Merge branch 'master' of https://github.com/ktaranov/sqlserver-kit

Author: ktaranov

SQL Server Trace Flag.md

@@ -1,12 +1,12 @@
 # Microsoft SQL Server Trace Flags
-Complete list of Microsoft SQL Server trace flags (**590** trace flags)
+Complete list of Microsoft SQL Server trace flags (**591** trace flags)
 
-**REMEMBER: Be extremely careful with trace flags, test in your test environment first. And consult professionals first if you are the slightest uncertain about the effects of your changes.**
+⚠ **REMEMBER: Be extremely careful with trace flags, test in your test environment first. And consult professionals first if you are the slightest uncertain about the effects of your changes.**
 
-**Some trace flags were introduced in specific SQL Server versions.
+⚠ **Some trace flags were introduced in specific SQL Server versions.
 For more information on the applicable version, see the Microsoft Support article associated with a specific trace flag.**
 
-**Trace flag behavior may not be supported in future releases of SQL Server.**
+⚠ **Trace flag behavior may not be supported in future releases of SQL Server.**
 
 Headers:
  - [Unknown trace flags](#unknown-trace-flags")
@@ -64,6 +64,8 @@ A lowercase "t" is accepted by SQL Server, but this sets other internal trace fl
  - Scott Caldwell ([b](https://blog.rdx.com/) | [t](https://twitter.com/sqldroid))
  - Mike Fal ([b](http://www.mikefal.net) | [t](https://twitter.com/Mike_Fal))
  - Prince Kumar Rastogi ([b](http://www.sqlservergeeks.com/) | [t](https://twitter.com/princerastogi2))
+ - Kendra Little ([b](http://www.littlekendra.com/) | [t](https://twitter.com/Kendra_Little))
+ - Slava Oks ([t](https://twitter.com/slava_oks/))
 
 
 <a id="unknown-trace-flags"></a>
@@ -99,7 +101,7 @@ Trace Flags are settings that in some way or another alters the behavior of vari
 
 <a id="how-do-i-turn-trace-flags-on-and-off"></a>
 ## How do I turn Trace Flags on and off?
- - You can use the [DBCC TRACEON](https://docs.microsoft.com/en-us/sql/t-sql/database-console-commands/dbcc-traceon-transact-sql "Official Microsoft Docs DBCC TRACEON Article") and [DBCC TRACEOFF](https://docs.microsoft.com/en-us/sql/t-sql/database-console-commands/dbcc-traceoff-transact-sql "Official Microsoft Docs DBCC TRACEOFF Article") commands
+ - You can use the [DBCC TRACEON] and [DBCC TRACEOFF] commands
  - You can use the [-T option](https://docs.microsoft.com/en-us/sql/database-engine/configure-windows/database-engine-service-startup-options "Official Microsoft Docs Database Engine Service Startup Options Article") in the startup configuration for the SQL Server Service.
  **When specifying a trace flag with the `-T` option, use an uppercase `"T"` to pass the trace flag number. A lowercase `"t"` is accepted by SQL Server, but this sets other internal trace flags that are required only by SQL Server support engineers. (Parameters specified in the Control Panel startup window are not read.)**
  - You can also use the hint [QUERYTRACEON](https://support.microsoft.com/help/2801413 "Official QUERYTRACEON KB Article") in your queries: **&lt;querytraceon_hint ::= {QUERYTRACEON trace_flag_number}>**
@@ -230,13 +232,13 @@ Use this trace flag if SQL Server is experiencing high number of [QDS_LOADDB](ht
 
 <a id="trace-flags-list"></a>
 ## Trace Flags List
-Summary: **588 trace flags**
+Summary: **591 trace flags**
 
 
 <a id="-1"></a>
 #### Trace Flag: -1
 Function: Sets trace flags for all client connections, rather than for a single client connection.
-Because trace flags set using the -T command-line option automatically apply to all connections, this trace flag is used only when setting trace flags using DBCC TRACEON and DBCC TRACEOFF.<br />
+Because trace flags set using the -T command-line option automatically apply to all connections, this trace flag is used only when setting trace flags using [DBCC TRACEON] and [DBCC TRACEOFF].<br />
 Link: http://www.sql-server-performance.com/2002/traceflags/
 
 
@@ -887,6 +889,15 @@ Link: [New Undocumented Trace Flags]<br />
 Scope: ?
 
