如果只有一行，SQL拒绝删除行
我有一个临时上传表，当我尝试从临时表中删除上传的文件时，它会删除除一行之外的所有行。请帮助我不知道为什么会发生这种情况我已经检查了所有的sql和PHP。
delete from `message_attachments_temp`
where
`from` = 1 AND
`to` = 2
出于某种原因，SQL将删除所有内容，但会留下一行。有谁知道可能导致这种情况的原因。
这是我的php函数，它提交邮件上传并将其从临时上传表中删除。
else if($rtype == 23) {/* submit message */
$friends_username = isset($_REQUEST['to']) ? $Wall->filterData($_REQUEST['to']) : "";
/* get link preview data from ajax */
$linkPicture = isset($_POST['linkPicture']) ? trim($_POST['linkPicture']) : "";
$linkTitle = isset($_POST['linkTitle']) ? trim($_POST['linkTitle']) : "";
$linkDescription = isset($_POST['linkDescription']) ? trim($_POST['linkDescription']) : "";
$linkURL = isset($_POST['linkURL']) ? trim($_POST['linkURL']) : "";
$linkVideoID = isset($_POST['linkVideoID']) ? trim($_POST['linkVideoID']) : "";
$linkVideoProvider = isset($_POST['linkVideoProvider']) ? trim($_POST['linkVideoProvider']) : "";
if(isset($logged_user_id) && isset($friends_username)) {/* if the user is logged in and there is a friend id then */
$queryed = trim(strip_tags(htmlspecialchars($_POST["sendMessageUID"])));
function no_magic_quotesed($queryed) {
$dataed = explode("\\",$queryed);
$cleaneded = implode("",$dataed);
return $cleaneded;
}
$checkfor_attachments = mysqli_query($asktippyDatabaseConnection, " SELECT * from `message_attachments_temp`
where
`from` = ".mysqli_real_escape_string($asktippyDatabaseConnection, $logged_user_id)." and
`to` = ".mysqli_real_escape_string($asktippyDatabaseConnection, strip_tags($friends_username))."
order by `id` asc");
if(mysqli_num_rows($checkfor_attachments) == 0 && $queryed == "") {/* if no temporary attachments are found then */
echo "empty";
exit;
}
$date = mysqli_real_escape_string($asktippyDatabaseConnection, strtotime(date("Y-m-d H:i:s")));
$group_id = $Wall->get_group_nbr(mysqli_real_escape_string($asktippyDatabaseConnection, strip_tags($_POST['to'])), mysqli_real_escape_string($asktippyDatabaseConnection, strip_tags($_POST["from"])));
mysqli_query($asktippyDatabaseConnection, "insert into `messages` values( '',
'".mysqli_real_escape_string($asktippyDatabaseConnection, strip_tags($_POST['to']))."',
'".mysqli_real_escape_string($asktippyDatabaseConnection, strip_tags($logged_user_id))."',
'".mysqli_real_escape_string($asktippyDatabaseConnection, no_magic_quotesed($queryed))."',
'0',
'0',
'".mysqli_real_escape_string($asktippyDatabaseConnection, $date)."',
'0',
'".$group_id."')");
$mesgid = mysqli_insert_id($asktippyDatabaseConnection);
### attach
error_log(print_r('number of temporary attachments: '.mysqli_num_rows($checkfor_attachments), true));
if(mysqli_num_rows($checkfor_attachments) > 0) {/* if there are temporary message attachments then */
while($getall_attachments = mysqli_fetch_array($checkfor_attachments)) {
mysqli_query($asktippyDatabaseConnection, "insert into `message_attachments` values( '',
'".$mesgid."',
'".$getall_attachments["file"]."',
'0',
'0',
'".strip_tags(time())."',
'".$linkTitle."',
'".$linkDescription."',
'".$linkURL."',
'".$linkPicture."',
'".$linkVideoProvider."',
'".$linkVideoID."',
'0',
''
)");
}
mysqli_query($asktippyDatabaseConnection, "delete from `message_attachments_temp`
where
`from` = ".mysqli_real_escape_string($asktippyDatabaseConnection, $logged_user_id)." AND
`to` = ".mysqli_real_escape_string($asktippyDatabaseConnection, strip_tags($friends_username))."");
error_log(print_r("delete from `message_attachments_temp`
where
`from` = ".mysqli_real_escape_string($asktippyDatabaseConnection, $logged_user_id)." AND
`to` = ".mysqli_real_escape_string($asktippyDatabaseConnection, strip_tags($friends_username))."", true));
}
### attach
if(mysqli_real_escape_string($asktippyDatabaseConnection, strip_tags($_POST['newmessage_load_prev_chat'])) == 1) {
$check_all_available_conversations = mysqli_query($asktippyDatabaseConnection, "SELECT * FROM `messages` where
