You could probably do this using dynamic sql using sys.cols and sys.tables, which you should be able to create a query.
This, in any case, will be an extremely long request.
, , sql, , , , . [ ] . , varchar.
SELECT 'SELECT ''' + TABLE_NAME + '.' + column_name +
''' FROM ' + TABLE_NAME + ' WHERE ' +
column_name + ' = ''[your value here]'''
FROM INFORMATION_SCHEMA.COLUMNS
WHERE DATA_TYPE = 'varchar';