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Mastering CROSS JOIN in SQL Server: From Cartesian Products to Reusing Calculated Columns

by Jonathan Halder | Jun 26, 2025 | Blogging, MS Access, MS Access Queries

I had never heard of a cross join, but was exploring ways to put some complex calculations into other calculations in a nested fashion on SQL server. SQL does not allow you to reference a calculated column to calculate another column, but this method allows you to add...

Simplifying Complex SQL Logic with CTEs in SQL Server

by Jonathan Halder | Jun 26, 2025 | Blogging, MS Access, MS Access Queries

This was the technique I ended up using in my query which inspired this article. Again, I had help from Copilot to author the following article about using the CTE (Common Table Expression) syntax: When writing SQL queries, especially those involving multiple layers...

Comparing 2 data sets visually

by Jonathan Halder | Jun 20, 2025 | Blogging, MS Access, MS Access Queries, MS Access Reports, MS Access VBA Coding

I was asked by a customer to mark fields in red that changed each week in a report. So what strategy did I come up with? Well first I need to store the data from the original run of the report. The customer wants to know what changed since the last automated report...

Dealing with complex SQL queries

by Jonathan Halder | Jun 10, 2025 | Blogging, MS Access, MS Access Queries, MS Access VBA Coding

I find myself annoyed with my younger self as I slough through multiple views and queries to slightly change some things so that I can get a similar result set with slightly different customer requirements. Simply put, in this case, the main issue is that I have 2...

Two Form Filtering strategies

by Jonathan Halder | Jun 5, 2025 | Blogging, MS Access, MS Access Forms, MS Access Queries, MS Access VBA Coding

Today I updated a form and added a new filter textbox to it to allow the customer to specify part of a part number and filter a list of CSV files that contain that part number. It’s actually already processed these files and the data for all part numbers is in a...

Using combo boxes to select an entry and update form fields

by Jonathan Halder | May 6, 2025 | Blogging, MS Access, MS Access Forms, MS Access Queries, MS Access VBA Coding

Yesterday I mentioned a technique I use to hide repeated report fields: https://www.accessjumpstart.com/hiding-duplicate-records-using-running-totals-over-a-group/ Today, I will discuss another technique I use to update fields on a form based on columns in a combo box...
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    1. RichardRost on Breaking the Triangle: Can You Really Have It All in Access Software Projects?
    2. Jonathan Halder on Mastering CROSS JOIN in SQL Server: From Cartesian Products to Reusing Calculated Columns
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