Rivercity Technology Services LTD Logo
HomeAbout Us
Technology Services
Icon showing a support technician
IT Support Services
Cybersecurity Risk Management at one predictable flat rate.
Icon of light bulbs on a laptop screen
IT Consulting
Business optimization through the smart use of technology.
Icon showing a hand holding a phone
Business Phone Services
VoIP Telephone solutions from RCT. 
Icon showing a database and a cloud
Backups & Recovery
Cloud & On Premise - ready to recover!
Icon showing computer code on a monitor
Software Development
Web & Mobile App development
Icon showing website wireframes
Website Development & Hosting
Web design and full hosting & maintenance packages!
Icon showing an envelope being opened
Modern Email Management
Microsoft 365 email provisioning, security & management.
“You’re giving me the ‘it’s not you, it’s me’ routine? I invented ‘it’s not you, it’s me.’ Nobody tells me it’s them not me; if it’s anybody, it’s me.”
- George Costanza
Learning CenterContact Us
Book A Consultation
Illustration of a person writing a blog post with a pencil

SQL Partitioning Used For Views To Drive Access

This week brought in some challenging tasks required from SQL partitioning...creating a view which mimics a GroupBy in Access.

In SQL, you use PARTITION to get a similar result set to a Group By query.  It will look something like this:

SELECT        *
FROM        (SELECT  *, ROW_NUMBER() OVER (PARTITION BY HASH ORDER BY DateSent desC) AS rn
from           (SELECT hash, survey_id, DateSent, DateCompleted
                      from dbo.tbl_survey_detail) as derivedtable) AS t
WHERE        t.rn = 1

As you can see above, a simple table with a few columns can be partitioned using one of the fields.  It is somewhat confusing to build one the first time, but the end result is quite quick and powerful.

Happy SQL coding!

Jeff Shirley
Article Written by Jeff Shirley
Related Articles
Featured image
Your Guide to Managed Website Hosting
Creating a website is only the first step. Keeping it online and accessible to visitors 24/7 involves a lot of additional work. Hosting your site means choosing...
2022 - Copyright, All Rights Reserved
crossmenu