You need the relationship name to perform inner SOQL query. For example, if you are going to perform a query to get Accounts along with their contacts then your query will be something like –

Select Id, Name,(Select Id, LastName from Contacts) from Account.

Developer Sandbox
A Developer sandbox is intended for development and testing in an isolated environment. A Developer Sandbox includes a copy of your production org’s configuration (metadata).

Developer Pro Sandbox
Use a Developer Pro sandbox to handle more development and quality assurance tasks and for integration testing or user t…[Read more]

Sometimes we need make apex thread to sleep for a while, sush as testing if the soql with [For Update] works,and as we know the sfdc do not offer a method to sleep the thread.

A CRON expression is basically a string of five or six fields separated by white spaces that represents a set of times, normally as a schedule to execute some routine.

These are the values for the expression:-

It is mainly useful to display thr records. You can customize the appearance using CSS styles, in which case the generated text is wrapped in an HTML <span> tag.

It is useful for customization rather than using pageblock tab for CSS and JS.

Its Syntax is:-

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Freezing only stops the user from being able to login. Freezing user accounts doesn’t frees the user licenses available for use in your organization. We have to deactivate the user to free the license in Salesforce

Rerender is used to refresh a particular section of the visualforce page. We have to just mention the id of the page section (in the Rerender attribute) that needs to be refreshed and Action poller acts as a timer and used to send an AJAX request to the server depending on the time interval.

Step 1: – Create a VF page with standard controller and put it into the page layout hidden

Step 2:- Create a button with

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It allows you to upload your content that you can reference in a Visualforce page.

It includes:-

• .zip and .jar files
• images style sheets
• JavaScript
• and other various files.

To reference a stand-alone file, use $Resource.<resource_name> as a merge field, In this <resource_name> is the name you specified when you uploaded the…[Read more]