 
+<a id="876"></a>
+#### Trace Flag: 876
+**Undocumented trace flag**<br />
+Function: Turns 8k page allocations for Column Store segments into 2MB instead.<br />
+Link: https://twitter.com/slava_oks/status/1044257034361757696<br />
+Link: https://github.com/ktaranov/sqlserver-kit/issues/151<br />
+Scope: ?
+
+
 <a id="888"></a>
 **Undocumented trace flag**<br />
 #### Trace Flag: 888
@@ -924,7 +935,8 @@ Link: https://blogs.msdn.microsoft.com/arvindsh/2014/02/24/tracking-tempdb-inter
 <a id="1117"></a>
 #### Trace Flag: 1117
 Function: When a file in the filegroup meets the autogrow threshold, all files in the filegroup grow.<br />
-**Note: Beginning with SQL Server 2016 this behavior is controlled by the AUTOGROW_SINGLE_FILE and AUTOGROW_ALL_FILES option of ALTER DATABASE, and trace flag 1117 has no affect. For more information, see ALTER DATABASE File and Filegroup Options (Transact-SQL).**<br />
+**Note: Beginning with SQL Server 2016 this behavior is controlled by the AUTOGROW_SINGLE_FILE and AUTOGROW_ALL_FILES option of ALTER DATABASE, and trace flag 1117 has no affect.
+For more information, see [ALTER DATABASE File and Filegroup Options (Transact-SQL)](https://docs.microsoft.com/en-us/sql/t-sql/statements/alter-database-transact-sql-file-and-filegroup-options).**<br />
 Link: https://www.littlekendra.com/2017/01/03/parallelism-and-tempdb-data-file-usage-in-sql-server/<br />
 Link: [SQL Server 2016 : Getting tempdb a little more right]<br />
 Link: [Docs Trace Flags]<br />
@@ -1000,7 +1012,7 @@ Link: None
 Function: Prints detailed lock information as every request for a lock is made (the process ID and type of lock requested)<br />
 Link: [TECHNET List Of SQL Server Trace Flags]<br />
 Link: https://blogs.msdn.microsoft.com/sqlserverstorageengine/2008/03/30/tempdb-table-variable-vs-local-temporary-table<br />
-Link: https://support.microsoft.com/help/169960/inf-analyzing-and-avoiding-deadlocks-in-sql-server<br />
+Link: [KB169960]<br />
 Link: [Important Trace Flags That Every DBA Should Know]<br />
 Scope: ?
 
@@ -1031,13 +1043,13 @@ Link: https://support.microsoft.com/help/832524/sql-server-technical-bulletin---
 <a id="1206"></a>
 #### Trace Flag: 1206
 Function: Used to complement flag 1204 by displaying other locks held by deadlock parties<br />
-Link: https://support.microsoft.com/help/169960/inf-analyzing-and-avoiding-deadlocks-in-sql-server
+Link: [KB169960]
 
 
 <a id="1208"></a>
 #### Trace Flag: 1208
 Function: KB: “Prints the host name and program name supplied by the client. This can help identify a client involved in a deadlock, assuming the client specifies a unique value for each connection.”<br />
-Link: https://support.microsoft.com/help/169960/inf-analyzing-and-avoiding-deadlocks-in-sql-server
+Link: [KB169960]
 
