MySQL简单查询

Question

I have no idea what I'm doing wrong, but I'm not really good with MySQL. I basically have a table in my database that has the column "status". If the statement is true I want to change the status to "1", and if its false I want to change the status to "0".

Where I'm having trouble, is the MySQL query, I have the PHP part all set up and working (tested it with echo).

My current query: (this is what happens after the { of my PHP if-statement)

mysql_query('UPDATE page WHERE id="'.$id.'" SET status="1"');

The way I define $id:

if(isset($_GET['id']))
{
$id = intval($_GET['id']);
}

Thanks ahead!

Answer 1

Since you want to update all records (from your description) you can do

UPDATE page
SET `status` = case when id = $id 
                   then 1
                   else 0 
               end

Answer 2

It should be:

mysql_query('UPDATE page SET status="1" WHERE id="$id"');

If using mysqli:

mysqli_query($cxn, 'UPDATE page SET status="1" WHERE id="$id"');

Answer 3

Change the order of SET and WHERE like this:

mysql_query('UPDATE page SET status=1 WHERE id="'.$id.'" ');

And you do not need the double " around a integer on MySQL.