SQL Server

Microsoft SQL Server 2017 powers your entire data estate by supporting structured and unstructured data sources. It builds on previous versions of SQL Server, which have been industry leading for four years in a row and a leader in TPC-E. It scales to petabytes of data and allows customers to process big data through PolyBase using T-SQL over any data. SQL Server has also been the least vulnerable database during the last seven years. SQL Server 2017 brings data insights with business intelligence capabilities that provide analytics at a fraction of the cost on any device along with advanced analytics with support for R and Python.

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  1. Run DBCC CHECKDB WITH PHYSICAL_ONLY automatically in the background

    When RAID controllers are idle, they automatically check the storage to make sure it's still okay. Why not SQL Server too?

    Some of the pieces are there – for example, SQL Server already has the ability to watch for idle CPU times and run Agent jobs when it’s bored. For starters, that’d probably be good enough to save a lot of small businesses from heartache. For the databases over, say, 100GB, it’d be really awesome to have resumable physical_only corruption checking – tracking which pages have been checked (just like how the differential bitmap tracks page changes), with page activity…

    356 votes
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    16 comments  ·  Suggestions  ·  Flag idea as inappropriate…  ·  Admin →
  2. develop a SSRS ReportViewer for ASP.NET Core

    Develop a SSRS ReportViewer for ASP.NET Core

    327 votes
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    under review  ·  49 comments  ·  Suggestions  ·  Flag idea as inappropriate…  ·  Admin →
  3. Add FOR CSV to facilitate CSV export

    We have FOR XML and FOR JSON. But it is not uncommon that people want to produce CSV files. This can be done with BCP, but it is not straightforward not the least if you want to add headers. And if you only want fields to be quoted when needed, BCP is not really what you are looking for. SSIS is also an alternative, but SSIS does not always fit in.
    Thus, it would be handy if there was a an option like FOR CSV, with a syntax like:
    FOR CSV [, HEADERS] [,DELIMITER(',')] [, QUOTE('"')]

    HEADERS would mean that…

    311 votes
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    under review  ·  12 comments  ·  Suggestions  ·  Flag idea as inappropriate…  ·  Admin →
  4. Provide a mechanism for columns to automatically update themselves

    It is extremely common for databases to contain columns like "UpdatedDate," "UpdatedBy," etc. These columns work based on a trust model: As a database designer, I must trust that all of my downstream consumers will follow the intended rules, remembering to update the columns every single time any transaction occurs. And of course I have to trust that they'll put in the correct values. The only alternative to trust is to put ugly and potentially slow triggers in place to make sure everything happened the right way.

    This situation needs to change, and this is especially prevalent now, thanks to…

    273 votes
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    6 comments  ·  Suggestions  ·  Flag idea as inappropriate…  ·  Admin →

    Upvotes: 249

    <=-=Oct 4 2016 2:15PM=-=>

    This is similar to my feedback located here: https://connect.microsoft.com/SQLServer/feedback/details/2769130/sql-2016-temporal-tables-with-triggers. The solution I suggest is similar to this, and could be used in many different cases developing using SQL server.

    <=-=Jan 10 2017 9:43AM=-=>

    I would love this too. The issue is that many/most applications don’t use Windows Auth in the connection to SQL Server (connection pooling issues, etc), so SQL can’t get the User information

    <=-=Jan 10 2017 9:51AM=-=>

    @Sanford

    Just to clarify, I am not asking for an “automatically store user name” feature. I’m asking for “automatically store whatever I want, based on whatever expression I provide.” So the fact that the user name may or may not be available is not really relevant.

    That said, there are plenty of workarounds for various situations. I imagine that if you’re using a shared connection, you can get some notion of “user” some other…

  5. Database Level Option For Storing Wait Stats

    SQL Server 2016 introduced Query Store, and SQL Server 2017 CU3 brought us aggregated wait stats at the query level. This is great information for data driven DBAs who need to be able to track plan changes over time, etc.

    With that in mind, an additional data collector for wait stats per database would be a great product feature, independent from Query Store data collection.

    We all know the limitations of the wait stats DMVs now:

    - They're cumulative over time
    - They're instance-wide
    - There's a lot of potential noise from wait types that aren't registered

    If you wanna…

    256 votes
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    under review  ·  1 comment  ·  Suggestions  ·  Flag idea as inappropriate…  ·  Admin →
  6. MAX/MIN as NON-aggregate function

    Please add the GREATEST/LEAST functions, just like in PostgreSQL/Oracle (with the same name for syntax-compatibility).
    SQL-Server lacks functions for MAX/MIN as NON-aggregate function.
    e.g. When I need the MAXIMUM of two values, or the minimum of two values (in columns, not rows).
    When the value is a lengthy expression, it sucks having to write it in a case expression.
    Also, the case-expression doesn't work for N > 2, and having to put it into a subselect-value-statement to use the aggregate functions as workaround affects readability severely (and thus maintainability).
    Also, since SQL-server user-defined functions are damn slow, and on top…

    237 votes
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    5 comments  ·  Suggestions  ·  Flag idea as inappropriate…  ·  Admin →

    Upvotes: 8

    <=-=Mar 5 2017 2:42PM=-=>

    Thanks for this idea. This is a valid requirement and I hope that it will get more votes. Currently we cannot confirm when it will be added, but it is in our backlog.

