– Download Microsoft® SQL Server® R2 Service Pack 3 from Official Microsoft Download Center

Those that decide to move to Azure SQL Managed Instance PaaS will also have access to continuous security updates, as this is a fully managed solution. These customers will also have access to Extended Security Updates on Azure for no additional charges above the cost of running the virtual machine. Extended Security Updates for on-premises or hosted environments: Extended Security Updates will also be available for workloads running on-premises or in a hosting environment such as with another cloud provider.

Product licenses and Software Assurance do not need to reside on the same enrollment. Customers can purchase Extended Security Updates only for the servers they need to cover. Extended Security Updates can be purchased directly from Microsoft or a Microsoft licensing partner. In Azure: Customers can begin migrating workloads to Azure Virtual Machines immediately and apply regular security updates until the End of Support date.

You don’t need to configure anything, and there’s no additional charge for using Extended Security Updates with Azure Virtual Machines. Extended Security Updates are available to purchase typically 3 months prior to End of Support dates with delivery of Extended Security Updates beginning after End of Support.

You can find more information about how to use Extended Security Updates here. Extended Security Updates will be distributed if and when available. SQL Server does not ship a general monthly security update. If there are situations where new SQL Server important updates will not be provided and it is deemed critical by the customer but not by MSRC, we will work with the customer on a case-to-case basis to suggest appropriate mitigation.

Software Assurance does not need to be on the same enrollment. Pricing is available on published price lists. Contact your Microsoft partner or account team for more details. The price of Extended Security Updates acquired through Microsoft resellers is set by the reseller. Pricing for Windows Server Extended Security Updates is based on Windows Server Standard per core pricing, based on the number of virtual cores in the hosted virtual machine, and subject to a minimum of 16 licenses per instance.

Pricing for SQL Server Extended Security Updates is based on SQL Server per core pricing, based on the number of virtual cores in the hosted virtual machine, and subject to a minimum of 4 licenses per instance. Software Assurance is not required. Contact your Microsoft reseller or account team for more details. If they licensed 8 cores for SQL Server on-premises and use Software Assurance benefits to have a secondary passive server i. Customers can then apply updates to their production workload on-premises and the secondary passive server i.

On—premises: Yes, Software Assurance is required for on-premises workloads. Azure Hybrid Benefit—hybrid cloud Microsoft Azure. However, they can move their workloads to Azure and get the Extended Security Updates for no additional charges above the cost of using the Azure service.

Customers with Software Assurance through other enrollments e. Pricing for Extended Security Updates will follow the current license model for the server. For example, Windows Server is licensed by core and is required for all physical cores on each server.

Customers cannot buy partial periods e. EA and Extended Security Updates must overlap for at least one month at the beginning of each year of Extended Security Updates coverage.

Customers must have active Software Assurance coverage or subscription licenses for at least one month at the start of each coverage period in order to be eligible for Extended Security Updates in that period. If customers purchase Extended Security Updates while Software Assurance is active, but Software Assurance lapses before the Extended Security Update coverage period begins, customers will not be able to receive updates. Extended Security Updates are available annually, for a fixed month period.

If a customer purchases Extended Security Updates in month 10 of the month period, that customer would still need to purchase the full 12 months. Customers must have purchased coverage for year 1 of Extended Security Updates in order to buy year 2, and coverage in year 2 in order to buy year 3. Customers may buy coverage for previous years at the same time they buy coverage for a current period.

It is not necessary to buy a certain period of coverage within that coverage period. Premier Support is not a base requirement, but an additional support contract is recommended if technical support will be required. Core licenses are sold in packs of two a 2-pack of Core Licenses , and packs of 16 a pack of Core Licenses. Each processor needs to be licensed with a minimum of eight cores four 2-pack Core Licenses.

Each physical server, including single-processor servers, will need to be licensed with a minimum of 16 Core Licenses eight 2-pack of Core Licenses or one pack of Core Licenses. Additional cores can then be licensed in increments of two cores one 2-pack of Core Licenses for servers with core densities higher than 8.

Customers cannot license individual Windows Server virtual machines. They must license the full physical server. Licensing requirements for Extended Security Updates on-premises align to the licensing requirements for the underlying Software Assurance coverage or subscription.

Customers will only need to know their Windows Server license position for a given server, to know how many Extended Security Update licenses they need. Customers who have covered all the underlying cores of the physical server with Windows Server Datacenter licenses should buy Extended Security Updates for the number of physical cores, irrespective of the number of VMs running on that physical server.

Customers who have covered all the underlying cores of the physical server with Windows Server Standard licenses should buy Extended Security Updates for the number of physical cores, but will only be licensed to run and update two virtual machines on the server. Customers who wish to run and update more than two virtual machines on a server licensed with Windows Server Standard must re-license all of the physical cores on the server with both Windows Server Standard and Extended Security Updates for each additional pair of virtual machines.

Microsoft will only produce updates which can be applied on the latest Service Pack. For customers who do not have Software Assurance, the alternative option to get access to Extended Security Updates is to migrate to Azure. For variable workloads, we recommend that customers migrate on Azure via Pay-As-You-Go, which allows for scaling up or down at any time.

For predictable workloads, we recommend that customers migrate to Azure via Server Subscription and Reserved Instances. Licenses and Software Assurance do not need to be on the same agreement. However, we recommend customers complete migration before the End of Support date so that they do not miss any Extended Security Updates. If customers miss a year of Extended Security Updates coverage, they may buy coverage for previous years at the same time they buy coverage for a current period.

Yes, customers can start a new , R2, , or R2 instance on Azure and have access to Extended Security Updates. Customers who purchase Extended Security Updates for production servers may also apply those security updates to servers licensed under Visual Studio MSDN subscriptions at no additional cost. There is no limit to the number of MSDN servers a customer can cover. Premium Assurance is no longer available, but we will honor the terms of Premium Assurance for customers who already purchased it.

Software Assurance is required as a pre-requisite to Extended Security Updates. Extended Security Updates coverage is not required to be co-terminus with Software Assurance coverage, but customers must have at least one month of qualifying Software Assurance coverage remaining at the time a given year of Extended Security Updates coverage is purchased. If they migrate to Azure, however, they can get support using their Azure Support Plan.

When customers have purchased Extended Security Updates and have an existing support plan:. Scenario: Support Team will work to troubleshoot customer issue Response: Yes.

Scenario: Support Team will do a root cause analysis Response: No. This program covers only the named product and the components that shipped with it.

Unless explicitly stated the scope of this program does not extend to any other products or tools that the customer may be running on or with the covered product. No, customers must purchase Extended Security Updates separately.

The cost of Extended Security Updates is not included in the price calculation of the Unified Support agreement. However, customers with Unified Support and Extended Security Updates can request technical support for the , R2, , or R2 servers covered by Extended Security Updates. Onsite or proactive support will only be available to a customer if it is part of their Unified Support agreement.

Yes, organizations which have purchased Extended Security Updates can submit support incidents using any Microsoft Support offering, including Unified and Premier Support. Microsoft Partners are also able to submit tickets on behalf of their customers as long as the customer has purchased Extended Security Updates, though Partners will need a support agreement in place to do so.

All customers must call Microsoft Support in order to place a request for a technical support incident. As we continue to work to fully automate the validation process, the tech routers will validate whether a customer purchased Extended Security Updates.

Once the customer is validated, a case will be created and routed to the appropriate queue for technical support. Customers should provide their Enterprise Agreement number or full customer name for validation. If an investigation determines that resolution requires product enhancement available in a recent release, then a request will be made to the customer to upgrade to a more recent release where the capability is already available. See online servicing for more details.

Extended Security Updates are not supported in offline servicing mode. Applying Extended Security Updates in offline servicing mode will generate an error and updates will fail.

The Wsusscn2. The latest Wsusscn2. Windows Server: Customers can leverage existing on-premises license investments to save on Azure Virtual Machines. Pricing is based on per core pricing, based on the number of virtual cores in the hosted virtual machine, and subject to a minimum of 16 licenses per instance for Windows Server and four for SQL Server.

Customers cannot apply them to non-covered databases or share them with hosters. The following describes pricing for Extended Security Updates in various hosted scenarios. Azure Pricing: Cost included in standard virtual machine rate SA or subscription required? The Extended Security Updates offer does not include technical support. Customers can use existing support agreements for questions.

However, free updates in Azure is the more attractive offer. They are Security Updates only. Customers can install Extended Security Updates using the tools and processes they are using today. The only difference is that the system must be unlocked for the updates to install. On-premises customers that purchase Extended Security Updates will receive an add-on key to activate Extended Security Updates through the volume licensing portal VLSC or alternatively, go to Azure Portal to do download keys link to service.

Specific KB information can be found in that blog post. This is also the process that customers will need to follow for Azure Stack. They do not replace the current product activation key e. Customers will need to install a new Extended Security Updates key each year they have Extended Security Updates deployed.

There is also time required for your organization to plan and deploy those MAK keys prior to deploying the security updates. Be sure to take this timeframe in mind as you consider purchasing ESU licenses. Pre-patched Windows Server R2 images will also be available from the Azure gallery.

If an Azure Virtual Machine is not configured to receive automatic updates, then the on-premises download option applies. For more information about automatic updates, see Manage Windows updates by using Azure Automation.

Microsoft recommends applying Extended Security Update patches as soon as they are available to keep their environment protected. For specific questions about update channels, and the instance registration and download process, please contact your Microsoft Technical Account Manager or Support resource. Windows Server SP2: The support will be in an upcoming release, but the same steps will apply. All rights reserved. Installation ID: For example, for a query that contains a join statement and a select statement, executing join on both the tables and then executing select on the results would give the same result as selecting from each table and then executing the join, but result in different execution plans.

In such case, SQL Server chooses the plan that is expected to yield the results in the shortest possible time. This is called query optimization and is performed by the query processor itself.

SQL Server includes a cost-based query optimizer which tries to optimize on the cost, in terms of the resources it will take to execute the query.

Given a query, then the query optimizer looks at the database schema , the database statistics and the system load at that time. It then decides which sequence to access the tables referred in the query, which sequence to execute the operations and what access method to be used to access the tables. For example, if the table has an associated index, whether the index should be used or not: if the index is on a column which is not unique for most of the columns low “selectivity” , it might not be worthwhile to use the index to access the data.

Finally, it decides whether to execute the query concurrently or not. While a concurrent execution is more costly in terms of total processor time, because the execution is actually split to different processors might mean it will execute faster. Once a query plan is generated for a query, it is temporarily cached.

For further invocations of the same query, the cached plan is used. Unused plans are discarded after some time. SQL Server also allows stored procedures to be defined.

Stored procedures are parameterized T-SQL queries, that are stored in the server itself and not issued by the client application as is the case with general queries. Stored procedures can accept values sent by the client as input parameters, and send back results as output parameters. They can call defined functions, and other stored procedures, including the same stored procedure up to a set number of times.

They can be selectively provided access to. Unlike other queries, stored procedures have an associated name, which is used at runtime to resolve into the actual queries. Also because the code need not be sent from the client every time as it can be accessed by name , it reduces network traffic and somewhat improves performance.

It exposes keywords for the operations that can be performed on SQL Server, including creating and altering database schemas, entering and editing data in the database as well as monitoring and managing the server itself. Client applications that consume data or manage the server will leverage SQL Server functionality by sending T-SQL queries and statements which are then processed by the server and results or errors returned to the client application.

For this it exposes read-only tables from which server statistics can be read. Management functionality is exposed via system-defined stored procedures which can be invoked from T-SQL queries to perform the management operation.

Linked servers allow a single query to process operations performed on multiple servers. It natively implements support for the SQL Server features including the Tabular Data Stream implementation, support for mirrored SQL Server databases, full support for all data types supported by SQL Server, asynchronous operations, query notifications, encryption support, as well as receiving multiple result sets in a single database session.

NET Framework. Unlike most other applications that use. NET Framework runtime , i. SQLOS provides deadlock detection and resolution services for. NET code as well. Managed code can also be used to define UDT’s user defined types , which can persist in the database. Managed code is compiled to CLI assemblies and after being verified for type safety , registered at the database. After that, they can be invoked like any other procedure.

Most APIs relating to user interface functionality are not available. However, doing that creates a new database session, different from the one in which the code is executing. NET provider that allows the connection to be redirected to the same session which already hosts the running code. Such connections are called context connections and are set by setting context connection parameter to true in the connection string. NET API, including classes to work with tabular data or a single row of data as well as classes to work with internal metadata about the data stored in the database.

SQL Server also includes an assortment of add-on services. While these are not essential for the operation of the database system, they provide value added services on top of the core database management system.

The SQL Server Machine Learning services operates within the SQL server instance, allowing people to do machine learning and data analytics without having to send data across the network or be limited by the memory of their own computers. The services come with Microsoft’s R and Python distributions that contain commonly used packages for data science, along with some proprietary packages e.

Analysts can either configure their client machine to connect to a remote SQL server and push the script executions to it, or they can run a R or Python scripts as an external script inside a T-SQL query. The trained machine learning model can be stored inside a database and used for scoring. Used inside an instance, programming environment. The Service Broker, which runs as a part of the database engine, provides a reliable messaging and message queuing platform for SQL Server applications.

Service broker services consists of the following parts: [35]. The message type defines the data format used for the message. This can be an XML object, plain text or binary data, as well as a null message body for notifications. The contract defines which messages are used in an conversation between services and who can put messages in the queue. The queue acts as storage provider for the messages. They are internally implemented as tables by SQL Server, but don’t support insert, update, or delete functionality.

The service program receives and processes service broker messages. Usually the service program is implemented as stored procedure or CLR application. Routes are network addresses where the service broker is located on the network. Also, service broker supports security features like network authentication using NTLM , Kerberos , or authorization certificates , integrity checking, and message encryption.

SQL Server Replication Services are used by SQL Server to replicate and synchronize database objects, either in entirety or a subset of the objects present, across replication agents, which might be other database servers across the network, or database caches on the client side. SQL Server supports three different types of replication: [36]. Analysis Services includes various algorithms— Decision trees , clustering algorithm, Naive Bayes algorithm, time series analysis, sequence clustering algorithm, linear and logistic regression analysis, and neural networks —for use in data mining.

It is administered via a web interface. Reporting services features a web services interface to support the development of custom reporting applications. Reports are created as RDL files. A subscriber registers for a specific event or transaction which is registered on the database server as a trigger ; when the event occurs, Notification Services can use one of three methods to send a message to the subscriber informing about the occurrence of the event.

The full text search index can be created on any column with character based text data. It allows for words to be searched for in the text columns. Full allows for inexact matching of the source string, indicated by a Rank value which can range from 0 to —a higher rank means a more accurate match.

It also allows linguistic matching “inflectional search” , i. Proximity searches are also supported, i. These processes interact with the SQL Server. The Search process includes the indexer that creates the full text indexes and the full text query processor. The indexer scans through text columns in the database. It can also index through binary columns, and use iFilters to extract meaningful text from the binary blob for example, when a Microsoft Word document is stored as an unstructured binary file in a database.

The iFilters are hosted by the Filter Daemon process. Once the text is extracted, the Filter Daemon process breaks it up into a sequence of words and hands it over to the indexer. The indexer filters out noise words , i. With the remaining words, an inverted index is created, associating each word with the columns they were found in.

SQL Server itself includes a Gatherer component that monitors changes to tables and invokes the indexer in case of updates. The FTS query processor breaks up the query into the constituent words, filters out the noise words, and uses an inbuilt thesaurus to find out the linguistic variants for each word. The words are then queried against the inverted index and a rank of their accurateness is computed.

The results are returned to the client via the SQL Server process. It allows SQL queries to be written and executed from the command prompt. It can also act as a scripting language to create and run a set of SQL statements as a script. Such scripts are stored as a. It also includes a data designer that can be used to graphically create, view or edit database schemas.

Queries can be created either visually or using code. The tool includes both script editors and graphical tools that work with objects and features of the server. A central feature of SQL Server Management Studio is the Object Explorer, which allows the user to browse, select, and act upon any of the objects within the server.

It includes the query windows which provide a GUI based interface to write and execute queries. Azure Data Studio is a cross platform query editor available as an optional download. The tool allows users to write queries; export query results; commit SQL scripts to Git repositories and perform basic server diagnostics. It was released to General Availability in September It is based on the Microsoft Visual Studio development environment but is customized with the SQL Server services-specific extensions and project types, including tools, controls and projects for reports using Reporting Services , Cubes and data mining structures using Analysis Services.

From Wikipedia, the free encyclopedia. Family of database software. Main article: T-SQL. Main article: Microsoft Visual Studio. Main article: Business Intelligence Development Studio. Retrieved 23 December Archived from the original on May 30, Retrieved September 5, Microsoft Evaluation Center.

Microsoft Corporation. Retrieved July 18, December 21, Retrieved February 1, April 6, Retrieved SQL Server homepage. Microsoft Press. ISBN

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