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Presented by Steve Verschaeve.
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TechNet goes virtual
Implementing Full-Text in SQL Server
Steve Verschaeve
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Who am I?
[email protected]@sql_lazywriterhttp://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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What Can I Do with Full-Text Search?
Search terms Predicates Function
simple term CONTAINS and CONTAINSTABLE
FREETEXT and FREETEXTTABLE
prefix term CONTAINS and CONTAINSTABLE
generation term FREETEXT and FREETEXTTABLE
CONTAINS and CONTAINSTABLE
proximity term CONTAINSTABLE
thesaurus FREETEXT and FREETEXTTABLE
CONTAINS and CONTAINSTABLE
weighted term CONTAINSTABLE
• FTS Search Queries
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Architecture and components
• Full-Text engine• Filter Daemon host• Filter Daemon
Launcher• Full-Text index• Full-Text catalog
• Word breaker• Stemmer• Thesaurus• Filter• Population• 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 a feature
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Setup: Instance level
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Setup on database level
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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 DEV perspective
• 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 Languag
e 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
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Thank you
