What is the use of exception handling in SQL?

To handle exception in Sql Server we have TRY.. CATCH blocks. We put T-SQL statements in TRY block and to handle exception we write code in CATCH block. If there is an error in code within TRY block then the control will automatically jump to the corresponding CATCH blocks.

What are the types of exceptions in PL SQL?

There are three types of exceptions: Predefined exceptions are error conditions that are defined by PL/SQL. Non-predefined exceptions include any standard TimesTen errors. User-defined exceptions are exceptions specific to your application.

What do you mean by exception handling explain?

In computing and computer programming, exception handling is the process of responding to the occurrence of exceptions – anomalous or exceptional conditions requiring special processing – during the execution of a program.

Which keywords are used to handle exceptions?

The “throw” keyword is used to throw an exception. The “throws” keyword is used to declare exceptions.

What is @@ in SQL Server?

In SQL Server, symbol @@ is prefixed to global variables. The server maintains all the global variables. Global variable names begin with a @@ prefix. You do not need to declare them, since the server constantly maintains them. They are system-defined functions and you cannot declare them.

What is exception handling in oops?

An exception is a problem that arises during the execution of a program. Exceptions provide a way to transfer control from one part of a program to another. C++ exception handling is built upon three keywords: try, catch, and throw. throw − A program throws an exception when a problem shows up.

What are the advantages of exception handling?

Advantage 1: Separating Error-Handling Code from “Regular” Code. Exceptions provide the means to separate the details of what to do when something out of the ordinary happens from the main logic of a program. In traditional programming, error detection, reporting, and handling often lead to confusing spaghetti code.