|  | 
 
  
    | You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'AND A1.11_num=A1.11_pnum' at line 5 |  
    | SELECT A1.11_num, A1.11_subject, A1.wdate, A2.11_num as CHK FROM
 T1_Customer.1and1 as A1
 left join T1_Customer.1and1 as A2 on A1.11_num=A2.11_pnum AND A1.11_num!=A2.11_num
 WHERE A1.user_num= AND A1.11_num=A1.11_pnum
 |  
  
    |  |  
    | 번호 | 제목 | 답변 여부 | 질문일자 |  
    | 상담내용이 없습니다. |  |