Fehler beim Verbinden zur Datenbank<pre>
Anfrage:
SELECT n.cat_id, n.cat_descr_en, n.cat_folder, n.cat_lft, n.cat_rgt, COUNT(*)-1 AS level,
		ROUND((n.cat_rgt-n.cat_lft-1)/2) AS offspring
		FROM categories AS n, categories AS p
		WHERE n.cat_lft BETWEEN p.cat_lft
		AND p.cat_rgt
		GROUP BY n.cat_lft
		ORDER BY n.cat_lft
Antwort:
No database selected
Fehlercode: 1046</pre>