We all know that creating temp tables in sql server no matter whether a global/local is so easy. Ofcourse it's a Trigger that gets enabled after insertion of a record. The above trigger is such a simple trigger used to keep track of the number of employees in an organistaion.
INSERT INTO ORG_EMP_SIZE SELECT COUNT(*) FROM EMPLOYEE
#Db2 dbvisualizer create stored procedure how to#
Hope this helps to have an understanding on how to create and run procedures in DB2.ĬREATE OR REPLACE TRIGGER TRIGGER_EXAMPLEįOR INC AS SELECT COUNT(*) AS COUNT_TEST FROM ORG_EMP_SIZEįOR INC AS SELECT COUNT(*) AS EMP_COUNT FROM EMPLOYEE If you notice, the record with an employee_id '0' didnt get inserted into the table EMP. Now lets execute the procedure to see how it works. )SELECT SUBSTR(PRM,1,3),SUBSTR(PRM,5,5) FROM CTE_DB2 when entered, it would pass a user defined error code(in this example '88888') you defined to an output variable that can be used in the called envirnoment for validations. The above simple procedure allows you to enter any number as employee id except 0. INSERT INTO EMP VALUES (V_EMP_ID, V_EMP_NAME) SET MESSAGE_TEXT ='INCORRECT EMPLOYEE_ID' Lets try to create a procedure that handles exception while performing any DML statement.ĬREATE OR REPLACE PROCEDURE EXCEPTION_HANDLING(V_EMP_ID INTEGER,V_EMP_NAME VARCHAR(30),OUT O_V_OUT VARCHAR(50))ĭECLARE SQLSTATE CHAR(5) DEFAULT '00000' It holds the same in any programming language or database. Now lets do something more interesting and handle exceptions in our procedures.What's exception? Well, there are lots of links that provides you an answer to that question. Lets create another table EMP2 having similar structure to EMPĬREATE OR REPLACE PROCEDURE PRC_SAMPLE4()ĬSR1 CURSOR FOR SELECT EMPID,EMPNAME FROM EMP Let's move on and create a cursor and see how it works in DB2. Parameter Value : JIMMY RECORD LOADED INTO EMP TABLEĮxample 4: Sample Stored Procedure with CursorsĪlright. Set o_PARAM=v_PARAM || ' RECORD LOADED INTO EMP TABLE' SELECT 1 into v_check from EMP WHERE EMPNAME=v_PARAM Lets create a stored procedure that has input as well as output parameters in it.ĬREATE OR REPLACE PROCEDURE PRC_SAMPLE3(IN PARM VARCHAR(30),OUT o_PARAM VARCHAR(200)) INSERT INTO EMP SELECT v_INT+1,v_PARAM FROM SYSIBM.SYSDUMMY1 Įxecute the stored proc using the below command.Įxample 3: Sample Stored Procedure with input and output parameters in it Now lets create a stored procedure that has parameters in it.Example 2 illustrates a stored procedure having an input parameter.ĬREATE OR REPLACE PROCEDURE PRC_SAMPLE2(IN PARAMETER1 VARCHAR(30)) Commands Entered -Įxample 2: Sample Stored Procedure with input parameters passed Once compiled, You can go ahead run the procedure PROC_SAMPLE1() using the below command. NOTE: Before you even try to compile the stored procedure, Please do make sure you change the default delimiter to any special character other than semicolon ' ' I have created a sample table by name EMP to illustrate the examples.Įxample 1 : Sample Stored Procedure with no parameters passed when calledĬREATE OR REPLACE PROCEDURE PROC_SAMPLE1()
Lets start with a simple stored procedure and understand how to create one,execute one. I take this opportunity to share some of the knowledge on plsql that helps a beginner to understand how to create/execute procedures/functions. You get to see as many links and Pdf's online,but most of them do not cover procedures with examples in DB2. I have been working on Oracle/Plsql, Sql Server for over a long period and got an opportunity to work on Db2. 5+ million downloads.Ĭheck some case studies and user testimonials.How to Create DB2 Stored Procedures/Triggers with Examples Users in all segments and industries with more than 25,000 customers in 145 countries. DbVisualizer integrates transparently with the operating system being used. Users only need to learn and master one application. With its easy-to-use and clean interface, DbVisualizer has proven to be one of the most cost effective database tools available, yet to mention that it runs on all major operating systems and supports all major RDBMS that are available. DbVisualizer is a feature rich, intuitive multi-database tool for developers, analysts and database administrators, providing a single powerful interface across a wide variety of operating systems.
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