SHOW FULL COLUMNS FROM `city` [ RunTime:0.000746s ]
SELECT * FROM `city` WHERE `cityid` = 83 LIMIT 1 [ RunTime:0.000214s ]
SHOW FULL COLUMNS FROM `prize_exchange` [ RunTime:0.000599s ]
SELECT `a`.*,`p`.`category`,`p`.`prizename`,`p`.`price`,`p`.`smallpic` FROM `prize_exchange` `a` INNER JOIN `prize` `p` ON `p`.`prizeid`=`a`.`prizeid` WHERE `a`.`userid` IS NULL ORDER BY `a`.`exchangeid` DESC LIMIT 0,20 [ RunTime:0.000301s ]
SELECT COUNT(*) AS think_count FROM `prize_exchange` WHERE `userid` IS NULL LIMIT 1 [ RunTime:0.000189s ]
