Php - Mysql recursive deletion question

["Andres Santos" <asantos@xxxxxxxxx>]

Hi, i have 3 tables:
* content
* content_data
* content_file

content has an ID called: id_section
content_data has an ID called: id_content
content_file has an ID called: id_content_data

1) I need to DELETE all the records from content_file that are
vinculated to the records from content where id_section=5

2) I need to DELETE all the records from content_data that are
vinculated to the records from content where id_section=5

Can (1) or (2) be executed from one SQL sentence?
So far I have this code, but it takes A LOT of innecesary resources.

$sql = 'SELECT id_content FROM content WHERE id_section=5';
$rsContent = &$cnn->Execute($sql);
while(!$rsContent->EOF) {
	$sql = 'SELECT id_content_data FROM content_data WHERE
id_content='.q($rsContent->fields['id_content']);
	$rsContentData = &$cnn->Execute($sql);
	while(!$rsContentData->EOF) {
		$sql = 'SELECT id_content_file FROM content_file WHERE
id_content_data='.q($rsContentData->fields['id_content_data']);
		$rsContentFile = &$cnn->Execute($sql);
		while(!$rsContentFile->EOF) {
			$cnn->Execute('DELETE FROM content_file WHERE
id_content_file='.q($rsContentFile->fields['id_content_file']));
			$rsContentFile->MoveNext();
		}
		$cnn->Execute('DELETE FROM content_data WHERE
id_content_data='.q($rsContentData->fields['id_content_data']));
		$rsContentData->MoveNext();
	}
	$rsContent->MoveNext();
}
$cnn->Execute('DELETE FROM content WHERE id_section=5';


Any help welcome. Thanks!
Andres S.
Gye, Ecuador


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