我正在执行sql语句的语法错误但是在我的生活中我找不到任何错误。
我已经创建了自己的数据库类,其中包含编写预处理语句并执行它们的功能,我认为我的实现没有问题,因为我之前从未遇到任何问题。但是,为了防止出现问题,我也会为此展示代码。
准备:
public function prepare($index, $sql) {
if(isset(self::$PS[$index])){
$ermsg = "Index [$index] is already in use.";
throw new Exception($ermsg, 1);
}
try{
self::$PS[$index] = $this->dbh->prepare($sql);
}
catch(PDOException $e){
return false;
}
return true;
}
并执行:
public function execute($index, Array $param = array()) {
if(!isset(self::$PS[$index])){
$ermsg = "Index [$index] is unavailable.";
throw new Exception($ermsg, 1);
}
foreach($param as $key => $val){
if(is_int($key)) ++$key;
$type = $this->getValueType($val);
$bnd = self::$PS[$index]->bindValue($key, $val, $type);
if(!$bnd){
$ermsg = "Paramater '$key' in [$index] failed to bind";
throw new Exception($ermsg, 2);
}
}
try{
$bnd = self::$PS[$index]->execute();
}
catch(PDOException $e){
$ermsg = "PDO-Error while executing prepared statement [$index] ".$e->getMessage();
throw new Exception($ermsg, 3);
}
if($bnd === false){
$ermsg = "Result error in prepared statement [$index]";
throw new Exception($ermsg, 3);
}
return self::$PS[$index];
}
正如我所提到的,我从未遇到过使用此问题的问题所以我认为这不是问题,但谁知道呢。
现在我的实施:
$sql = "INSERT INTO ratings (course_id, overall, design, condition, service, value, rated_by, date_rated)
VALUES (:course_id, :overall, :design, :condition, :service, :value, :rated_by, now()))";
DBH::getInstance()->prepare('rateit', $sql);
$stmt = DBH::getInstance()->execute('rateit', array(
":course_id"=>$course_id,
":overall"=>$overall,
":design"=>$design,
":condition"=>$condition,
":service"=>$service,
":value"=>$value,
":rated_by"=>$log_user_id
));
}
if($stmt) {
echo 'suc, Thanks! Your ratings have been added to the course.';
exit();
}else{
echo 'err, There was an error rating the course. Please try again later';
exit();
}
这是我收到的确切语法错误消息:
语法错误或访问冲突:1064 SQL语法中出错;查看与您的MySQL服务器版本对应的手册,以便在'condition,service,value,rated_by,date_rated'附近使用正确的语法。值1(1,5,5,5,5,3,'18','在第1行) “
如果有人可以发现我的语法错误,或者可能发现其他错误导致这种情况会很糟糕。谢谢你的帮助。
答案 0 :(得分:7)
条件是MySQL中的reserved word。可能就是这样。
答案 1 :(得分:3)
$sql = "INSERT INTO ratings (course_id, overall, design, condition, service, value, rated_by, date_rated)
VALUES (:course_id, :overall, :design, :condition, :service, :value, :rated_by, now()))";
应该是:
$sql = "INSERT INTO ratings (course_id, overall, design, `condition`, service, value, rated_by, date_rated)
VALUES (:course_id, :overall, :design, :condition, :service, :value, :rated_by, now())";
答案 2 :(得分:3)
Condition
是MySQL中的保留字。你应该总是在`table`和`column`名称中使用反引号(“`”)来避免这样的错误。看起来你在sql查询的末尾还有一个额外的)