TSQL in SQL Server 2012

TSQL in SQL Server 2012

• 1.
  Ing. Eduardo Castro,PhD ecastro@mswindowscr.org
• 2.
  References  What's newin SQL11 by Roger Noble  DAT303 SQL Server “Denali” High Availability: The next generation high availability solution  http://blogs.technet.com/b/dataplatforminsider/archive/2010/11/12/analysis- services-roadmap-for-sql-server-denali-and-beyond.aspx  http://prologika.com/CS/blogs/blog/archive/2010/11/15/bism-column-store.aspx  http://msdn.microsoft.com/en-us/library/ms174518.aspx  http://www.jenstirrup.com/2010/11/project-crescent-in-denali-bism-summary.html  http://blogs.msdn.com/b/ssdt/archive/2010/11/08/welcome.aspx  http://msdn.microsoft.com/en-us/data/gg427686  http://www.msteched.com/2010/Europe/DAT314  http://www.msteched.com/2010/NorthAmerica/BIE304  http://ecn.channel9.msdn.com/o9/te/Europe/2010/pptx/bin303.pptx  DAT303 SQL Server “Denali” High Availability
• 3.
  References • What’s new BOL - http://msdn.microsoft.com/en-us/library/bb500435(v=SQL.110).aspx • HADR - http://msdn.microsoft.com/en-us/library/ff877884(SQL.110).aspx & http://www.brentozar.com/archive/2010/11/sql-server-denali-database-mirroring-rocks/ • Atlanta - https://www.microsoftatlanta.com/ • T-SQL - Tobias Ternström • Sequence Generators - http://msdn.microsoft.com/en-us/library/ff878058(SQL.110).aspx & http://www.sergeyv.com/blog/archive/2010/11/09/sql-server-sequence-generators.aspx • Contained Databases - http://sqlblog.com/blogs/aaron_bertrand/archive/2010/11/16/sql-server-v-next- denali-contained-databases.aspx • Data Quality Services - Denise Draper • Column Store - http://download.microsoft.com/download/8/C/1/8C1CE06B-DE2F-40D1-9C5C- 3EE521C25CE9/Columnstore Indexes for Fast DW QP SQL Server 11.pdf • UDM & BISM - http://blogs.technet.com/b/dataplatforminsider/archive/2010/11/12/analysis-services- roadmap-for-sql-server-denali-and-beyond.aspx & http://prologika.com/CS/blogs/blog/archive/2010/11/13/business-intelligence-semantic-model-the- good-the-bad-and-the-ugly.aspx • SSIS - Matt Masson • SSIS Resolve References - http://www.sqlservercentral.com/blogs/dknight/archive/2010/11/15/ssis- denali-resolve-references.aspx • BISM vs SSAS - http://cwebbbi.wordpress.com/2010/11/14/pass-summit-day-2-the-aftermath/ • Crescent - http://www.jenstirrup.com/2010/11/project-crescent-when-is-it-best_1327.html
• 4.
  T-SQL Enhancements  RobustDiscovery of Result Set Metadata (replacing SET FMTONLY)  Improved Error Handling  Introduces the THROW, which allows us to re-throw an exception caught in an exception handling block  FileTable  Sequence Generators  Paging Construct  Support for UTF-16  Collations can be used with the data types: nchar, nvarchar, and sql_variant
• 5.
  T-SQL Result Sets  Suppose that you need to write code against SQL Server that uses result sets returned from stored procedures and dynamic batches  You need a guarantee that the result sets will have very specific metadata. if the shape of the result is different than what you expect, you need it to fail. http://www.sqlmag.com/blogs/puzzled-by-t-sql/tabid/1023/entryid/76198/Denali-T-SQL- at-a-Glance-EXECUTE-WITH-RESULT-SETS.aspx
• 6.
  T-SQL Result Sets You can specify the new option with the EXECUTE statement when executing a stored procedure or a dynamic batch EXECUTE <batch_or_proc> WITH <result_sets_option>;
• 7.
