user: Question: How many 7th season episodes had 2nd season viewerships of 6 594 469?
Columns: ['Episode', '1st season', '2nd season', '3rd season', '4th season', '5th season', '6th season', '7th season']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, '4 396 564', '6 993 951', '7 411 177', '8 731 526', '8 505 195', '7 296 506', '6 289 835']
SQL:

assistant: SELECT COUNT("7th season") FROM "Table" WHERE "2nd season" = '6 594 469';