https://github.com/cavo789/vba_excel_dataquery_update
Small demo on how to run a UPDATE query on a worksheet
https://github.com/cavo789/vba_excel_dataquery_update
Last synced: 4 months ago
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Small demo on how to run a UPDATE query on a worksheet
- Host: GitHub
- URL: https://github.com/cavo789/vba_excel_dataquery_update
- Owner: cavo789
- License: mit
- Created: 2021-06-18T20:05:51.000Z (almost 4 years ago)
- Default Branch: main
- Last Pushed: 2021-06-19T07:49:58.000Z (almost 4 years ago)
- Last Synced: 2024-11-28T23:34:03.711Z (5 months ago)
- Language: VBA
- Size: 139 KB
- Stars: 3
- Watchers: 3
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# Running UPDATE statements on a worksheet
Small demo on how to run a UPDATE query on a worksheet
## Description
This is a small proof of concept but a working one.
The need is the following: you have an Excel worksheet that contains a large number of columns and, based on rules, you want to complete a column e.g. a status.
You can do it with a `IF` formula when you've only one *rule* but what if you've multiple conditions?
What is a rule? In fact, we can write a rule as an `UPDATE` query:
```sql
UPDATE TheSheet SET StatusColumn="..." WHERE FirstColumn=xxx and SecondColumn=yyy and ThirdColumn=zzz`
```
In this example, we can write an `IF` formula... Easy.
But consider 250 rules? The `IF` formula will be just impossible to write and to maintain.
Let's think outside the box.
Excel, since years, allows to access to the spreadsheet just like if it is a database table.
Why not using a `rules` table that will define all the conditions (the 250 rules in my example will be 250 rows in the `rules` table). Then, with a small VBA code, process the first rule, convert it as an `UPDATE` statement, run it against the data worksheet and process the second rule, until the last one.
So, at the end, we can just put a button on the sheet, click on it and ... tadaaaa:
Below the `rules` sheet:
The VBA is really simple, it's just a proof of concept, and can be improved easily to support OR statement, start / end with conditions and many more.
Download the [Dataquery_Update_sample.xlsm](Dataquery_Update_sample.xlsm) file to get the example or just see the code in the `src` folder of this repository.