'ä»æ°æ®åºäž­ååŸfidçææåç.
è¿åçæ¯äžäžªlist, éé¢æ¯æé¡ºåºæå¥œçmd5çåŒ'

def get_slice_db(self, fid):

    sql = 'SELECT    md5    FROM    slice    WHERE    fid=?'
    req = self.cursor.execute(sql, [fid])
    if req:
        return [r[0] for r in req]
    else:
        return None
