How to know if when using “on duplicate key update” a row was inserted or updated?

Question

We have a database that gets updated everyday at midnight with a cronjob, we get new data from an external XML.

What we do is that we insert all the new content and

Answer 1

I can say How I did in PHP:

1) Simple query SELECT MAX(id) and remember it to $max_id from table before Insert On Duplicate.

2) Then during the update process collect ID of affected rows (no mater new or existed): $ids[] = mysql_insert_id();

3) Then $inserted_rows = max($ids)-$max_id;

4) Updated rows = count($ids_srt)-$inserted_rows

$max_id = mysql_query("SELECT MAX(id) from table");
$max_id = mysql_result($max_id, 0);

// !!! prepare here 'insert on duplicate' query in a cycle

$result=mysql_query($query);
$ids[] = mysql_insert_id();

// finish inserting and collecting affected ids and close cycle

$inserted_rows = max($ids)- $max_id;
$updated_rows = count($ids)- $inserted_rows