组合查询怎样做比较好？该如何解决

组合查询怎样做比较好？
从多个字段中任意选取若干个进行查询，怎样做较好？
请各位帮忙，谢谢！

[解决办法]
Sql = "Select * From [table_name] Where 1=1 "
if Request( "field1 ") <> " " then
Sql = Sql & " and field1= ' " & Request( "field1 ") & " ' "
End If

if Request( "field2 ") <> " " then
Sql = Sql & " and field2= ' " & Request( "field2 ") & " ' "
End If
……