user: Question: When the Altrincham was the home team what was the tie no?
Columns: ['Tie no', 'Home team', 'Score', 'Away team', 'Attendance']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['1', 'Barrow', '3–1', 'Gateshead F.C', '551']
SQL:

assistant: SELECT "Tie no" FROM "Table" WHERE "Home team" = 'Altrincham';