 
 <a id="1211"></a>
@@ -3639,7 +3651,8 @@ We can use this trace flag to troubleshooting the query performance without chan
 Link: http://download.microsoft.com/download/6/e/5/6e52bf39-0519-42b7-b806-c32905f4a066/eim_perf_flowchart_final.pdf<br />
 Link: http://sqlblog.com/blogs/kalen_delaney/archive/2008/02/26/lost-without-a-trace.aspx<br />
 Link: http://www.sqlservergeeks.com/sql-server-trace-flag-8602/<br />
-Scope: global only
+Scope: global only<br />
+Demo: https://github.com/ktaranov/sqlserver-kit/blob/master/Scripts/Trace_Flag/Trace_Flag_8602.sql
 
 
 <a id="8605"></a>
@@ -4882,6 +4895,8 @@ Scope: ?
 
 
 [Query Store Trace Flags]: https://www.sqlskills.com/blogs/erin/query-store-trace-flags/
+[DBCC TRACEON]:https://docs.microsoft.com/en-us/sql/t-sql/database-console-commands/dbcc-traceon-transact-sql
+[DBCC TRACEOFF]:https://docs.microsoft.com/en-us/sql/t-sql/database-console-commands/dbcc-traceoff-transact-sql
 [Docs Trace Flags]: https://docs.microsoft.com/en-us/sql/t-sql/database-console-commands/dbcc-traceon-trace-flags-transact-sql
 [DBCC CHECKDB]: https://docs.microsoft.com/en-us/sql/t-sql/database-console-commands/dbcc-checkdb-transact-sql
 [DBCC CHECKTABLE]: https://docs.microsoft.com/en-us/sql/t-sql/database-console-commands/dbcc-checktable-transact-sql
@@ -4937,3 +4952,4 @@ Scope: ?
 [DAC]:https://docs.microsoft.com/en-us/sql/database-engine/configure-windows/diagnostic-connection-for-database-administrators
 [DBCC SHOW_STATISTICS]:https://docs.microsoft.com/en-us/sql/t-sql/database-console-commands/dbcc-show-statistics-transact-sql
 [ALTER DATABASE SCOPED CONFIGURATION (Transact-SQL)]:https://docs.microsoft.com/en-us/sql/t-sql/statements/alter-database-scoped-configuration-transact-sql
+[KB169960]:https://web.archive.org/web/20150111103047/http://support.microsoft.com:80/kb/169960

SSMS/README.md

@@ -25,7 +25,11 @@ Additionally, SSMS 17.x can be installed side-by-side with SSMS 16.X or SQL Serv
 
 
 ## Supported Operating systems
-This release of SSMS supports the following platforms when used with the latest available service pack: Windows 10, Windows 8, Windows 8.1, Windows 7 (SP1), Windows Server 2016, Windows Server 2012 (64-bit), Windows Server 2012 R2 (64-bit), Windows Server 2008 R2 (64-bit)
+This release of **SSMS 17.x Version** supports the following platforms when used with the latest available service pack: Windows 10, Windows 8, Windows 8.1, Windows 7 (SP1), Windows Server 2016, Windows Server 2012 (64-bit), Windows Server 2012 R2 (64-bit), Windows Server 2008 R2 (64-bit)
+
+SSMS 18.x is not supported on Windows 8. Windows 10 / Windows Server 2016 requires version 1607 (10.0.14393) or later:
+Due to the new dependency on NetFx 4.7.2, SSMS 18.0 does not install on Windows 8, older versions of Windows 10, and Windows Server 2016. SSMS setup will block on those operating systems. Windows 8.1 is still supported.
+
 
 ### Note
 SSMS 17.X is based on the Visual Studio 2015 Isolated shell, which was released before Windows Server 2016.
@@ -34,9 +38,24 @@ Because of this, we do not anticipate that SSMS with all latest updates applied)
 Customers are advised to contact support, should they encounter any issues with SSMS on Windows Server 2016.
 Support will then work with customers to determine if the issue is with SSMS or Visual Studio or with Windows compatibility, and route the issue appropriately.
 
