New Products Display

[warrenthewindmill]

I want to limit the number of new products displayed. Some months I may add 100 but may only want to show 20 of them in the new products page.
I thought I had found the solution in new_products.php

if ( (!isset($new_products_category_id)) || ($new_products_category_id == '0') ) {
    $new_products_query = tep_db_query("select p.products_id, p.products_image, p.products_tax_class_id, if(s.status, s.specials_new_products_price, p.products_price) as products_price from " . TABLE_PRODUCTS . " p left join " . TABLE_SPECIALS . " s on p.products_id = s.products_id where products_status = '1' order by p.products_date_added desc limit " . MAX_DISPLAY_PRODUCTS_NEW);
  } else {
    $new_products_query = tep_db_query("select distinct p.products_id, p.products_image, p.products_tax_class_id, if(s.status, s.specials_new_products_price, p.products_price) as products_price from " . TABLE_PRODUCTS . " p left join " . TABLE_SPECIALS . " s on p.products_id = s.products_id, " . TABLE_PRODUCTS_TO_CATEGORIES . " p2c, " . TABLE_CATEGORIES . " c where p.products_id = p2c.products_id and p2c.categories_id = c.categories_id and c.parent_id = '" . (int)$new_products_category_id . "' and p.products_status = '1' order by p.products_date_added desc limit " . MAX_DISPLAY_PRODUCTS_NEW);
  }

shouldn't 'limit' restrict the number of records returned to achieve what I want? If I change it in config all it does is change the number of products displayed on any one page, when I want to limit the number of records the SQL returns.

[warrenthewindmill]

Thought about this since I logged out. The SQL shown above is called every time a page is loaded and returns "n" records where n is MAX_DISPLAY_PRODUCTS_NEW. If I want to ensure I only get selected products then I guess the simplest solution is to run an update query to change the added date for the others to a month before the current one.