user: Question: what is the total amount of players for the rockets in 1998 only?
Columns: ['Player', 'No.(s)', 'Height in Ft.', 'Position', 'Years for Rockets', 'School/Club Team/Country']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Ratleff, Ed Ed Ratleff', '42', '6-6', 'Guard', '1973-78', 'Long Beach State']
SQL:

assistant: SELECT COUNT("Player") FROM "Table" WHERE "Years for Rockets" = '1998';