Microsoft sql server 2014 data tools - business intelligence for visual studio free.What's new in SQL Server Analysis Services
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Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. This article summarizes new features, improvements, deprecated and discontinued features, and behavior and breaking changes in the most recent versions of SQL Server Analysis Services SSAS. It includes the following improvements:. Intellihence MDX query patterns now require fewer SE queries microsoft sql server 2014 data tools - business intelligence for visual studio free previously numerous SE queries were necessary to support different granularity.
Fewer SE queries mean fewer expensive scans over large models, which results in significant performance gains, especially when connecting to a tabular models in Direct Query mode. You can better control process expensive queries that result in significant materialization. If the query hits the limit specified, the engine cancels the query and returns an error to the caller, reducing impact on other concurrent users.
Client applications can further reduce the memory allowed per query by specifying the DbpropMsmdRequestMemoryLimit connection string property.
Specified in Kilobytes, this property overrides the QueryMemoryLimit server memory property value for посмотреть еще connection.
This property setting improves user query response times in high-concurrency scenarios. To tols more, see Query interleaving businese Configure. Freee are no businesd features announced with this release. The following features are discontinued in this release:. There are no breaking changes in this release. There are no behavior changes in this release. To learn more about and download the latest cumulative update, see SQL Server latest cumulative update.
Additional details for major feature updates for SSAS are described here. A separate announcement on the Power BI blog highlights how Power BI users can benefit from this multidimensional model performance improvement bisual downloading the latest version of Power BI Desktop.
Power BI automatically frer connections to multidimensional models sudio SuperDAX support and uses the same optimized DAX functions and query patterns that it already uses against tabular models. Use DAX variables, VARto calculate expressions only once at the place of definition, and then reuse the results in any other DAX expressions without having to perform the действительно.
jpg viewer windows 10 free free частенько again. To learn more about how DAX works with multidimensional models, and important patterns and constraints to be aware of, be sure to see DAX for multidimensional models. This release introduces the compatibility level for источник статьи models. Query interleaving is a tabular mode system configuration that can improve user query response посетить страницу in high-concurrency scenarios.
Query interleaving /11526.txt short query bias allows concurrent queries to share CPU resources. To microsofh more, see Query micorsoft. Calculation groups can significantly reduce the number of redundant measures by grouping common measure нажмите чтобы увидеть больше as calculation items.
Calculation groups are shown in reporting clients as a table with a single column. Each value in the column represents a reusable calculation, or calculation item, that can be applied to any of gools measures.
A calculation group can have visuwl number of calculation items. Each calculation item is defined by a DAX expression. To learn more, see Calculation groups. This property setting is already available for Azure Analysis Services.
The Power BI service caches dashboard tile data and report data for initial load of Live Connect report, sudio an microsoft sql server 2014 data tools - business intelligence for visual studio free number of cache queries being submitted to the engine, and in extreme cases overload ubsiness server.
The Читать далее property allows you to override this behavior at the server level. To learn more, see General Properties. This feature fres the ability to attach a tabular model as an online operation. Online attach can be used for synchronization of read-only replicas in on-premises query scale-out environments. This operation may require double the model memory to keep the old version online while loading the new version. DB1 version 2 is detached and placed on a location accessible to server B either via a shared location, or using robocopy, etc.
Without this feature, admins are first required to detach the database and then attach the new version of microssoft database. This leads to downtime when the database is unavailable to users, and queries against it will fail. When this new flag is specified, version 1 of the visua, is deleted atomically within the same transaction with no downtime.
However, it comes at the cost of having both databases loaded into intellligence simultaneously. This improvement allows many-to-many relationships between tables where both columns are non-unique.
A relationship can be defined between a dimension and fact table at a granularity higher than the key column of the dimension. This avoids having to normalize dimension tables and can improve the user experience because the resulting model has a smaller number of tables with logically grouped ontelligence.
Many-to-many relationships require models be at the and higher compatibility level. These settings are already available for Azure Analysis Services. There dql no discontinued features announced with this release. Building on the success of Tabular microsoft sql server 2014 data tools - business intelligence for visual studio free first introduced in SQL Server Analysis Servicesthis release makes tabular models more powerful than ever. In the Analysis Services источник статьи lifecycle, these modes are mature.
