Return a dict of the last function called for all minions

def get_fun(fun):
    '''
    Return a dict of the last function called for all minions
    '''
    with _get_serv(ret=None, commit=True) as cur:

        sql = '''SELECT s.id,s.jid, s.full_ret
                FROM salt_returns s
                JOIN ( SELECT MAX(`jid`) as jid
                    from salt_returns GROUP BY fun, id) max
                ON s.jid = max.jid
                WHERE s.fun = %s
                '''

        cur.execute(sql, (fun,))
        data = cur.fetchall()

        ret = {}
        if data:
            for minion, _, full_ret in data:
                ret[minion] = full_ret
        return ret