Stored Access Queries Speed Response Time

In general, stored Access queries are faster than embedded SQL in your VB application. It can be a great benefit to be able to send parameters to the query directly from VB. Saving these queries in Access also reduces the amount of code you must maintain directly in your VB app. These code segments show how to send a parameter to a stored Access query. Here is the example Access SQL query:


This code retrieves an IP address from an Access table, where the host ID in the table matches the host ID in the parameter. This code is stored in the Access database and has already been parsed and optimized. This is the key to gaining the performance benefits of stored queries. The Jet engine then uses this QueryDef when it is called from VB.Assume that there is a form with a data control on it. Here is the corresponding VB code to send the parameter:

 Dim db As DatabaseDim rs As RecordsetDim qd As QueryDefSet db = dthosts.Database'dthosts is a data control on a formSet qd = db.QueryDefs("aq_host")'aq_host is the MS Access query nameqd.Parameters("ID") = "MY_Host_ID"'host ID is the parameter for this querySet rs = qd.OpenRecordset()'open the recordset Set dthosts.Recordset = rs'return the recordset to the data control

You can now use this data control in conjunction with a list-box control (or whatever control you like) to display the data. You can also add multiple parameters by adding more “qd.parameters” to the middle section of this code.Insert, update, and delete queries (or “action queries,” as they are called in Access) can use parameters in the same fashion.

Share the Post:
Share on facebook
Share on twitter
Share on linkedin


The Latest

your company's audio

4 Areas of Your Company Where Your Audio Really Matters

Your company probably relies on audio more than you realize. Whether you’re creating a spoken text message to a colleague or giving a speech, you want your audio to shine. Otherwise, you could cause avoidable friction points and potentially hurt your brand reputation. For example, let’s say you create a

chrome os developer mode

How to Turn on Chrome OS Developer Mode

Google’s Chrome OS is a popular operating system that is widely used on Chromebooks and other devices. While it is designed to be simple and user-friendly, there are times when users may want to access additional features and functionality. One way to do this is by turning on Chrome OS

homes in the real estate industry

Exploring the Latest Tech Trends Impacting the Real Estate Industry

The real estate industry is changing thanks to the newest technological advancements. These new developments — from blockchain and AI to virtual reality and 3D printing — are poised to change how we buy and sell homes. Real estate brokers, buyers, sellers, wholesale real estate professionals, fix and flippers, and beyond may