What does double "at" (@) marks mean in this MySQL query?

Posted by umanga on Stack Overflow See other posts from Stack Overflow or by umanga
Published on 2010-03-25T04:19:44Z Indexed on 2010/03/25 4:23 UTC
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I couldn't find anything about this in MySQL documentation.

SELECT accesion_id, 
       definition 
  FROM accesion_table 
 WHERE search_word @@ ? OFFSET ? LIMIT Const.MAX_DISP_COUNT;

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