升级数据库时出错，谁能帮忙看一下

1. ALTER TABLE `cdb_ratelog`
   
2. ADD COLUMN `point`  tinyint(2) UNSIGNED NOT NULL DEFAULT 0 AFTER `score`;
   
3. 
   
4. ALTER TABLE `cdb_threads`
   
5. ADD COLUMN `point`  tinyint(2) UNSIGNED NOT NULL DEFAULT 0 AFTER `rate`,
   
6. SQLfunction request($cachekey, $fid = 0, $type = 0, $return = 0)
   
7. 
   
8. ALTER TABLE `cdb_threads` ADD `imagenum` INT NOT NULL COMMENT 'nomber' AFTER `recommend_sub` ;

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上面是升级代码

出错提示

1. 升级错误，MySQL 提示: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'SQLfunction request($cachekey, $fid = 0, $type = 0, $return = 0) ALTER TABLE `cd' at line 1 ，请返回。

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没人懂代码么？