语句错误，，

insert into BT_ACCT_TYPE_T
    (bill_cycle,
     serv_id,
     acct_id,
     phone_id,
     product,
     fee_type1_id,
     fee_type2_id,
     month_total_fee,
     month_primal_fee,
     month_discount_fee,
     month_derated_fee,
     month_adjusted_fee)
    select ' 201301 ',
           a.serv_id,
           '''',
           a.phone_id,
           a.product,
           b.fee_type1_id,
           b.fee_type2_id,
           nvl(SUM(a.charge),''0'') month_total_fee,
           nvl(sum(a.primal_charge),''0'') month_primal_fee,
           nvl(sum(a.discount_charge),''0'') month_discount_fee,
           nvl(sum(a.derated_charge),''0'') month_derated_fee,
           nvl(sum(a.adjusted_charge),''0'') month_adjusted_fee
      from bt_evt_bill_'01
          ' a, BT_FEE_TYPE b
     where a.fee_item_id = b.fee_item_id
      and a.phone_id like ''1%''
     group by a.serv_id,
              a.phone_id,
              a.product,
              b.fee_type1_id,
              b.fee_type2_id ';


------解决方案--------------------
格式错误吧？
insert into BT_ACCT_TYPE_T
    (bill_cycle,
     serv_id,
     acct_id,
     phone_id,
     product,
     fee_type1_id,
     fee_type2_id,
     month_total_fee,
     month_primal_fee,
     month_discount_fee,
     month_derated_fee,
     month_adjusted_fee)
    select '201301',
           a.serv_id,
           ' ',
           a.phone_id,
           a.product,
           b.fee_type