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;
Most likely the code that is executing this sql statement has some parser that's handling this odd syntax, since the the @@, ? and Const.MAX_DISPLAY_COUNT aren't part of MySQL. Also the keyword OFFSET must be placed after the LIMIT keyword.
With Oracle the '@@' to point to the current directory of the executing file. Could it be that MySql might be following Oracles lead?
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.