Mysql Stored Procedure Error Trapping
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Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping mysql error handling php each other. Join them; it only takes a 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 http://dev.mysql.com/doc/en/declare-handler.html 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 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 http://stackoverflow.com/questions/7764887/mysql-stored-procedure-error-handling 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|improve this answer answered Jan 19 '12 at 9:10 Marc Alff 4,3751343 1 Thanks! Really useful. All I've got to do now is upgrade to 5.6 ;-) –Tom Mac Jan 20 '12 at 9:05 add a comment| Did you find this question interesting? Try our newsletter Sign up for our newsletter and get our top new questions delivered to your inbox (see an example). Subscribed! Success! Please click the link in the confirmation email to activate your subscription. up vote 7 down vote I believe there is nothing curre
InterviewsMySQL InterviewsDBA ScriptSQL Server DBA ScriptPostgreSQL DBA ScriptMySQL DBA Script(: Laugh@dbrnd :)Blog Archives !Contact Me MySQL Error Handling May 21, 2015June 15, 2015 Anvesh PatelMySQL In http://www.dbrnd.com/2015/05/mysql-error-handling/ this post I will describe how to handle errors into mysql stored procedure.Whenever any exception is occurring in a stored procedure, then this is very important to handle this exception by showing proper error messages.If you do not handle the exception, then there would be chance to fail application with certain stored procedure exception in stored procedure.As per my advise, if you get an error in stored procedure, then instead of exit, you should continue without any error. Means you can show any default or custom error code or message to the application so base on this application can decide to show a proper mysql stored procedure message at user level.MySQL provides Handler to handle exception in stored procedure.Below is a full demonstration of handler with examples.12345678910/*Create Employee database for demo */CREATE DATABASE Employee;/*Create sample EmployeeDetails table.*/CREATE TABLE Employee.tbl_EmployeeDetails ( EmpID INTEGER ,EmpName VARCHAR(50),EmailAddress VARCHAR(50),CONSTRAINT pk_tbl_EmployeeDetails_EmpID PRIMARY KEY (EmpID))ENGINE = InnoDB;How to declare handler in store procedure:Syntax of Handler: 1DECLARE handler_action HANDLER FOR condition_value ... statementThree type of Handler_Action: CONTINUEEXITUNDOType of Condition Value:mysql_error_codesqlstate_valueSQLWarningSQLExceptionNotFoundHow to write handler in stored procedure ?:E.g.1234DECLARE CONTINUE HANDLER FOR SQLEXCEPTION SELECT 'Error occured';DECLARE CONTINUE HANDLER FOR SQLEXCEPTION SET IsError=1;DECLARE EXIT HANDLER FOR SQLEXCEPTION SET IsError=1;DECLARE EXIT HANDLER FOR SQLSTATE '23000' SET IsError = 1;The Above is four different handler example. Now I am going to insert duplicate value into EmpID column.12345678910111213141516171819202122232425262728293031DELIMITER //CREATE PROCEDURE Employee.usp_InsertEmployeeDetails( InputEmpID INTEGER,InputEmpName VARCHAR(50),InputEmailAddress VARCHAR(50))/****************************************************************Authors Name : Anvesh PatelCreated Date : 2015-05-20Description : This is demo stored procedure to insert record into table with proper error handling.Basically for www.dbrnd.com readers. ********