Term and phrase search

When performing a full text search for a list of terms, the order of terms is not important unless they are within a phrase. If you put the terms within a phrase, the database server looks for those terms in exactly the same order, and same relative positions, in which you specified them.

When performing a term or phrase search, if terms are dropped from the query because they exceed term length settings or because they are in the stoplist, you can get back a different number of rows than you expect. This is because removing the terms from the query is equivalent to changing your search criteria. For example, if you search for the phrase '"grown cotton"' and grown is in the stoplist, you get every indexed row containing cotton.

You can search for the terms that are considered keywords of the CONTAINS clause grammar, as long as they are within phrases.

Term searching

In the sample database, a text index called MarketingTextIndex has been built on the Description column of the MarketingInformation table. The following statement queries the MarketingInformation.Description column and returns the rows where the value in the Description column contains the term cotton.

SELECT ID, Description 
   FROM MarketingInformation
   WHERE CONTAINS ( Description, 'cotton' );

ID	Description
906	`<html><head><meta http-equiv=Content-Type content="text/html; charset=windows-1252"><title>Visor</title></head><body lang=EN-US><p><span style='font-size:10.0pt;font-family:Arial'>Lightweight 100% organically grown cotton construction. Shields against sun and precipitation.cotton Metallic ions in the fibers inhibit bacterial growth, and help neutralize odor.</span></p></body></html>`
908	`<html><head><meta http-equiv=Content-Type content="text/html; charset=windows-1252"><title>Sweatshirt</title></head><body lang=EN-US><p><span style='font-size:10.0pt;font-family:Arial'>Lightweight 100% organically grown cotton hooded sweatshirt with taped neck seams. Comes pre-washed for softness and to lessen shrinkage.</span></p></body></html>`
909	`<html><head><meta http-equiv=Content-Type content="text/html; charset=windows-1252"><title>Sweatshirt</title></head><body lang=EN-US><p><span style='font-size:10.0pt;font-family:Arial'>Top-notch construction includes durable topstitched seams for strength with low-bulk, resilient rib-knit collar, cuffs and bottom. An 80% cotton/20% polyester blend makes it easy to keep them clean.</span></p></body></html>`
910	`<html><head><meta http-equiv=Content-Type content="text/html; charset=windows-1252"><title>Shorts</title></head><body lang=EN-US><p><span style='font-size:10.0pt;font-family:Arial'>These quick-drying cotton shorts provide all day comfort on or off the trails. Now with a more comfortable and stretchy fabric and an adjustable drawstring waist.</span></p></body></html>`

The following example queries the MarketingInformation table and returns a single value for each row indicating whether the value in the Description column contains the term cotton.

SELECT ID, IF CONTAINS ( Description, 'cotton' )
      THEN 1
      ELSE 0
      ENDIF AS Results
   FROM MarketingInformation;

ID	Results
901	0
902	0
903	0
904	0
905	0
906	1
907	0
908	1
909	1
910	1

The next example queries the MarketingInformation table for items that have the term cotton the Description column, and shows the score for each match.

SELECT ID, ct.score, Description
   FROM MarketingInformation CONTAINS ( MarketingInformation.Description, 'cotton' ) as ct
   ORDER BY ct.score DESC;

ID	score	Description
908	0.9461597363521859	`<html><head><meta http-equiv=Content-Type content="text/html; charset=windows-1252"><title>Sweatshirt</title></head><body lang=EN-US><p><span style='font-size:10.0pt;font-family:Arial'>Lightweight 100% organically grown cotton hooded sweatshirt with taped neck seams. Comes pre-washed for softness and to lessen shrinkage.</span></p></body></html>`
910	0.9244136988525732	`<html><head><meta http-equiv=Content-Type content="text/html; charset=windows-1252"><title>Shorts</title></head><body lang=EN-US><p><span style='font-size:10.0pt;font-family:Arial'>These quick-drying cotton shorts provide all day comfort on or off the trails. Now with a more comfortable and stretchy fabric and an adjustable drawstring waist.</span></p></body></html>`
906	0.9134171046194403	`<html><head><meta http-equiv=Content-Type content="text/html; charset=windows-1252"><title>Visor</title></head><body lang=EN-US><p><span style='font-size:10.0pt;font-family:Arial'>Lightweight 100% organically grown cotton construction. Shields against sun and precipitation. Metallic ions in the fibers inhibit bacterial growth, and help neutralize odor.</span></p></body></html>`
909	0.8856420222728282	`<html><head><meta http-equiv=Content-Type content="text/html; charset=windows-1252"><title>Sweatshirt</title></head><body lang=EN-US><p><span style='font-size:10.0pt;font-family:Arial'>Top-notch construction includes durable topstitched seams for strength with low-bulk, resilient rib-knit collar, cuffs and bottom. An 80% cotton/20% polyester blend makes it easy to keep them clean.</span></p></body></html>`

Phrase searching

When performing a full text search for a phrase, you enclose the phrase in double quotes. A column matches if it contains the terms in the specified order and relative positions.

You cannot specify CONTAINS keywords, such as AND or FUZZY, as terms to search for unless you place them inside a phrase (single term phrases are allowed). For example, the statement below is acceptable even though NOT is a CONTAINS keyword.

SELECT * FROM table-name CONTAINS ( Remarks, '"NOT"' );

With the exception of asterisk, special characters are not interpreted as special characters when they are in a phrase.

Phrases cannot be used as arguments for proximity searches.

The following statement queries MarketingInformation.Description for the phrase "grown cotton", and shows the score for each match:

SELECT ID, ct.score, Description
   FROM MarketingInformation CONTAINS ( MarketingInformation.Description, '"grown cotton"' ) as ct
   ORDER BY ct.score DESC;

ID	score	Description
908	1.6619019465461564	`<html><head><meta http-equiv=Content-Type content="text/html; charset=windows-1252"><title>Sweatshirt</title></head><body lang=EN-US><p><span style='font-size:10.0pt;font-family:Arial'>Lightweight 100% organically grown cotton hooded sweatshirt with taped neck seams. Comes pre-washed for softness and to lessen shrinkage.</span></p></body></html>`
906	1.6043904700786786	`<html><head><meta http-equiv=Content-Type content="text/html; charset=windows-1252"><title>Visor</title></head><body lang=EN-US><p><span style='font-size:10.0pt;font-family:Arial'>Lightweight 100% organically grown cotton construction. Shields against sun and precipitation. Metallic ions in the fibers inhibit bacterial growth, and help neutralize odor.</span></p></body></html>`

Term and phrase search

Term searching

Phrase searching

See also