Access和VB6查询以获取基于一系列数字的值

Question

Am writing a query to get commission from a table tblcommssion but this depends on the amount entered in a text box.

Eg

| min_tier | max_tier | commission |
|----------| ---------| ---------- |
|   500    | 2500     | 100        | 
|   2501   | 5000     | 125        | 
|   5001   | 15000    | 450        | 

my query is

Select commission
from tblAgentCommission
where min_tier <= '" & Format(txtWithAmount.Text, "##0")"' and
      max_tier >= '" & Format(txtWithAmount.Text, "##0") & "'

But it fetches wrong the commission, ie one that does not correspond with the row eg when I enter 4200, I expect commission to be 125 since 4200 lies between 2501 and 5000.

Where did I go wrong?

Answer 1

You are comparing strings and numbers. This is dangerous, because the values are compared as strings . Start by removing the quotes around the values:

Select commission
from tblAgentCommission
where min_tier <= " & Format(txtWithAmount.Text, "##0")" and
      max_tier >= " & Format(txtWithAmount.Text, "##0");

This assumes that min_tier and max_tier are numbers. If they are strings, you also need to fix their types in the table.