There are no new features for either of these modes in this release. However, bug fixes and performance improvements are included. While it's important to learn about all the new features, it's also important to know what is being продолжить чтение and discontinued in this release and future releases.
To take advantage /16843.txt microsoft sql server 2014 data tools - business intelligence for visual studio free of the new features and functionality described here, new or existing tabular models must be set or upgraded to the compatibility level. Models at the compatibility level cannot be deployed to SQL Server SP1 or earlier, or downgraded to lower compatibility levels. To learn more, see Compatibility level for Analysis Services tabular models.
In Visual Studio, you can select the new compatibility level when creating new tabular model projects. It's important to keep in mind, once you upgrade an existing model toyou can't downgrade. Be sure to keep a backup of your model database. When it comes to importing data from businsss sources into your tabular models, SSDT introduces the modern Get Data experience for models at the compatibility level.
The modern Get Data businrss provides immense data transformation and data mashup capabilities by using the Get Data microsoft sql server 2014 data tools - business intelligence for visual studio free builder and M expressions. The modern Get Data experience provides support for a wide range of data intellignece. Going forward, updates will include support for even more. The modern Intrlligence Data experience and M mashup capabilities do not apply to existing tabular models upgraded from the compatibility level to The new experience only applies to new models created at the compatibility level.
This release introduces encoding hints, an advanced feature used to optimize processing data refresh of large in-memory tabular models. Value encoding provides better query performance for columns that are typically only used for aggregations. Hash encoding is preferred for group-by columns often dimension-table values and foreign keys. String columns are sturio hash encoded.
Numeric columns can use either of these encoding methods. When Analysis Services starts processing a table, if either the table is empty with or without partitions or a full-table processing operation is being performed, daat values are taken for each numeric column to determine whether to apply value or hash dara. By default, value encoding is chosen when the sample of distinct values in the column is large enough - otherwise hash encoding usually provides better compression.
It is possible for Analysis Services to change the encoding method after the column is partially processed based on further information about the data distribution, and restart the encoding process; however, this increases processing time and is inefficient.
The performance-tuning whitepaper discusses re-encoding in more detail and describes how to detect it using SQL Server Profiler. Since aggregation over hash-encoded columns is slower than over value-encoded columns, value encoding may be specified as a hint for such columns. It is not guaranteed that the preference is applied. It is a читать статью as opposed to a setting.
To specify an encoding hint, set the EncodingHint property on the column. Possible microsoft sql server 2014 data tools - business intelligence for visual studio free are "Default", "Value" and bksiness.
In tabular models, you can model parent-child hierarchies. Hierarchies with a differing number of levels are often referred to as ragged hierarchies. By default, ragged hierarchies are displayed with blanks for vata below the lowest child. Here's an example of a ragged hierarchy in an organizational chart:.
This release introduces the Hide Members property. You can set the Hide Members property for a hierarchy to Hide blank members. When set to Hide blank membersand the model deployed, an easier to read version of the hierarchy is shown in reporting clients like Excel. You can now define a custom row set contributing to a measure value. Detail Rows нажмите для деталей similar to the default drillthrough action in multidimensional models.
This allows end-users to view information in more detail than the aggregated level. You can right-click intlligence cell with an aggregated value from the measure and then click Show Details to view the detail rows.
By default, the associated data in the Internet Sales table ingelligence microsoft sql server 2014 data tools - business intelligence for visual studio free. This limited behavior is often not meaningful for the user because the table may not have the necessary columns to show useful information such as customer name and order information.
The Detail Rows Expression property for measures allows model authors to customize the columns and rows returned intelligemce the end-user. The following example defines the columns to be returned for rows in the Internet Sales table in the sample Adventure Works tabular model:.
With the property defined and the model deployed, a custom row set is returned when the user selects Show Details. It automatically honors the filter context of the cell that was selected. In this example, only the rows for value are displayed:. In addition to measures, tables also have a property to define a detail rows expression.
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