---
title: "How to handle errors using TRY...CATCH block in SQL Server?"  
description: "How to handle errors using TRY...CATCH block in SQL Server?"  
author: "Sandra Emily"  
published: 2024-07-15  
updated: 2024-07-16  
canonical: https://www.mindstick.com/forum/160903/how-to-handle-errors-using-try-catch-block-in-sql-server  
category: "mssql server"  
tags: ["mssql server", "sql server", "sql", "sqlexception"]  
reading_time: 3 minutes  

---

# How to handle errors using TRY...CATCH block in SQL Server?

How to [handle errors](https://www.mindstick.com/forum/157886/how-do-you-handle-errors-and-exceptions-in-angularjs-applications) using TRY...CATCH [block](https://www.mindstick.com/forum/157599/explain-the-process-control-block-pcb-in-the-operating-system) in SQL Server?

## Replies

### Reply by Ashutosh Patel

#### SQL Server Try….Catch Block

Error handling in SQL Server using `TRY...CATCH` blocks is a structured way of handling exceptions that occur when executing T-SQL code. Here's how you can make the most of `TRY...CATCH`

## Syntax

```plaintext
BEGIN TRY
   -- T-SQL statements that might cause an error
END TRY
BEGIN CATCH
   -- Error handling code
END CATCH
```

\
**Example Usage**\
Consider a scenario where you want to insert a record into a table, but you have to gracefully [handle](https://www.mindstick.com/articles/311004/suede-skillet-handle-cover) any potential [errors](https://answers.mindstick.com/qa/116170/fresh-fir-against-gandhis-in-national-herald-case-cover-up-for-ed-s-own-errors).

```plaintext
BEGIN TRY
   BEGIN TRANSACTION; -- Start a transaction (if needed)

   -- SQL statements that might cause an error
   INSERT INTO YourTable (Column1, Column2) VALUES (Value1, Value2);
   COMMIT TRANSACTION; -- Commit the transaction
END TRY
BEGIN CATCH
   IF @@TRANCOUNT > 0
       ROLLBACK TRANSACTION; -- Rollback the transaction if there is an active one
   -- Error handling: You can log the error, raise an alert, or perform other actions
   PRINT 'Error Message: ' + ERROR_MESSAGE();
   PRINT 'Error Severity: ' + CAST(ERROR_SEVERITY() AS VARCHAR(500));
   PRINT 'Error State: ' + CAST(ERROR_STATE() AS VARCHAR(500));
   PRINT 'Error Number: ' + CAST(ERROR_NUMBER() AS VARCHAR(500));
END CATCH
```

## Explanation

- **TRY Block-** The `BEGIN TRY` block covers special **T-SQL** statements that can throw an error.
- **CATCH Block-** If an error occurs in the TRY block, execution jumps to the `BEGIN CATCH` block.
- **Error Functions-** In the `CATCH`section, you can use the functions `ERROR_MESSAGE()`, `ERROR_SEVERITY()`, `ERROR_STATE()`, and `ERROR_NUMBER()` to get information about the error that occurred These functions help in documenting the problem and in research.
- **Transaction Handling-** It is good practice to build potentially risky operations (such as **insert**, **update**, **delete**) into a transaction (`BEGIN TRANSACTION`, `COMMIT`, `ROLLBACK`) to ensure data integrity If errors occur, they are reversible after the transaction in a `CATCH` internal clause to maintain synchronization.

## Logging and Notification

Depending on the needs of your application, you can extend error handling to log errors in a table, send notifications (via email, alerts, etc.), or take other appropriate actions

## Nesting of TRY…CATCH blocks

You can nest `TRY…CATCH` blocks to handle errors at different levels of your code execution. For example, a nested `TRY...CATCH` may handle a particular error differently from an outer block.

**Error Propagation-** If an error is not caught in the `TRY...CATCH` block, it propagates to the next higher `TRY...CATCH` block or to the calling application.

With proper use of `TRY…CATCH` blocks, you can make your SQL Server code more robust and fault-tolerant, ensuring that your database operations maintain integrity and reliability even under adverse conditions.

**Also, Read:** [How do I write CRUD operations to modify data in SQL Server tables?](https://www.mindstick.com/forum/160899/how-do-i-write-crud-operations-to-modify-data-in-sql-server-tables)


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