Error Stored Procedure Sybase
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handling is different in the Watcom-SQL and Transact-SQL dialects. By default, Watcom-SQL dialect procedures exit when they encounter an error, returning SQLSTATE sybase stored procedure error handling and SQLCODE values to the calling environment. You can build explicit
Sample Stored Procedure Sybase
error handling into Watcom-SQL stored procedures using the EXCEPTION statement, or you can instruct the procedure
Stored Procedure In Sybase Example
to continue execution at the next statement when it encounters an error, using the ON EXCEPTION RESUME statement. When a Transact-SQL dialect procedure encounters an error,
How To Execute Stored Procedure In Sybase With Parameter
execution continues at the following statement. The global variable @@error holds the error status of the most recently executed statement. You can check this variable following a statement to force return from a procedure. For example, the following statement causes an exit if an error occurs: IF @@error != 0 RETURN When the stored procedure oracle procedure completes execution, a return value indicates the success or failure of the procedure. This return status is an integer, and can be accessed as follows: DECLARE @status INT EXECUTE @status = proc_sample IF @status = 0 PRINT 'procedure succeeded' ELSE PRINT 'procedure failed' Table A-2 describes the built-in procedure return values and their meanings: Table A-2: Built-in procedure return values Value Meaning 0 Procedure executed without error -1 Missing object -2 Data type error -3 Process was chosen as deadlock victim -4 Permission error -5 Syntax error -6 Miscellaneous user error -7 Resource error, such as out of space -8 Nonfatal internal problem -9 System limit was reached -10 Fatal internal inconsistency -11 Fatal internal inconsistency -12 Table or index is corrupt -13 Database is corrupt -14 Hardware error The RETURN statement can be used to return other integers, with their own user-defined meanings. Copyright © 2009. Sybase Inc. All rights reserved. View this document as PDF
By default, Watcom-SQL dialect procedures exit when they encounter an error, returning SQLSTATE and SQLCODE values to the calling environment. You can stored procedure powerbuilder build explicit error handling into Watcom-SQL stored procedures using the stored procedure db2 EXCEPTION statement, or you can instruct the procedure to continue execution at the next statement when stored procedure informix it encounters an error, using the ON EXCEPTION RESUME statement. When a Transact-SQL dialect procedure encounters an error, execution continues at the following statement. The global variable http://infocenter.sybase.com/help/topic/com.sybase.infocenter.dc38151.1510/html/iqrefbb/Tseh.htm @@error holds the error status of the most recently executed statement. You can check this variable following a statement to force return from a procedure. For example, the following statement causes an exit if an error occurs: IF @@error != 0 RETURN When the procedure completes execution, a return value indicates the success or http://infocenter.sybase.com/help/topic/com.sybase.infocenter.dc38151.1540/doc/html/san1278453590072.html failure of the procedure. This return status is an integer, and can be accessed as follows: DECLARE @status INT EXECUTE @status = proc_sample IF @status = 0 PRINT 'procedure succeeded' ELSE PRINT 'procedure failed' This table describes the built-in procedure return values and their meanings: Built-in procedure return valuesValue Meaning 0 Procedure executed without error -1 Missing object -2 Data type error -3 Process was chosen as deadlock victim -4 Permission error -5 Syntax error -6 Miscellaneous user error -7 Resource error, such as out of space -8 Nonfatal internal problem -9 System limit was reached -10 Fatal internal inconsistency -11 Fatal internal inconsistency -12 Table or index is corrupt -13 Database is corrupt -14 Hardware error The RETURN statement can be used to return other integers, with their own user-defined meanings. Using the RAISERROR Statement in Procedures The RAISERROR statement is a Transact-SQL statement for generating user-defined errors. It has a similar function to the SIGNAL statement. Transact-SQ
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of http://stackoverflow.com/questions/12808846/error-handling-in-sybase this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question http://www.sommarskog.se/error-handling-II.html x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Error stored procedure Handling in Sybase up vote 2 down vote favorite Is there a way to handle errors in SYBASE, such as the TRY-CATCH block you can use in MS SQL Server, Oracle, etc? I've searched the web and the only option I found was the global variable @@error, but it didn' work as I expected, for example, the following code: begin tran update table1 stored procedure in set name = 'new name' where name = 'old name' update table2 set id = 1 where id = 30 -- suppose id has a unique constraint and there's already a row with id = 1 IF @@error = 0 begin print 'commited' commit end else begin print 'rolled back' rollback end The will indeed rollback somehow, because the name I've changed on table1 keeps the old value as I've tested here, but it doesn't print the messages, or execute any instructions I put after the instructions that causes the error Can anyone help me in this? Do you know how does Sybase error handling actually works? sql try-catch sybase share|improve this question edited Jul 26 at 17:41 asked Oct 9 '12 at 21:41 drigoangelo 931110 you could setup an if block on the update so that there wouldn't be an error. if(not exists(select 1 from table2 where id = 1))begin/* your update code here*/end –scrappedcola Oct 9 '12 at 22:11 Thanks for your reply, but I need to do something like that in a script that will execute a lot of inserts/updates and a
how you should implement error handling when you write stored procedures, including when you call them from ADO. The other article, Error Handling in SQL Server - a Background, gives a deeper description of the idiosyncrasies with error handling in SQL Server and ADO. That article is in some sense part one in the series. However, you can read this article without reading the background article first, and if you are not a very experienced user of SQL Server, I recommend you to start here. In places there are links to the background article, if you want more information about a certain issue. Note: this article is aimed at SQL2000 and earlier versions of SQL Server. SQL2005 offers significantly improved methods for error handling with TRY-CATCH. This article is not apt if you are using SQL 2005 or later. I don't have a complete article on error handling for SQL 2005, but I have an unfinished article with a section Jumpstart Error Handling that still can be useful. Table of Contents: Introduction The Presumptions A General Example Checking Calls to Stored Procedures The Philosophy of Error Handling General Requirements Why Do We Check for Errors? When Should You Check @@error? ROLLBACK or not to ROLLBACK - That's the Question SET XACT_ABORT ON revisited Error Handling with Cursors Error Handling with Triggers Error Handling with User-Defined Functions Error Handling with Dynamic SQL Error Handling in Client Code What to Do in Case of an Error? Command Timeouts Why is My Error Not Raised? Getting the Return Value from a Stored Procedure Acknowledgements and Feedback Revision History Introduction Error handling in stored procedures is a very tedious task, because T-SQL offers no exception mechanism, or any On Error Goto. All you have is the global variable @@error which you need to check after each statement for a non-zero value to be perfectly safe. If you call a stored procedure, you also need to check the return value from the procedure. In fact, this is so extremely tedious, so you will find that you will have to make compromises and in some situations assume that nothing can go wrong. Still, you cannot just ignore checking for errors, because ignoring an error could cause your updates to be incomplete, and compromise the integrity of your data. Or it can cause a transaction to run for much longer time than intended, leading to blocking and risk that the user loses all his updates when he logs out. In the first section, I summarize the most important points of the material in the background article, so you know under which presumption