    <=-=May 22 2017 5:03AM=-=>

    would like it very much, particularly since you already have the CONCAT / GREATEST() a variable number of paramenters and does something with it…

    <=-=Jun 5 2017 12:31PM=-=>

    GREATEST / LEAST functions would be fantastic addition.

    <=-=Nov 14 2017 3:42PM=-=>

    The workarounds using CROSS APPLY or CASE expressions are difficult to manage and read. I’d love to see these implemented.

  7. Enable Query Store for collection on a read-only replica in an Availability Group

    Currently, Query Store can only be enabled for the read-write database in Availability Group. As many customers issue queries against the read-only replicas, capturing query and performance metrics for those queries would be beneficial for understanding the workload, troubleshooting performance issues, etc.

    237 votes
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    12 comments  ·  Suggestions  ·  Flag idea as inappropriate…  ·  Admin →
  8. Unlogged tables

    For data warehouse staging tables or session state tables, when I don't want to change my application, I want to just specify CREATE TABLE AS UNLOGGED similar to how PostgreSQL does it. This way, my transaction logs aren't bloated, the data doesn't get copied around, and my inserts/updates/deletes are faster.

    192 votes
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    3 comments  ·  Suggestions  ·  Flag idea as inappropriate…  ·  Admin →

    Upvotes: 127

    <=-=Jun 23 2015 8:37AM=-=>

    I’m the first to post a useful comment. This must make me special.

    Seriously though, this would be an excellent solution to having to create a new “scratchdb” to hold my interim ETL data. This would be a major plus in simplifying design of a high performance app.

    <=-=Jul 3 2015 5:04AM=-=>

    In 2014, memory optimized tables, and delayed durability can be used help mitigate these Issues. However neither of this are always completely viable solutions. Brent’s proposed solution is likely the simplest way to achieve this with the least amount of unwanted impact. It is important to note that other platforms implement similar functionality as well. Notably Oracle.

    <=-=Nov 29 2016 3:58PM=-=>

    There are so many good things about this suggestion. I am amazed that SQL does not have the capability to turn off logging for certain tables that you define as no…

  9. STRING_SPLIT is not feature complete

    The new string splitter function in SQL Server 2016 is a good addition but it needs an extra column, a ListOrder column which denotes the order of the splitted values.

    192 votes
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    8 comments  ·  Suggestions  ·  Flag idea as inappropriate…  ·  Admin →

    Upvotes: 72

    <=-=Mar 10 2016 11:26AM=-=>

    It’s a shame that this was submitted as just a “suggestion”. It should actually be listed as a “bug” because there’s only a comparatively small set of use cases where enumeration of the result set of elements is not important.

    <=-=Mar 11 2016 12:47PM=-=>

    I agree that an order column is required; one example use case is where two lists are passed in, and ordinal positions in one list correspond to positions in the other.

    <=-=Mar 11 2016 3:12PM=-=>

    Please see the related suggestion: STRING_SPLIT needs “RemoveEmptyEntries” option, like String.Split in .NET ( https://connect.microsoft.com/SQLServer/feedback/details/2462002/ ).

    <=-=Mar 12 2016 12:02PM=-=>

    This kind of function is primarily needed for de-serializing previously serialized arrays of values of any type format-able as text.
    I therefore recommend to have the result set of this function work excellent with this use-case.

    With de-serialized arrays there is a need to…

  10. Easier identification of Implicit Transactions

    Lots of ORMs let developers choose to enable implicit transactions, but there's no easy way to identity them without:

    1. Running Profiler
    2. Using the existing_connection XE session

    Though it's a SET option, it's not included in the plan XML where SET options are identified, nor is it in sys.dm_exec_plan_attributes or sys.query_context_settings.

    Using implicit transactions haphazardly can lead to some pretty nasty blocking chains. It should be much easier to identify when they're in use.

    Thanks!

    172 votes
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    under review  ·  8 comments  ·  Suggestions  ·  Flag idea as inappropriate…  ·  Admin →
  11. Use column aliases directly in SELECT clause

    It would be nice if queries like this were possible:

    SELECT
    A AS B
    ,C AS D
    ,D-B AS E
    FROM table

    In other words, use column directly in the SELECT clause where they are defined. Other database vendors have implemented this, so I assume it's not rocket science.

    Right now, we have to use subqueries just to define an extra calculation.

    162 votes
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  12. Explain why indexes were skipped

    Feature request: expose information about what indexes the optimizer considered while compiling an execution plan. Specifically, the index names and WHY the index was rejected for that particular query. This could potentially be included in per-operator execution plan properties (see attached mockup), an extended event target, or some other avenue.

    Reason: many developers and DBAs wonder why certain indexes on their tables aren't being chosen for specific queries. This gives them better tools to figure that out and make better use of the SQL Server product.

