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SQL Extensions in SharePoint Search

Last modified: April 21, 2010

Applies to: SharePoint Server 2010

In this article
128-Character Identifier Names
Accent-insensitive Searching
NULL Predicate
Thesaurus

Microsoft SharePoint Server 2010 search supports SQL search syntax based on the SQL-92 and SQL-99 standards, and improves full-text, document-based searches in document-management or knowledge-management applications. Following are the improvements included in SharePoint Server search.

While SQL-92 and SQL-99 restrict column and other identifiers to 18 characters, SharePoint Server search supports 128-character column names.

In addition to searching that is not case-sensitive, SharePoint Server search supports searching that is not sensitive to accent.

Although full-text content indexing has no defined set of columns, queries can require that members of the result set do or do not have specified columns. It is not possible to differentiate between a document with the property but its value is NULL, and a document that does not have the property.

The thesaurus is a query-expansion search feature that allows you to type a phrase in a search query and receive results for related words. The thesaurus also enables you to affect search ranking by assigning weights to words.

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