MySQL错误1064-但是没有错误？

Question

I'dont understand this:

I will update a mysql database.

mysql_query("UPDATE image Set title = '".$ed1."', desc = '".$ed2."', cat = '".$ed3."', privacy = '".$ed4."' WHERE id = '".$id."'");

But it shows:

ERROR 1064

and:

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 desc = [...]

EDIT: Thanks for reply. I've renamed the name! Now it works ;)

Answer 1

DESC is a reserved word in SQL. You'll need to quote it if you want to use it:

mysql_query("UPDATE `image` Set `title` = '".$ed1."', `desc` = '".$ed2."', `cat` = '".$ed3."', `privacy` = '".$ed4."' WHERE `id` = '".$id."'");

You should try to avoid using reserved words for field names if you can; there's a list here: http://dev.mysql.com/doc/refman/5.0/en/reserved-words.html

You should also look at migrating from mysql_* functions, as they're being deprecated. You should look at using PDO or mysqli instead - they both help you write much more secure SQL.

Answer 2

DESC is a reserved word in MySQL . You need to escape it with backticks. Try

UPDATE image Set title = '".$ed1."', `desc` = ...