MySQL 更新时出现语法错误

Question

在此脚本中找不到问题：

$delhash  = array();
$resultxx = mysqli_query($datba1,"SELECT htag 
FROM wall_hashtags 
WHERE publicat='$permid'") or die('Error1');

while(list($dht) = mysqli_fetch_row($resultxx)) {
$delhash[] = $dht;
}

以下更新不起作用：

$result_update = mysqli_query($datba1,"UPDATE wall_hashtags  SET
numbr=numbr-1 WHERE htag IN (".implode(",", $delhash).")")
die(mysqli_error($datba1));

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 'first,second,third' at line 1

数组：

echo '<pre>'; print_r($delhash); echo '</pre>';

Array
(
    [0] => first
    [1] => second
    [2] => third
)

Answer 1

请确保您使用 IN() 子句和 varchar 值进行更新。查看 this 了解更多详情。

所以你应该用'包裹它。

$result_update = mysqli_query($datba1,"UPDATE wall_hashtags  SET 
                 numbr=numbr-1 WHERE htag IN ('".implode("','", $delhash)."')")
                or die(mysqli_error($datba1));

MySQL 更新时出现语法错误

MySQL syntax error when updating

php

mysql

implode