how to receive fast result from access query?

Question

i have table (MyTbl) that has 3 field's A,B,C

this table contain 800000 records.

what is the best way to receive fast result ?

i try this:

select top 1 A from MyTbl where A='123'

but it isn't fast

i work with Access 2007 - and C# program

Answer 1

在MyTbl A列上创建索引 。

Answer 2

在表MyTbl字段A上创建索引 。