构造查询语句 sql

1. sqlt="select top 10 * from search_word where f_class=2 "
2.                    if m_keywords<>"" then                    
3.                      sqlt=sqlt" and ("
4.                       for i = 0 to ubound(idwords)                    
5.                       if idwords(i)<>"" then 
6.                       if i>0 then sqlt=sqlt" or "
7.                       sqlt=sqlt" f_word like  '%" & idwords(i) & "%'"
8.                        end if
9.                       next
10.                      sqlt=sqlt" ) "
11.                      end if