    I've blogged about this feature request in more detail here: http://joshthecoder.com/2018/06/21/feature-request-index-rejection-reasons.html

    This request was…

    148 votes
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    under review  ·  2 comments  ·  Suggestions  ·  Flag idea as inappropriate…  ·  Admin →
  13. Provide XEvents target directly into SQL Server table

    Provide a way to directly write XEvent output directly into a SQL Server database table in a same or different instance and same or different database.

    The goal being to be able to not have any events missed but have the entire stream captured to the table and also provide header information for when the capture table was created for easier management and deletion. Ideally there should be a purge task that could be activated to clean out such captures after X days.

    XEvents is a great and powerful tool.
    Customers should have an easier way to get it directly…

    120 votes
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    under review  ·  4 comments  ·  Suggestions  ·  Flag idea as inappropriate…  ·  Admin →
  14. SET STATISTICS IO should also show schema name for tables

    When you use schemas in your database, and you have the same table names in multiple schemas, it is not clear, which schema the table belongs too in the output of the SET STATISTICS IO. E.g. a table called Profile, or configuration in different schema is very common at our databases

    Today the output is just
    Table 'Profile'. Scan count 1, logical reads 123, physical reads 1, read-ahead reads 121, lob logical reads 0, lob physical reads 0, lob read-ahead reads 0.
    Table 'Profile'. Scan count 3, logical reads 13, physical reads 1, read-ahead reads 342, lob logical reads 0,…

    97 votes
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  15. T-SQL Common Table Expression "Materialize" Option

    T-SQL Common Table Expression "Materialize" Option

    I have run into a couple performance and results issues using Common Table Expressions (CTEs).

    The first case is where I coded a data retrieval as a single, large query with a CTE that is referenced multiple times in the query. The CTE has an expensive query. I was able to determine, via execution plans, etc., that the results of the CTE were being recalculated multiple times, resulting in slow execution. I rewrote the data retrieval as multiple steps where the query of the CTE was first executed into a table variable, and I…

    93 votes
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  16. In-Memory OLTP - allow removal of Filegroup for memory_optimized_data

    It should be possible to remove the memory_optimized_data Filegroup and files, if all in-memory tables and procedures have been deleted.

    Currently you cannot do this "by design", however this is a potential blocker to people using this technology due to the "no-going-back once it's enabled". It is now several years since Hekaton was first released - support for this feature is long overdue!

    At present you get errors such as:
    Cannot drop the last memory-optimized container
    The filegroup ... cannot be removed because it is not empty.

    91 votes
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    12 comments  ·  Suggestions  ·  Flag idea as inappropriate…  ·  Admin →

    Upvotes: 3

    <=-=Jan 8 2018 12:16PM=-=>

    Thanks for the suggestion.
    We’ll consider it for a future release.

    Are there specific limitations imposed when you have the filegroup, e.g., no database snapshot, that hold you back from creating the filegroup?
    Or is it only the feeling of not being able to turn back?


    Jos de Bruijn – Database Systems PM

  17. SQL Agent Job Chaining

    It would be a great feature to make SQL Agent Jobs hierarchical so that one (or more) job(s) can be dependent on another job allowing SQL Agent Jobs to be chained together.

    76 votes
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  18. AlwaysOn Availability Groups - Handling of Instance Level Objects

    In todays implementation when using AlwaysOn Availability Groups the DBA has to take care of the so called Instance Level Objects.
    Without this an (automatic) failover will fail so this is a very sensitive and important task.
    Instance Level Objects span a multitude of objects like logins, SSIS packages or other binaries, Agent Jobs/Schedules, Linked Servers, encryption keys and certificates.

    The recommendation provided by you is to create automated jobs to sync these items regularly.

    I request that you provide these 'syncing' functionality as part of the product out-of-the-box.
    Clearly you cannot know 3rd party dependencies nevertheless there are a…

    69 votes
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  19. In SQL Server Always oafter a failover, SQL Server keep the connections open without killing any session

    Hi Msft Team!
    I want to suggest one improvement to your sql server always on feature. Normally, once we perform failovers we need to ask app teams for maintenance windows... or in worst cases ,if this happens automatically, we need to discover the RCA of this because all the application or users connections had been terminated. Also many times that we had automatic failovers or perform failovers with long executions happening the secondary instance turned into recovery state because it was waiting for this session to finish to synchronize again. So, is it possible to add the capability for failovers…

    67 votes
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  20. "Call Stack"

    Provide DMV to provide the call stack of stored procedures, triggers, CLR functions etc prefferable in JSON format so it is parsable.

    As Erland Sommarskog says this is available but only in the "event Blocked Process Report:

    <executionStack>
    <frame line="17" stmtstart="1332" stmtend="2906" sqlhandle="0x03000d00399f00558c840601a29800000100000000000000"/>
    <frame line="1" sqlhandle="0x01000d00638e300f302e10ac000000000000000000000000"/>
    </executionStack>

    That is, here the call stack is available. Through the sqlhandle it is possible to retrieve
    the objectids of the calling procedures.

    If if it's available this way, it can't be too difficult to expose this in a DMV. Only exposing the
    sqlhandle would not match with my observation with permissions above, but…

    57 votes
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