为什么我收到 "You have an error in your SQL syntax" 错误？

Question

我在准备 mysqli 语句时遇到以下错误。

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 ' phone = ?, status = ?, 'date' between ? AND ? ORDER BY id DESC LIMIT ?' at line 1

mysqli 准备语句：

$stmt = $mysqli->prepare("SELECT id,role,fullname,phone,email,balance,status,parent, date_format(date,'%d-%m-%Y %h:%i:%s %p') AS date FROM users WHERE id = ?, phone = ?, status = ?, 'date' between ? AND ? ORDER BY id DESC LIMIT ?");
if ( false===$stmt ) 
{
  die('prepare() failed: ' . htmlspecialchars($mysqli->error));
}
$rc = $stmt->bind_param('iiissi',$duid,$dmobile,$dstatus,$sdatetime,$edatetime,$dlimit);
if ( false===$rc ) 
{
  die('bind_param() failed: ' . htmlspecialchars($stmt->error));
}
$re = $stmt->execute();
if ( false===$re ) 
{
  die('execute() failed: ' . htmlspecialchars($stmt->error));
}
$stmt->store_result();
$stmt->bind_result($userid, $urn, $uname, $uphone, $uemail, $ubalance, $ustatus, $up, $udate);
$stmt->fetch();

Answer 1

WHERE 子句用 AND（或 OR）而不是逗号分隔。您还有另一个语法错误，您将列名 date 放在引号中。应该是蜱虫。引号用于字符串。

$stmt = $mysqli->prepare("SELECT id,role,fullname,phone,email,balance,status,parent, date_format(date,'%d-%m-%Y %h:%i:%s %p') AS date FROM users 
                         WHERE id = ? AND phone = ? AND status = ? 
                         AND `date` between ? AND ? ORDER BY id DESC LIMIT ?");

Answer 2

这是无效语法：

WHERE id = ?, phone = ?

你想要这个：

WHERE id = ? AND phone = ?

或者可能是这样的：

WHERE id = ? OR phone = ?

或者在您的 WHERE 子句中进一步组合显式布尔逻辑。

（重复 WHERE 子句的其余部分。）

Answer 3

我相信您想使用 AND 或 OR 而不是 ,

Answer 4

基本问题

您尝试使用逗号 (,) 组合多个条件，这在语法上是错误的。

快速解决方案

替换

WHERE id = ?, phone = ?

与

WHERE id = ? AND phone = ?

更多解释

在单个 SELECT 语句中只能有一个 WHERE 子句。在单个 WHERE 子句中使用 AND 和 OR 等逻辑运算符组合多个条件。逗号（,）适用于IN子句，可与WHERE子句结合使用。

为什么我收到 "You have an error in your SQL syntax" 错误？

Why I'm getting "You have an error in your SQL syntax" error?

php

mysql

sql

mysqli

prepared-statement