`touser` = '".mysqli_real_escape_string($asktippyDatabaseConnection, $logged_user_id)."' and
`fromuser` = ".mysqli_real_escape_string($asktippyDatabaseConnection, strip_tags($friends_username))." and
`deleted` = '0' || `touser` = ".mysqli_real_escape_string($asktippyDatabaseConnection, strip_tags($friends_username))." and
`fromuser` = ".mysqli_real_escape_string($asktippyDatabaseConnection, $logged_user_id)." and `outdeleted` = '0' order by `mesg_id` asc");
} else {
$check_all_available_conversations = mysqli_query($asktippyDatabaseConnection, "SELECT * from `messages` where
`touser` = '".mysqli_real_escape_string($asktippyDatabaseConnection, $logged_user_id)."' and
`fromuser` = '".mysqli_real_escape_string($asktippyDatabaseConnection, strip_tags($friends_username))."' and
`deleted` = '0' || `touser` = '".mysqli_real_escape_string($asktippyDatabaseConnection, strip_tags($friends_username))."' and
`fromuser` = '".mysqli_real_escape_string($asktippyDatabaseConnection, $logged_user_id)."' and `outdeleted` = '0' order by `mesg_id` desc limit 1");
}
while($get_all_available_conversations = mysqli_fetch_array($check_all_available_conversations)) {
$check_friends_full_details = mysqli_query($asktippyDatabaseConnection, "select * from `users` where `mem_id` = ".mysqli_real_escape_string($asktippyDatabaseConnection, strip_tags($get_all_available_conversations['fromuser']))."");
while($get_friends_full_details = mysqli_fetch_array($check_friends_full_details)) {
$avatar = $Wall->get_user_avatar($get_friends_full_details['mem_id']);
if($get_friends_full_details['mem_id'] == $logged_user_id) { ?>
<div class="message-popup-convers-item2">
<div class="message-popup-convers-content998">
<div class="message-popup-convers-text998">
<?php if($get_all_available_conversations['message']) { ?>
<?php echo nl2br(strip_tags(stripslashes($get_all_available_conversations['message'])));?>
<?php } ?>
</div><!--message-popup-convers-text-->
</div><!--message-popup-convers-content-->
</div><!--message-inbox-item-->
<div class="message-popup-convers-item2-content">
<div class="message-popup-convers-content99820">
<?php echo get_posts_html($get_all_available_conversations['mesg_id'], $logged_user_id); ?>
</div><!--message-popup-convers-content-->
</div><!--message-inbox-item-->
<?php $last_message_time = strip_tags(stripslashes($Wall->timeFormat($get_all_available_conversations['datesent'])));
} else { ?>
<div class="message-popup-convers-item">
<img class="message-popup-convers-avatar9982" src="<?php echo $avatar; ?>" alt="">
<div class="message-popup-convers-content">
<div class="message-popup-convers-text">
<?php if($get_all_available_conversations['message']) { ?>
<?php echo nl2br(strip_tags(stripslashes($get_all_available_conversations['message'])));?>
<?php } ?>
</div><!--message-popup-convers-text-->
</div><!--message-popup-convers-content-->
</div><!--message-inbox-item-->
<div class="message-popup-convers-item-content">
<div class="message-popup-convers-content20">
<?php echo get_posts_html($get_all_available_conversations['mesg_id'], $logged_user_id); ?>
</div><!--message-popup-convers-content-->
</div><!--message-inbox-item-->
<?php $last_message_time2 = strip_tags(stripslashes($Wall->timeFormat($get_all_available_conversations['datesent'])));
}
}
}
$Wall->insertNotificationTrack(mysqli_real_escape_string($asktippyDatabaseConnection, strip_tags($_POST["from"])), 0, 18, mysqli_real_escape_string($asktippyDatabaseConnection, strip_tags($_POST["to"]))); // sent in message
} else {
echo "<div id='message_info'>Sorry, something went wrong.</div>";
}
}
1 个答案:
答案 0 :(得分：0)
如果您要对表进行TRUNCATE并且您有外键，请尝试以下操作：
SET FOREIGN_KEY_CHECKS = 0;
TRUNCATE table $table_name;
SET FOREIGN_KEY_CHECKS = 1;
如果要删除特定行，请尝试选择所有ID并删除这些ID， 希望这会起作用
DELETE FROM `table_name` WHERE `id` IN (your query);
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