问题描述
我有一个查询,我正在计算行数,但它显示了这个错误..
I have a query where I am counting rows but it's showing this error..
致命错误:未捕获的异常 'PDOException' 带有消息 'SQLSTATE[42000]:语法错误或访问冲突:1064 您的 SQL 语法有错误;检查与您的 MySQL 服务器版本相对应的手册,了解在 'from=?AND to=?'在 C:\wamp\www\network\profile.php 的第 1 行'第 38 行
( ! ) PDOException: SQLSTATE[42000]: 语法错误或访问冲突:1064 你的 SQL 语法有错误;检查与您的 MySQL 服务器版本相对应的手册,了解在 'from=?AND to=?'在 C:\wamp\www\network\profile.php 第 1 行的第 38 行
( ! ) PDOException: SQLSTATE[42000]: Syntax error or access violation: 1064 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 'from=? AND to=?' at line 1 in C:\wamp\www\network\profile.php on line 38
这是我的代码:
$sql_check_friend = "SELECT COUNT(*) FROM connection_request WHERE from=:me AND";
$sql_check_friend .= "to=:friend";
$sth = $db->prepare($sql_check_friend);
$sth->bindParam(":me", $me);
$sth->bindParam(":friend", $pageuserid);
$sth->execute();
$count = $sth->fetchColumn();
if($count > 0){
echo "REQUEST SENT";
}else{
echo "NOT SENT";
}
我不知道出了什么问题..
I can't figure out what's wrong..
推荐答案
from
是一个 保留字.它必须在您的查询中转义:
from
is a reserved word. It must be escaped in your query:
SELECT ... WHERE `from` := ...
^-- ^---
to
也是如此——它也是一个保留字.
And ditto for to
as well - it's a reserved word too.
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