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Preparations before deploying SQL Server on the new Server When you need to deploy a new server, you may encounter many mistakes if you have no deployment experience, and make the maintenance work more difficult in the future, here I will share some of my
Recently, due to work needs, I hope to make a comprehensive summary of the considerations related to SQL Server database performance optimization. After searching online, I found manyArticleSome of them list hundreds of entries, but you can see that there are a lot of seemingly incorrect or outdated information (which may be applicable to versions earlier than SQL
Label:Original: SQL Server Automation Operations series--about mail notification that something (. NET Developer Benefits)Requirements Description In 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, an
ignored when we do not perform backup or maintenance tasks on the database. Before SQL Server2005, you can actually delete the database, and only SQL Server is still available, but you cannot maintain any backup history, and you cannot define tasks, warn, work, or create replication, but because the default msdb datab
the use of indexed views. When the query cost is less than 1 o'clock, the indexed view is rarely used.Applications that use indexed views to benefit include:Determine support workloadData martOnline analytical Processing (OLAP) libraries and sourcesData mining effortFrom the point of view of the type and pattern of the query, the benefit application can be summed up as an application containing the following content:Joins and aggregations of large tablesDuplicate mode of queryDuplicate aggregat
First: Formulation of scheduled jobs Enterprise Manager -- Manage -- SQL Server proxy -- Right-click a job -- Create a job -- Enter the job name in "general" -- "Step" -- New -- Enter the step name in "Step name" -- Select "Transact-SQL script (tsql)" in "type )" -- "Database": select the database for Command Execution -- Enter the state
problems in the operating system, network, and multi-user concurrency environments, the optimization is also extended to the optimization of the operating system, network and physical database storage. The optimization method at this stage will not be expanded here. It only describes the index maintenance method: A. You can use the DBCC dbreindex statement or the SQL
, and requires an immeasurable amount of processor time to retrieve the "Helen Meyer" line.ConclusionCreating a good index can greatly improve database performance. On the next level, we'll start studying the physical structure of the index. We will look at why this nonclustered index is so beneficial to this query and why it may not always be the case. Future levels will include other types of indexes, additional benefits for indexes, index-related costs, monitoring and
. After shrinking the database, we recommend that you set your database attributes to the standard mode. The operation method is the same as the first one, because logs are often an important basis for restoring the database in case of exceptions. 4. Set daily automatic Database Backup We strongly recommend that users with conditions perform this operation!1. Open the Enterprise Manager and click Microsoft SQL
combination of large query possibility of the field is placed in front.4.Design of foreign keysForeign keys as database objects, many people think the trouble without, in fact, foreign keys in most cases is very useful, the reason is:Foreign key is the most efficient consistency maintenance method, database consistency requirements, can be used in order to use foreign keys, check constraints, rules constraints, triggers, client programs, it is genera
This article explores the built-in XML support in SQL Server 2005. Describes how this support integrates with client programming supported by the. NET framework V2.0 and native code, such as OLE DB and SQLXML. First, Introduction Extensible Markup Language (XML) is widely used as a platform-independent representation of data. It is useful for exchanging information within loosely coupl
I/O. 2. vertically and horizontally split the table to reduce the table size (sp_spaceuse) 3. upgrade hardware 4. Create an index based on the query conditions, optimize the index, optimize the access mode, and limit the data volume of the result set. Note that the fill factor should be appropriate (preferably the default value 0 ). The index should be as small as possible. Use a column with a small number of bytes to create an index (refer to the index creation). Do not create a single i
In one case, there are two warnings when installing sqlServer2005: 1 COM + catalog requirements 2 Edition Change Check Depressed! There are two warnings on the internet that are definitely not successful! I tried it with a fluke and succeeded. After the installation is successful, prepare "tools only, Books Online, and sample (T)" But not installed, he prompts me that the workstation component has been installed and cannot be updated or upgraded to an existing component. Solution: 1 Open
Resolve SQL Server 2012 Installation CenterWhen the system opens the SQL Server Installation Center, we can start the normal installation of SQL Server 2012.SQL
conditions. If one clause has an available index, the optimizer determines its selectivity. Therefore, during the design process, you should carefully check all the queries based on the query design principles, and design indexes based on the query optimization features. (1) narrow indexes have high efficiency. For narrow indexes, a large number of index rows can be stored on each page, and the index level is also small. Therefore, more index pages can be stored in the cache, which also reduces
result, more index pages can be placed in the cache, which also reduces I/O operations. (2) The SQL Server optimizer can analyze a large number of indexes and merge possibilities. As a result, more narrow indexes can provide more choices to the optimizer than fewer wide indexes. But do not keep unnecessary indexes because they increase the cost of storage and maintena
it is to increase I/O.2. Vertical and horizontal partition table, reduce the size of the table (Sp_spaceuse)3. Upgrading hardware4, according to the query criteria, index, optimize the index, optimize access mode, limit the data volume of the result set. Note that the fill factor is appropriate (preferably using the default value of 0). The index should be as small as possible, using a Lie Jian index with a small number of bytes (refer to the creation of the index), do not Jianjian a single ind
page, and the index level is also small. Therefore, more index pages can be stored in the cache, which also reduces I/O operations. (2) the SQL Server optimizer can analyze a large number of indexes and the possibility of merging. Therefore, compared with a small number of wide indexes, a large number of narrow indexes can provide more choices for the optimizer. However, do not keep unnecessary indexes bec
ObjectiveThe full name of SQL is the Structured Query Language (structured Query Language), which is the most commonly used language in a relational database. Not only can SQL manage the data in the database, but it can also manage the relational database itself. In order to avoid the SQL syntax incompatibility between the database products, the
SQL server databases are the most widely used relational databases. However, in actual application, many databases need to be optimized. When the data volume is particularly large, we must rely on the optimization of our team's database. Such as creating indexes, table partitions, database shards, and table shards. This article summarizes some optimization methods. Address of this Article There are many rea
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