Question

到目前为止，我有一张桌子有六个记录。每个人都有2个字段：Min_lenght，Max_lenght。这些字段定义了一个范围，因此第一项的最小值为Min_lenght = 160，最大值为Max_lenght = 179，依此类推。当定义1个值（custom_lenght）时，我需要在此值在范围内时停止SQL。因此（custom_lenght> Min_lenght）AND（custom_lenght

custom_lenght = cint(request("custom_lenght"))
Set objRS2 = Server.CreateObject("ADODB.Recordset")
sql2 = "SELECT * FROM tbl_model where Order by ID_model ASC"
objRS2.Open sql2, ConString
If Not objRS2.EOF Then
While Not objRS2.EOF
Min_lenght = cint(objRS2("Min_lenght"))
Max_lenght = cint(objRS2("Max_lenght"))
order = objRS2("order")
Price = objRS2("price") 
if (custom_lenght > Min_lenght ) AND (custom_lenght < Max_lenght) then
Outofrange="True"
else
Outofrange = "False"  
End If
objRS2.MoveNext
Wend
End If
PuliziaRS(objRS2)

问题是，SQL浏览了所有记录。我需要获取介于范围之间的商品的数据（价格和订单）

Answer 1

将您的SQL语句更改为$customfield=get_post_meta($post_id, 'custom_field', true);

这会将记录集限制为与您的custom_length相匹配的记录。

Answer 2

作为替代；

custom_lenght = cint(request("custom_lenght"))
Set objRS2 = Server.CreateObject("ADODB.Recordset")
sql2 = "SELECT order, price FROM tbl_model WHERE " & custom_lenght & " BETWEEN Min_lenght AND Max_lenght Order by ID_model ASC"
objRS2.Open sql2, ConString
If Not objRS2.EOF Then
    order = objRS2("order")
    Price = objRS2("price")
    Outofrange = "True"
Else
    Outofrange = "False"  
End If
objRS2.Close

找到正确答案后，不要停下来

2 个答案: