使用concat的pdo更新语句不起作用 [英] pdo update statement using concat is not working

问题描述

我对PDO还是陌生的，并且无法使下面的更新语句起作用.我希望能够通过仅用逗号和新名称附加到当前值来更新名称字段.结果名称字段应为james，doug，paul等.这可能是一个简单的答案，但我无法通过大量谷歌搜索找到解决方案！

I am still new to PDO and am having trouble getting the update statement below to work. I want to be able to update the name field by just appending to the current value with a comma and the new name. Resulting name field should be like james,doug,paul,etc. This is probably a simple answer but I haven't been able to find a solution through a lot of googling!

预先感谢

    $stmt = $db->prepare('UPDATE table SET name = concat(name, ',' :name) WHERE id = :id');
    $stmt->execute( array('name' => $name, 'id' => $id) );

推荐答案

您在concat中缺少逗号.

you lack comma inside your concat.

 $stmt = $db->prepare("UPDATE table SET name = concat(name, ',', :name) WHERE id = :id");
                      ^                                        ^ here                 ^

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