh-cn/library/ms187074%28SQL.90%29.aspxThey act between comparison