  T-SQL Result Sets RESULT SETS UNDEFINED  this is the default, meaning that never mind what’s the shape of the result sets  RESULT SETS NONE  you have a guarantee that no result set will be returned. If a result set is returned, an error is generated and the batch terminates
• 8.
  T-SQL Result Sets RESULT SETS <definition>  Specify the metadata of one or more result sets, and get a guarantee that the result sets and their number will match the metadata defined in the RESULT SETS clause
• 9.
  Demo
• 10.
  SQL Server DenaliTHROW command  The THROW command can be invoked in two main ways:  Without any parameters within the CATCH block of a TRY/CATCH construct. This will essentially re-throw the original error.  With parameters to throw a user defined error.
• 11.
   Demo http://www.sqlmag.com/blogs/puzzled-by-t-sql/tabid/1023/entryid/76190/Denali-T- SQL-at-a-Glance-THROW.aspx
• 12.
  T-SQL Enhancements FileTable FileTable • A merging of the FILESTREAM and HierarchyID • Can store files and folders • FileTables are accessed via windows share • Created table has predefined schema CREATE TABLE DocumentStore AS FileTable WITH FileTable_Directory Document FILESTREAM_ON FILESTREAMGroup1;
• 13.
  T-SQL Enhancements SequenceGenerator SEQUENCE • Generates a predicatble number of values • Global • Can be ascending, descending, minimum, maximum and cycle • Supports getting a range via sp_sequence_get_range
• 14.
  T-SQL Enhancements SequenceGenerator CREATE SEQUENCE ComWinSchema.IdSequence AS INT START WITH 10000 INCREMENT BY 1; GO INSERT INTO ComunidadMembers (MemberId, Name) VALUES (NEXT VALUE FOR ComWinSchema.IdSequence, 'Juan'); INSERT INTO ComunidadAdmin (AdminId, Name) VALUES (NEXT VALUE FOR ComWinSchema.IdSequence, ‘Juan');
• 15.
  T-SQL Enhancements Paging -- Before Denali WITH a AS ( SELECT ROW_NUMBER() OVER (ORDER BY Name) AS RowNum ... ) SELECT * FROM a WHERE a BETWEEN 11 AND 20 ORDER BY RN ORDER BY RowNum; http://www.davidhayden.com/blog/dave/archive/2005/12/30/2652.aspx
• 16.
  T-SQL Enhancements Paging --In Denali SELECT... ORDER BY ... OFFSET 10 ROWS FETCH NEXT 10 ROWS ONLY  Not a performance improvement, there for ease of use  Perf is similar to using ROW_NUMBER
• 17.
  Demo
• 18.
  VertiPaq  VertiPaq StorageEngine  Lots of cheap RAM => In-memory storage  Column-oriented data compression > 10:1  Support for column-oriented DAX queries
• 19.
  Column Store Indexes •PowerPivot in SQL Server • An index is created across columns instead of rows • Can give a massive query performance increase • Read only • Reduced IO • Compressed • Not a NoSQL implementation / alternative
• 20.
  Denali Columnstore Indexes Denali introduces a new type of index called the columnstore.  This new type of index is built up on the values across columns instead of traditional row based indexes.  As data tends to be less unique across a column it allows the columnstore to efficiently compress and store data.
• 21.
  Denali Columnstore Indexes The columnstore is currently read-only, however it can be updated via dropping and recreating the index, or switching in a partition.  Due to the ability to compress and keep the index in memory the Columnstore can give massive (10x, 100x, 1000x…) increase in speed to warehouse queries  Not all queries can benefit and some can regress. In general typical star join queries found in a Data Warehouse when only a portion of the columns are selected will get the biggest benefit.
• 22.
  Denali Columnstore Indexes  http://download.microsoft.com/download/8/C/1/8 C1CE06B-DE2F-40D1-9C5C- 3EE521C25CE9/Columnstore%20Indexes%20for%20Fa st%20DW%20QP%20SQL%20Server%2011.pdf
• 23.
  Column Store Index http://download.microsoft.com/download/8/C/1/8C1CE06B-DE2F-40D1-9C5C-3EE521C25CE9/ Columnstore%20Indexes%20for%20Fast%20DW%20QP%20SQL%20Server%2011.pdf