Search sort by parameter match count in the query? PostgreSQL

Posted by Ben Dauphinee on Stack Overflow See other posts from Stack Overflow or by Ben Dauphinee
Published on 2010-06-18T14:55:37Z Indexed on 2010/06/18 15:03 UTC
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I am working on a search query in PostgreSQL, and one of the things I do is sort my query results by the number of parameters matched. I have no clue how this can be done. Does anyone have a suggestion or solution?

 Table
 brand     color     type     engine
 Ford      Blue      4-door   V8
 Maserati  Blue      2-door   V12
 Saturn    Green     4-door   V8
 GM        Yellow    1-door   V4

 Current Query
 SELECT brand FROM table WHERE color = 'Blue' or type = '4-door' or engine = 'V8'

 Result Should Be
 Ford      (3 match)
 Saturn    (2 match)
 Maserati  (1 match)

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