1

    select sub_table.num,sub_table.job_id

    from (

    select count(*) as num,t.job_id 

    from dir_irai t group by t.job_id order by num desc

    ) 

    sub_table where sub_table.num>1

    2　　 

    select distinct sub_table.num,t2.job_id,t2.anken_id,t2.job_id

    from (

    select count(*) as num,t.job_id 

    from dir_irai t group by t.job_id order by num desc

    ) 

    sub_table,dir_irai t2 where sub_table.num>1 and sub_table.job_id=t2.job_id order by t2.job_id 

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