+SSMS 18.x is based on the new Visual Studio 2017 Isolated Shell: The new shell unlocks all the accessibility fixes that went in to both SSMS and Visual Studio.
+
 
 ## Available Languages
-SQL Server Management Studio for another languages:
+**SQL Server Management Studio 18.0 (preview 4)**:
+ [Chinese (People's Republic of China)](https://go.microsoft.com/fwlink/?linkid=2014662&clcid=0x804) |
+ [Chinese (Taiwan)](https://go.microsoft.com/fwlink/?linkid=2014662&clcid=0x404) |
+ [English (United States)](https://go.microsoft.com/fwlink/?linkid=2014662&clcid=0x409) |
+ [French](https://go.microsoft.com/fwlink/?linkid=2014662&clcid=0x40c) |
+ [German](https://go.microsoft.com/fwlink/?linkid=2014662&clcid=0x407) |
+ [Italian](https://go.microsoft.com/fwlink/?linkid=2014662&clcid=0x410) |
+ [Japanese](https://go.microsoft.com/fwlink/?linkid=2014662&clcid=0x411) |
+ [Korean](https://go.microsoft.com/fwlink/?linkid=2014662&clcid=0x412) |
+ [Portuguese (Brazil)](https://go.microsoft.com/fwlink/?linkid=2014662&clcid=0x416) |
+ [Russian](https://go.microsoft.com/fwlink/?linkid=2014662&clcid=0x419) |
+ [Spanish](https://go.microsoft.com/fwlink/?linkid=2014662&clcid=0x40a)
+
+**SQL Server Management Studio 17.9** for another languages:
  [Chinese (People's Republic of China)](https://go.microsoft.com/fwlink/?linkid=2014306&clcid=0x804) |
  [Chinese (Taiwan)](https://go.microsoft.com/fwlink/?linkid=2014306&clcid=0x404) |
  [English (United States)](https://go.microsoft.com/fwlink/?linkid=2014306&clcid=0x409)
@@ -49,7 +68,7 @@ SQL Server Management Studio for another languages:
  [Russian](https://go.microsoft.com/fwlink/?linkid=2014306&clcid=0x419) |
  [Spanish](https://go.microsoft.com/fwlink/?linkid=2014306&clcid=0x40a)
 
-SQL Server Management Studio 17.9 Upgrade Package (upgrades 17.x to 17.9):
+**SQL Server Management Studio 17.9 Upgrade Package** (upgrades 17.x to 17.9):
  [Chinese (People's Republic of China)](https://go.microsoft.com/fwlink/?linkid=2014215&clcid=0x804) |
  [Chinese (Taiwan)](https://go.microsoft.com/fwlink/?linkid=2014215&clcid=0x404) |
  [English (United States)](https://go.microsoft.com/fwlink/?linkid=2014215&clcid=0x409) |
@@ -64,37 +83,42 @@ SQL Server Management Studio 17.9 Upgrade Package (upgrades 17.x to 17.9):
 
