php - delete using where and or

Question

I have a database table [id,first,second,third] with a lot of entries and I would like to delete all the entries when [first,second,third] are empty.

Can I use WHERE and OR?

Here is my code I would like to use. However, it might show some errors:

$sql= "delete * from mytable where first='' or second='' or third=''";
mysql_query($sql) or die("query failed: $sql".mysql_error()); 

Answer 1

You don't need * in this statement.

$sql= "delete from mytable where first='' or second='' or third=''";