How can I tell if query gets executed?

[Anon]

I got this query, I always echo $sql;
But I feel that it doesn't execute,
I don't get any results...

[kparker]

What is the return value? (This will tell you if it's legal or not.)

What is the return value of mysql_affected_rows() (for an insert/update/delete) or mysql_num_rows() (for a select?) These functions or their analogs for other dbms will tell you how many rows your query affected.