Presented by Steve Verschaeve.

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Implementing Full-Text in
SQL Server
Steve Verschaeve
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Who am I?
Blog.steveverschaeve.be
steve@sqlug.be
@sql_lazywriter
http://www.microsoft.com/belux/meet/
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Agenda
• History and Editions
• What Can I Do with Full-Text Search?
• Architecture and components
• Linguistics
• Setup
• FTS from a DBA perspective
• FTS from a DEV perspective
• Upgrade from earlier versions
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History and Editions
• Since version 7.0
• Major improvement in version 2008
• Supported editions
– Enterprise
– Business Intelligence
– Standard
– Web
– Express with Advanced Services
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5. Click to edit Master titleFull-Text Search?
What Can I Do with style
• FTS Search Queries
Search terms Predicates Function
simple term CONTAINS and FREETEXT and
CONTAINSTABLE FREETEXTTABLE
prefix term CONTAINS and
CONTAINSTABLE
generation term FREETEXT and CONTAINS and
FREETEXTTABLE CONTAINSTABLE
proximity term CONTAINSTABLE
thesaurus FREETEXT and CONTAINS and
FREETEXTTABLE CONTAINSTABLE
weighted term CONTAINSTABLE
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Architecture and components
• Full-Text engine • Word breaker
• Filter Daemon host • Stemmer
• Filter Daemon • Thesaurus
Launcher • Filter
• Full-Text index • Population
• Full-Text catalog • Stopword
• Stoplist
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Linguistics
• 50 languages (sys.fulltext_languages)
• Each col is associated with LCID
– Eg: LCID 1033 (U.S. English)
– Eg: LCID 2057 (British English)
• Language specific components:
– Word breakers and stemmers
– Stoplists
– Thesaurus files
– Filters
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Setup:Install as title style
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Setup: Instance title
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Setup on database style
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Demo: FTS from a DBA perspective
• Managing
– Catalogs and Indexes
– Stoplists
– Filegroups
– Crawling
– Monitoring
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Demo: FTS from a style
• Writing Full-Text Queries using
– CONTAINS
– CONTAINSTABLE
– FREETEXT
– FREETEXTABLE
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Upgrade from earlier versions
• No discontinued full-text search features,
some have been deprecated
• Breaking Changes
– Collation Changed for name Column in
sys.fulltext_languages
• Behavior Changes
– New word breakers and stemmers
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Upgrade from earlier versions
• Upgrade paths
– In-place upgrade
– Detach & attach database
– Backup and restore database
– Copy Database Wizard
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Upgrade from earlier versions
• Upgrade options
– Import indexed
data
– Reset catalogs
– Full population
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Upgrade from previous versions
• From 2005
– Mismatches between query and full-text index
• Rebuild full-text catalog
• Full population of full-text index
– Noise words replaced by stopwords
– Modified noise words in 2005 are lost
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Important URLs
• Supported Forms of Query Terms
• SQL Server Full Text Search Language
Features (Hillary Cotter)
• SQL Server Full Text Search Language
Features, Part 2 (Hillary Cotter)
• Deprecated Full-Text Search Features in
SQL Server 2012
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Important URLs
• TechNet Support Forums
• Integrated Full-Text Search (OLTP)---a
Technical Reference Guide for Designing
Mission-Critical OLTP Solutions
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Q&A
steve@sqlug.be
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Thank you
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