BARBARIN DAVIDSQL Server Senior ConsultantPragmantic

SQL Server Denali :New development features

David BARBARIN david.barbarin@pragmantic.com

SQL Server Senior Consultant at Pragmantic SA Collaborative solutions Business solutions Data Management and Business Intelligence

Unstructured data and FILETABLE

The FileTable feature builds on top of the SQL Server FILESTREAM technology

Represent a hierarchy of folders and file storage

Non transactional access

Can be used by Windows applications without changes

FILETABLE

A row in a FileTable contains :

A FILESTREAM column for stream data and a file_id (GUID) identifier. (NULL if a directory is concerned)

Both path_locator and parent_path_locator columns

10 file attributes such as created date and modified date that are useful with file I/O APIs

A type column that supports full-text search and semantic search over files and documents.

A FileTable enforces certain system-defined constraints and triggers to maintain file namespace semantics.

When the database is configured for non-transactional access, directory and files can be access by the filestream network share name

FILETABLE

FileTable

demo…

FullText search and semantic search

Semantic search builds upon the existing full-text search feature in SQL Server but enables new scenarios that extend beyond syntactical keyword searches

Full-text search lets you query the words in a document

Semantic search lets you query the meaning of the document

Semantic search

Before you can use Semantic Search, you have to install, attach, and register the Semantic database. This database contains the statistical language models required by semantic search

Don’t forget to install the Latest Filters to allow indexing the concerned documents

Semantic search

Property Search is possible in the documents. The result depends directly on the I-filters.

Customizable NEAR (CONTAINS(column_name, 'NEAR((John, Smith),2)') )

Update of all word breakers and stemmers used by Full-Text Search except to Korean language

FullText search

Meta Data Discovery

SET FMT ONLY will be replaced by

sys.sp_describe_first_result_setsys.dm_exec_describe_first_result_setsys.dm_exec_describe_first_result_set_for_object

Meta Data Discovery

Metada Discovery

demo…

Ad-hoc Query Paging

Paging still exists in SQL Server by using different methods

Implementation of paging like “MySQL” simplifies the search of a range of values

ORDER BY clause has been enhanced with OFFSET and FETCH NEXT … ROWS ONLY options

Ad-hoc Query Paging

ORDER BY, OFFSET and FETCH

demo…

Execute statement enhanced

The EXECUTE statement can now specify the metadata returned from the statement by using the WITH RESULT SETS argument

Allow the encapsulation of a stored procedure.

Can be a contract between a stored procedure and the Direct Access Layer of an application

Change in the stored procedure doesn’t not imply change on the DAL

Select data doesn’t require anymore a temp table

Conversion with SSIS source and destination is simplier

Execute statement

Execute statement

demo…

Sequence objects

Sequences are now possible with SQL Server 2012.

A Sequence object is a user-defined schema-bound object. It operates similar to an identity column, but sequence numbers are not restricted to use in a single table

The last-used value is stored in memory

CREATE SEQUENCE and NEXT VALUE FOR

Sequences

Sequences

demo…

THROW statement

Like Csharp or other language THROW raises an exception and transfers execution to a CATCH block of a TRY…CATCH construct

THROW does not need a predefined message in sys.messages to work unlike RAISERROR

It's not possible to redefine the severity by THROW (always 16) unlike RAISERROR

Throw statement

Throw statement

demo…

T-SQL enhancements

Conversion functions

PARSETRY_PARSETRY_CONVERT

T-SQL enhancements

Date and time functions

DATEFROMPARTSDATETIME2FROMPARTSDATETIMEFROMPARTSDATETIMEOFFSETFROMPARTSSMALLDATETIMEFROMPARTSTIMEFROMPARTSEOMONTH

T-SQL enhancements

Logical functions

CHOOSEIIF

T-SQL enhancements

String functions

CONCATFORMAT

T-SQL enhancements

Logarithm computing :

SQL Server supported only two functions that compute logarithms: LOG (for natural logarithm) and LOG10 (for logarithm with a base of 10).

LOG function is modified with a second optional option : base that allows to compute a LOG with an another base

SELECT LOG(256, 2) equivalent to SELECT LOG(256) / LOG(2);

T-SQL enhancements

New Analytic Functions are added

CUM_DIST()PERCENTILE_CONT() PERCENTILE_DISC()PERCENTILE_RANK()FIRST_VALUE()LAST_VALUE()LEAD()LAG()

T-SQL enhancements

T-SQL enhancements

demo…

UTF-16 Supplementary Characters (SC) Collations

SC collations can improve searching and sorting by functions that use the Unicode types nchar and nvarchar

UTF16 Support Collations

New methods for geometry and geography data types that work with circular arc segments

New static aggregate methods for geometry data type and geography data type

Spatial types

SQL Server Developer Tools

Juneau provides a unified set of tools that combines :

the projects found in SQL Server Business Intelligence Design Studio - including projects of Integration Services, Analysis and Reporting

the project database SQL Server.

SSDT (Juneau Project)

SQL Server Developer Tools

demo…

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