user: Question: What date has the competition of UEFA Euro 2012 qualifying?
Columns: ['Date', 'Venue', 'Score', 'Result', 'Competition']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['26 March 2008', 'Ernst-Happel-Stadion , Vienna, Austria', '2–0', '3–4', 'Friendly']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Competition" = 'UEFA Euro 2012 qualifying';