 
 ## SQL Server Management Studio Download Links and Release Info
-
-| Version/Download Link | Build | Release Date | Size, Mb |
-|----------------------------------|---------------|--------------|---------:|
-| [17.9 Release] **Latest** | 14.0.17285.0 | 2018-09-04 | 807 |
-| [17.8.1 Release] | 14.0.17277.0 | 2018-06-26 | 806 |
-| [17.8 Release] **Deprecated** | 14.0.17276.0 | 2018-06-21 | 806 |
-| [17.7 Release] | 14.0.17254.0 | 2018-05-09 | 803 |
-| [17.6 Release] | 14.0.17230.0 | 2018-03-20 | 802 |
-| [17.5 Release] | 14.0.17224.0 | 2018-02-15 | 802 |
-| [17.4 Release] | 14.0.17213.0 | 2017-12-07 | 802 |
-| [17.3 Release] | 14.0.17199.0 | 2017-10-09 | 801 |
-| [17.2 Release] | 14.0.17177.0 | 2017-08-07 | 819 |
-| [17.1 Release] | 14.0.17119.0 | 2017-05-24 | 784 |
-| [17.0 Release] | 14.0.17099.0 | 2017-04-25 | 729 |
-| [17.0 RC3 Release] | 14.0.17028.0 | 2017-03-09 | 677 |
-| [17.0 RC2 Release] | 14.0.16150.0 | 2017-02-01 | 682 |
-| [17.0 RC1 Release] | 14.0.16000.64 | 2016-11-16 | 687 |
-| [16.5.3 Release] | 13.0.16106.4 | 2017-01-26 | 898 |
-| 16.5.2 Release **Deprecated** | 13.0.16105.4 | 2017-01-18 | 898 |
-| [16.5.1 Release] | 13.0.16100.1 | 2016-12-05 | 894 |
-| [16.5 Release] | 13.0.16000.28 | 2016-10-26 | 894 |
-| [16.4.1 Release] | 13.0.15900.1 | 2016-09-23 | 894 |
-| 16.4 Release **Deprecated** | 13.0.15800.18 | 2016-09-20 | |
-| [16.3 Release] | 13.0.15700.28 | 2016-08-15 | 806 |
-| [July 2016 Hotfix Update] | 13.0.15600.2 | 2016-07-13 | 825 |
-| July 2016 Release **Deprecated** | 13.0.15500.91 | 2016-07-01 | |
-| [June 2016 Release] | 13.0.15000.23 | 2016-06-01 | 825 |
-| [SQL Server 2014 SP1] | 12.0.4100.1 | 2015-05-14 | 815 |
-| [SQL Server 2012 SP3] | 11.0.6020.0 | 2015-11-21 | 964 |
-| [SQL Server 2008 R2] | 10.50.4000 | 2012-07-02 | 161 |
-
+ - **GA** - General Availability
+ - **PP** - Public Preview
+ - Size in Megabytes for English version
+
+| Version/Download Link | Build | Release Date | Size, Mb |
+|----------------------------------------|---------------|--------------|---------:|
+| [18.0 Preview 4 Release] **Latest PP** | 14.0.18040.0 | 2018-09-24 | 456 |
+| [17.9 Release] **Latest GA** | 14.0.17285.0 | 2018-09-04 | 807 |
+| [17.8.1 Release] | 14.0.17277.0 | 2018-06-26 | 806 |
+| [17.8 Release] **Deprecated** | 14.0.17276.0 | 2018-06-21 | 806 |
+| [17.7 Release] | 14.0.17254.0 | 2018-05-09 | 803 |
+| [17.6 Release] | 14.0.17230.0 | 2018-03-20 | 802 |
+| [17.5 Release] | 14.0.17224.0 | 2018-02-15 | 802 |
+| [17.4 Release] | 14.0.17213.0 | 2017-12-07 | 802 |
+| [17.3 Release] | 14.0.17199.0 | 2017-10-09 | 801 |
+| [17.2 Release] | 14.0.17177.0 | 2017-08-07 | 819 |
+| [17.1 Release] | 14.0.17119.0 | 2017-05-24 | 784 |
+| [17.0 Release] | 14.0.17099.0 | 2017-04-25 | 729 |
+| [17.0 RC3 Release] | 14.0.17028.0 | 2017-03-09 | 677 |
+| [17.0 RC2 Release] | 14.0.16150.0 | 2017-02-01 | 682 |
+| [17.0 RC1 Release] | 14.0.16000.64 | 2016-11-16 | 687 |
+| [16.5.3 Release] | 13.0.16106.4 | 2017-01-26 | 898 |
+| 16.5.2 Release **Deprecated** | 13.0.16105.4 | 2017-01-18 | 898 |
+| [16.5.1 Release] | 13.0.16100.1 | 2016-12-05 | 894 |
+| [16.5 Release] | 13.0.16000.28 | 2016-10-26 | 894 |
+| [16.4.1 Release] | 13.0.15900.1 | 2016-09-23 | 894 |
+| 16.4 Release **Deprecated** | 13.0.15800.18 | 2016-09-20 | |
+| [16.3 Release] | 13.0.15700.28 | 2016-08-15 | 806 |
+| [July 2016 Hotfix Update] | 13.0.15600.2 | 2016-07-13 | 825 |
+| July 2016 Release **Deprecated** | 13.0.15500.91 | 2016-07-01 | |
+| [June 2016 Release] | 13.0.15000.23 | 2016-06-01 | 825 |
+| [SQL Server 2014 SP1] | 12.0.4100.1 | 2015-05-14 | 815 |
+| [SQL Server 2012 SP3] | 11.0.6020.0 | 2015-11-21 | 964 |
+| [SQL Server 2008 R2] | 10.50.4000 | 2012-07-02 | 161 |
+
+[18.0 Preview 4 Release]:https://go.microsoft.com/fwlink/?linkid=2014662
 [17.9 Release]:https://go.microsoft.com/fwlink/?linkid=2014306
 [17.8.1 Release]:https://go.microsoft.com/fwlink/?linkid=875802
 [17.8 Release]:https://go.microsoft.com/fwlink/?linkid=875673

