Mysql Stored Procedure Error Logging
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here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies exception handling in mysql stored procedure example of this site About Us Learn more about Stack Overflow the company mysql get diagnostics in stored procedure Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges mysql stored procedure get error message Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a try catch in mysql stored procedure minute: Sign up MySQL Stored Procedure Error Handling up vote 10 down vote favorite 5 I believe there is nothing currently available in MySQL that allows access to the SQLSTATE of the last executed statement within a MySQL stored procedure. This means that when a generic SQLException is raised within a stored procedure it is hard/impossible to derive the exact nature of
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the error. Does anybody have a workaround for deriving the SQLSTATE of an error in a MySQL stored procedure that does not involve declaring a handler for every possible SQLSTATE? For example - imagine that I am trying to return an error_status that goes beyond the generic "SQLException happened somewhere in this BEGIN....END block" in the following: DELIMITER $$ CREATE PROCEDURE `myProcedure`(OUT o_error_status varchar(50)) MY_BLOCK: BEGIN DECLARE EXIT handler for 1062 set o_error_status := "Duplicate entry in table"; DECLARE EXIT handler for 1048 set o_error_status := "Trying to populate a non-null column with null value"; -- declare handlers ad nauseum here.... DECLARE EXIT handler for sqlexception set o_error_status:= "Generic SQLException. You'll just have to figure out the SQLSTATE yourself...." ; -- Procedure logic that might error to follow here... END MY_BLOCK$$ Any tips? PS I am running MySQL 5.1.49 mysql stored-procedures error-handling share|improve this question edited Oct 14 '11 at 10:29 asked Oct 14 '11 at 8:19 Tom Mac 6,76621524 add a comment| 3 Answers 3 active oldest votes up vote 6 down vote accepted GET DIAGNOSTICS is available in 5.6.4 See http://dev.mysql.com/doc/refman/5.6/en/get-diagnostics.html share|improv
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Mysql Stored Procedure Raise Error
site About Us Learn more about Stack Overflow the company Business Learn more message_text mysql about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss how to get error message in mysql Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up How to get http://stackoverflow.com/questions/7764887/mysql-stored-procedure-error-handling exception message on stored procedure in MySQL 5.5 up vote 4 down vote favorite 3 I'm using MySQL 5.5.To get the exception message on MySQL 5.6 is using GET DIAGNOSTIC function. Is there any similar function in MySQL 5.5 ,.? The project I'm working is already use MySQL version 5.5. mysql stored-procedures exception-handling share|improve this question asked Sep 6 '12 at 10:48 Praditha 50721932 http://stackoverflow.com/questions/12298391/how-to-get-exception-message-on-stored-procedure-in-mysql-5-5 add a comment| 1 Answer 1 active oldest votes up vote 4 down vote accepted You could try using SHOW ERROR and SHOW WARNING. To see the last error or warning you could use it as: SHOW ERRORS LIMIT 1 -- for SQL-state > 2 SHOW WARNINGS LIMIT 1 -- for SQL-state 1,2 In order to prevent listing each and every error, you can handle a class of SQL-errors like so: SQLWARNING is shorthand for the class of SQLSTATE values that begin with '01'. NOT FOUND is shorthand for the class of SQLSTATE values that begin with '02'. This is relevant only within the context of cursors and is used to control what happens when a cursor reaches the end of a data set. If no more rows are available, a No Data condition occurs with SQLSTATE value 02000. To detect this condition, you can set up a handler for it (or for a NOT FOUND condition). An example is shown in Section 12.7.5, “Cursors”. This condition also occurs for SELECT ... INTO var_list statements that retrieve no rows. SQLEXCEPTION is shorthand for the class of SQLSTATE values that do not beg
DevJolt Awards Channels▼ CloudMobileParallel.NETJVM LanguagesC/C++ToolsDesignTestingWeb DevJolt Awards Database Tweet Permalink Debugging MySQL Stored Procedures By Brian J. Tarbox, June 22, 2009 Being able to do low- or no-cost logging with Stored Procedures is an http://www.drdobbs.com/database/debugging-mysql-stored-procedures/218100564 extremely useful technique Brian Tarbox is a Principal Staff Engineer in http://www.mysqltutorial.org/mysql-error-handling-in-stored-procedures/ Motorola's Home and Network Mobility group. Stored Procedures are programs that execute within a database server. They are usually written in a database language such as PL/SQL or ANSI SQL:2003 SQL/PSM. (Granted, some database servers do support Java stored procedures, but I don't examine them stored procedure here.) There are any number of books for learning to write Stored Procedures -- MySQL Stored Procedure Programming, by Guy Harrison, and Teach Yourself PL/SQL in 21 Days,by Jonathan Gennick and Tom Luers, come to mind), but there are a handful of general reasons to write code in a stored procedure: The logic being implemented might be mysql stored procedure database logic and so a database language is closer to the problem domain than a general purpose language like Java. A stored procedure can be significantly faster than a Java program which might make multiple calls to the database. A stored procedure can be more secure. Regardless of the reasons for choosing to write a stored procedure, the problem remains of how to debug one. What if you could debug in both development and production at little to no cost to the performance of the Stored Procedures? Traditional debuggers do not generally work with stored procedures which can leave a developer with a fast and broken procedure executing within their database server. Approaches That Don't Work Debug the SQL in your Stored Procedure. This approach works on the assumption the main logic of your Stored Procedures is the actual DDL and DML within the procedure, in other words, the queries, inserts and so on. It assumes that the rest of the Stored Procedures is largely scaffolding t
to handle exceptions or errors encountered in stored procedures.When an error occurs inside a stored procedure, it is important to handle it appropriately, such as continuing or exiting the current code block’s execution, and issuing a meaningful error message.MySQL provides an easy way to define handlers that handle from general conditions such as warnings or exceptions to specific conditions e.g., specific error codes.Declaring a handlerTo declare a handler, you use the DECLARE HANDLER statement as follows: DECLARE action HANDLER FOR condition_value statement;1DECLARE action HANDLER FOR condition_value statement;If a condition whose value matches the condition_value , MySQL will execute the statement and continue or exit the current code block based on the action . The action accepts one of the following values:CONTINUE : the execution of the enclosing code block ( BEGIN … END ) continues.EXIT : the execution of the enclosing code block, where the handler is declared, terminates.The condition_value specifies a particular condition or a class of conditions that activates the handler. The condition_value accepts one of the following values:A MySQL error code.A standard SQLSTATE value. Or it can be an SQLWARNING , NOTFOUND or SQLEXCEPTION condition, which is shorthand for the class of SQLSTATE values. The NOTFOUND condition is used for a cursor or SELECT INTO variable_list statement.A named condition associated with either a MySQL error code or SQLSTATE value.The statement could be a simple statement or a compound statement enclosing by the BEGIN and END keywords.MySQL error handling examplesLet’s look into several examples of declaring handlers.The following handler means that if an error occurs, set the value of the has_error variable to 1 and continue the execution. DECLARE CONTINUE