hjl
select * from product where id=191
select picurl from dbfocus where id=67
select * from product where parentid=0 and isclass=1 order by sortid asc,id desc
select * from dbctn where b_id=6 order by sortid asc,id desc
select * from product where parentid='191' and isclass=0 order by sortid asc,id desc
select * from product where parentid='191' and isclass=0 order by sortid asc,id desc limit 0,9
select * from dbctn where b_id=4 order by sortid asc,id desc
Certificates
select * from dbctn where b_id=10 order by sortid asc,id desc
select * from dbctn where b_id=8 order by sortid asc,id desc