Skip to main content

SOQL: Improvements

How many of you have faced problems understanding the basic difference between Object relationships (as provided by Salesforce.com) and Table/entity Relationships (as provided in conventional RDBMS)?
I am sure many of you must have faced the same problem, at least I did. But lately there are some new enhancements in SOQL which narrows down these differences. For e.g now in SOQL you can have INNER JOINS and you can group data using the famous GROUP BY clause.

So, what is the big deal?

Well, yeah it’s not a big deal that you can
- do more in SOQL and remove your earlier code using which you used to retrieve data in case of INNER JOINS
or
- group your data using GROUP BY clause and have conditions on it using HAVING clause
or
- use some new Date functions in your SOQL query to filter your data (which you used to do using Apex code).

So, in all it means richer SOQL and lesser use of Apex for these purposes.

Interested, then checkout a very good article written by Dr. Umit Yalcinalp
http://wiki.developerforce.com/index.php/A_Deeper_look_at_SOQL_and_Relationship_Queries_on_Force.com
Labels:

Comments

Post a Comment

Popular posts from this blog

Quick Tips: Salesforce default Images

Well, I'm sure a lot of you still rely on using out of the box salesforce images for displaying quick icons within formula fields or even using them within your Visualforce pages. Lately, I realized that a lot of earlier resources are no longer accessible, so I tried to quickly extract all images from Salesforce CSS files and provide a quick reference here. Please note, I've referenced all images from SF servers directly, so if anything changes, the image should stop rendering here. As these images are completely controlled by Salesforce, and in case they change anything, it might lead to image not being accessible. Image path Image /img/samples/flag_green.gif /img/samples/flag_green.gif /img/samples/flag_red.gif /img/samples/color_red.gif /img/samples/color_yellow.gif /img/samples/color_green.gif /img/samples/light_green.gif /img/samples/light_yellow.gif /img/samples/light_red.gif /img/samples/stars_100.gif /img/samples/stars_200.gif /img/samples/stars_300....
5 comments
Read more

Lightning: Generate PDF from Lightning components with in-memory data

I'm sure as everyone is diving into lightning components development, they are getting acquainted with the nuances of the Lightning components framework. As well as, its current limitations. Being a new framework, this is bound to happen. Although we have our users still using salesforce classic, we have started using lightning components framework our primary development platform and Visualforce is considered primarily for rendering lightning components within Classic Service console. Recently, while re-architecting a critical module, we encountered a problem wherein we needed to generate PDF from lightning components. Now, being Javascript intensive framework, it has limited room for such features (may be included in future roadmap). As of now, there is no native feature within the lightning framework to do so (at least I didn't find anything). Common Scenario - Create Visualforce page to retrieve data and generate PDF For scenarios where the data exist within Sa...
2 comments
Read more

Sneak Peek: Checkpoints (a.k.a. Simulated Breakpoints)

What? Simulated breakpoints a.k.a. checkpoints enable developers to assign breakpoints to assess stack values at that point of execution. Where? Simulated breakpoints are available in new Developer console.  Why? At many occasions developers need to assess variable/ instance values during execution. This comes in very handy especially when debugging something in production wherein developers cannot add "system.debug" statements at their will. With breakpoints, developers can very well place breakpoints at desired code locations and execute the code to get breakpoint results How? To create checkpoints, open a class/ trigger in developer console and click on left hand side (just next to line no.). Once added, you can view your breakpoints in "Checkpoint Locations" sub tab within Checkpoints tab.  Each execution of class/ trigger generates Checkpoint data in "Checkpoints" sub tab. Double click on the individual checkpoint log, to view correspondin...
Post a Comment
Read more