Error Handling Mysql Stored Procedure
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Syntax ALTER TABLE Partition Operations ALTER TABLE Online Operations in MySQL Cluster ALTER TABLE Examples ALTER TABLESPACE Syntax ALTER VIEW Syntax CREATE DATABASE Syntax CREATE EVENT Syntax CREATE FUNCTION Syntax CREATE INDEX Syntax http://dev.mysql.com/doc/en/declare-handler.html CREATE LOGFILE GROUP Syntax CREATE PROCEDURE and CREATE FUNCTION Syntax CREATE SERVER Syntax CREATE TABLE Syntax CREATE TABLE ... LIKE Syntax CREATE TABLE ... SELECT Syntax Using FOREIGN KEY Constraints Silent Column Specification Changes CREATE TABLESPACE Syntax CREATE TRIGGER Syntax CREATE VIEW Syntax DROP DATABASE Syntax DROP EVENT Syntax DROP FUNCTION Syntax DROP INDEX Syntax DROP LOGFILE GROUP Syntax DROP PROCEDURE and DROP FUNCTION Syntax DROP SERVER Syntax https://dev.mysql.com/doc/refman/5.6/en/get-diagnostics.html DROP TABLE Syntax DROP TABLESPACE Syntax DROP TRIGGER Syntax DROP VIEW Syntax RENAME TABLE Syntax TRUNCATE TABLE Syntax Data Manipulation Statements CALL Syntax DELETE Syntax DO Syntax HANDLER Syntax INSERT Syntax INSERT ... SELECT Syntax INSERT DELAYED Syntax INSERT ... ON DUPLICATE KEY UPDATE Syntax LOAD DATA INFILE Syntax LOAD XML Syntax REPLACE Syntax SELECT Syntax SELECT ... INTO Syntax JOIN Syntax UNION Syntax Subquery Syntax The Subquery as Scalar Operand Comparisons Using Subqueries Subqueries with ANY, IN, or SOME Subqueries with ALL Row Subqueries Subqueries with EXISTS or NOT EXISTS Correlated Subqueries Subqueries in the FROM Clause Subquery Errors Optimizing Subqueries Rewriting Subqueries as Joins UPDATE Syntax MySQL Transactional and Locking Statements START TRANSACTION, COMMIT, and ROLLBACK Syntax Statements That Cannot Be Rolled Back Statements That Cause an Implicit Commit SAVEPOINT, ROLLBACK TO SAVEPOINT, and RELEASE SAVEPOINT Syntax LOCK TABLES and UNLOCK TABLES Syntax Interaction of Table Locking and Transactions LOCK TABLES and Triggers Table-Locking Restrictions and Conditions SET TRANSACTION Syntax XA Transactions XA Transaction SQL Syntax XA Transaction States Replication Statements SQL Statements for Controlling Master Servers PURGE BINARY LOGS Syntax RESET MASTER Syntax SET sql_log_bin Syntax SQL Statements for Controlling Slave Servers CHANGE MASTER TO Syntax MASTER_POS_WAIT
here for a quick overview of the site Help Center Detailed answers to any questions you might http://stackoverflow.com/questions/7764887/mysql-stored-procedure-error-handling have Meta Discuss the workings and policies of this site About http://www.dbrnd.com/2015/05/mysql-error-handling/ 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 x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million stored procedure programmers, just like you, helping 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 of the last executed statement within a MySQL stored procedure. This means mysql stored procedure 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 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
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 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 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 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. *****************************************************************/BEGIN DECLARE CONTINUE HANDLER FOR SQLEXCEPTION SELECT 'Error occured'; INSERT INTO Employee.tbl_EmployeeDetails (EmpID,EmpName ,Email