Notes
As part of a trigger execution in Salesforce, several types of exceptions can be thrown. Some of the most common exceptions include:
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DML Exception - This exception is thrown when a Data Manipulation Language (DML) operation fails, such as an insert, update, or delete operation. The exception message will provide information about the cause of the failure.
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Query Exception - This exception is thrown when a SOQL query fails, such as when a query returns too many records or when a query includes invalid syntax.
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Apex Exception - This is a general exception that can be thrown in any Apex code, including triggers. Apex exceptions are typically thrown when there is a runtime error, such as a null pointer exception or an arithmetic exception.
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Limit Exception - This exception is thrown when a governor limit is exceeded. Governor limits are limits on the amount of resources, such as CPU time or database queries, that a single transaction can consume.
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Custom Exception - This is an exception that is defined by the developer in their Apex code. Custom exceptions can be used to handle specific errors or situations in the trigger code.
It's important for developers to handle exceptions appropriately in their trigger code to avoid unexpected behavior or errors for end-users. This can involve logging exception details for troubleshooting purposes, displaying user-friendly error messages, or taking specific actions to handle different types of exceptions.