The CONTAINS predicate is part of the WHERE clause, and supports searching for words and phrases in text columns. The CONTAINS predicate has features for matching words, matching inflectional forms of words, searching using wildcards, and searching using proximity. You can also apply weights in a CONTAINS predicate to set the importance of the columns where the search term is found. The CONTAINS predicate is better suited for "exact matches, in contrast to the FREETEXT predicate, which is better suited to finding documents containing combinations of the search words spread throughout the column.

Following is the basic syntax of the CONTAINS predicate:

…CONTAINS([<fulltext_column>,]'<contains_condition>'[,<LCID>])…

The fulltext column reference is optional. With it, you can specify a single column or a column group against which the CONTAINS predicate is tested. When the fulltext column is specified as "ALL" or "*", all indexed text properties are searched. Although the column is not required to be a text property, the results might be meaningless if the column is some other data type. The column name can be either a regular or delimited identifier, and you must separate it from the condition by a comma. If no fulltext column is specified, the Contents column, which is the body of the document, is used.

You can also specify the fulltext column reference with an asterisk (*), indicating all columns.

You can specify the search locale for the CONTAINS predicate. This instructs the search engine to use the appropriate word breaker, noise word list, inflectional forms, and sort order for the search query. To specify the locale, provide the Microsoft Windows standard locale identifier, also known as the LCID. For example, 1033 is the LCID for United States-English. Place the LCID as the last item inside the parentheses of the CONTAINS clause. For important information about searching and languages, see Using Localized Searches.

Note  The default search locale is the system default locale.

The contains condition portion must be enclosed in single quotation marks for single words or double quotation marks for phrases, and consists of one or more content search terms that are combined by using the logical operators AND or OR. You can use the optional unary operator NOT to negate the logical value of a content search term.

NOT can only occur after AND. You cannot use the NOT operator if there is only one match condition, or after the OR operator.

You can use parentheses to group and nest content search terms. The following table describes the logical operator precedence order.

Logical operators of the same type are associative, and there is no specified calculation order. For example, (A AND B) AND (C AND D) can be calculated (B AND C) AND (A AND D) with no change in the logical result.

The following table describes the types of content search terms.

…WHERE CONTAINS ('computer')

…WHERE CONTAINS
('"computer software"')
Or, to use a double quote mark:
… WHERE CONTAINS
('"computer ""science"" "')

…WHERE CONTAINS
('"compu*"')

Matches "computer", "computers",
"computation", and "compulsory"

…WHERE CONTAINS
('"computer monitor" AND
 "software program" AND
   "install component"')

… WHERE CONTAINS
 (' "computer" AND
  "software" AND
  "install" ' )

…WHERE CONTAINS
('"computer software install"')

…WHERE CONTAINS
('"computer" NEAR "software"')

…WHERE CONTAINS
('FORMSOF
 (INFLECTIONAL, "happy"))

Matches "happy", "happier",
"happiest", "happily", and so on.

…WHERE CONTAINS
('ISABOUT ( "computer" WEIGHT (0.5) ,
    "software" WEIGHT (2.0) ,
    "development" WEIGHT (10.0)
 ) RANKMETHOD INNER PRODUCT
')

This section includes the following topics:

• Noise Words and the CONTAINS Predicate
• Using Wildcards in the CONTAINS Predicate
• FORMSOF Term
• ISABOUT Term
• RANKMETHOD Term
• NEAR Term

Related Topics

Full-Text Predicates

Non-Full-Text Predicates

WHERE Clause