user: Question: how many times is the co-singer Suresh Wadkar and the film name is Tera Dukh Mera Dukh?
Columns: ['Year', 'Song name', 'Film name', 'Co-singer', 'Music director', 'Lyricist', 'Language']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [2000.0, '"Man Saari Umar"', 'Ganga Kare Insaaf', 'Solo', 'Ravindra Jain', 'Ravindra Jain', 'Bhojpuri']
SQL:

assistant: SELECT COUNT("Lyricist") FROM "Table" WHERE "Co-singer" = 'Suresh Wadkar' AND "Film name" = 'Tera Dukh Mera Dukh';