Scripts/Trace_Flag/Trace_Flag_8602.sql

@@ -0,0 +1,76 @@
+/*
+Trace Flag Demo: 8602
+Function: This trace flag is used to ignore all the index hints specified in query or stored procedure.
+We can use this trace flag to troubleshooting the query performance without changing index hints.
+SQL Server Version: 2008-2017
+Information link: https://github.com/ktaranov/sqlserver-kit/blob/master/SQL%20Server%20Trace%20Flag.md#8602
+*/
+
+USE master
+GO
+
+IF DB_ID(N'Trace8602') IS NOT NULL
+BEGIN
+ ALTER DATABASE Trace8602 SET SINGLE_USER WITH ROLLBACK IMMEDIATE;
+ DROP DATABASE Trace8602;
+END;
+GO
+
+CREATE DATABASE Trace8602;
+GO
+
+USE Trace8602;
+GO
+
+CREATE TABLE xttrace8602
+ (
+ id INT identity(1, 1) PRIMARY KEY
+ , bal INT
+ , name VARCHAR(100)
+ );
+GO
+CREATE NONCLUSTERED INDEX IX_xttrace8602_bal_name ON xttrace8602
+ (
+ bal
+ , name
+ );
+CREATE NONCLUSTERED INDEX IX_xttrace8602_bal ON xttrace8602(bal) ;
+GO
+
+INSERT INTO xttrace8602(bal, name)
+SELECT TOP(10000) RAND() * 786 AS bal
+ , 'SQLServerGeeks.com' AS name
+ FROM sys.all_objects
+ CROSS JOIN sys.all_columns;
+GO
+
+CREATE PROC usp_First
+AS
+ SELECT id
+ , name
+ FROM xttrace8602 AS tf WITH(INDEX(IX_xttrace8602_bal))
+ WHERE bal < 100;
+GO
+
+/*Ctrl+M Include Actual Execution Plan in SSMS*/
+EXEC usp_First;
+GO
+/*Enable Trace flag*/
+DBCC TRACEON(8602, -1);
+GO
+/*Clear procedure cache*/
+DECLARE @planHandle VARBINARY(64);
+SELECT @planHandle = cp.plan_handle
+ FROM sys.dm_exec_cached_plans AS cp
+ CROSS APPLY sys.dm_exec_sql_text(cp.plan_handle) AS st
+ WHERE st.[text] LIKE '%CREATE PROC usp_First%' AND objtype = 'Proc';
+PRINT(@planHandle);
+IF @planHandle IS NOT NULL DBCC FREEPROCCACHE (@planHandle);
+GO
+
+EXEC usp_First;
+GO
+
+/*Disable Trace flag*/
+DBCC TRACEOff(8602,-1)
+GO