What is dynamic result set in stored procedure?
Multiple result sets can be returned from an SQL procedure by using multiple cursors. Specify the DYNAMIC RESULT SETS clause in the CREATE PROCEDURE statement. Specify the maximum possible number of result sets likely to be returned. The number of results sets actually returned must not exceed this number.
How do you return a result set from a stored procedure?
To return a result set from an SQL procedure:
- Specify the DYNAMIC RESULT SETS clause in the CREATE PROCEDURE statement.
- DECLARE the cursor using the WITH RETURN clause.
- Open the cursor in the SQL procedure.
- Keep the cursor open for the client application – do not close it.
What is result set in Db2 stored procedure?
In addition to returning output parameters, a stored procedure can return a result set (that is, a result table associated with a cursor opened in the stored procedure) to the application that issues the CALL statement. The application can then issue fetch requests to read the rows of the result set cursor.
What is stored procedure in Db2 with example?
When an application that runs on a workstation calls a stored procedure on a Db2 server, the stored procedure updates a table based on the information that it receives from the application. Suppose that an application runs on a workstation client and calls a stored procedure A on the Db2 server at location LOCA.
What is difference between stored procedure and function?
The function must return a value but in Stored Procedure it is optional. Even a procedure can return zero or n values. Functions can have only input parameters for it whereas Procedures can have input or output parameters. Functions can be called from Procedure whereas Procedures cannot be called from a Function.
How many values can be returned from a stored procedure?
How many values can be returned from a given stored function? Explanation: In MySQL, the stored function cannot return multiple values. Instead, multiple stored functions can be written and invoked from within a single statement however, they are different from stored procedures. 3.
Can a stored procedure return multiple result sets?
Stored procedures contain IN and OUT parameters or both. They may return result sets in case you use SELECT statements. Stored procedures can return multiple result sets.
What is Cobol stored procedure?
Stored procedures are routines executed directly by a DB2 LUW Server instance, rather than indirectly via a call to a routine from within a client application. The benefits of using DB2 stored procedures over SQL calls include enhanced modularity, security, and performance.
How do I execute a stored procedure in DB2 command editor?
- Start the command line processor, and set command line processor options.
- Run SQL statements to query and modify data.
- Terminate the command line processor, and restart it with a different set of options.
- Create and call a stored procedure.
When should a stored procedure be written?
A Stored Procedure is a type of code in SQL that can be stored for later use and can be used many times. So, whenever you need to execute the query, instead of calling it you can just call the stored procedure.
Can stored procedure return multiple result sets?
How many values can be returned from a stored procedure * A 0 B 1 C 2 D 3?
Is there a way to open a result set in DB2?
But, alas, high level language programs have no way to open and process a result set (except when using the cumbersome CLI API). Phooey, that means we’ll need to duplicate the stored procedure code in an RPG friendly manner! But wait, here comes DB2 for i 7.1 to the long-anticipated rescue!
What’s new in DB2 for embedded SQL?
A great new feature in DB2 for i 7.1, the ability to do row based processing on a stored procedure result set, allows HLL embedded SQL programs to take advantage of a powerful and oft-used stored procedure feature. Michael Sansoterra is a DBA for Broadway Systems in Grand Rapids, Michigan.
What is a stored procedure in RPG programming?
You write a stored procedure to return one or more sophisticated result sets to a Java or .NET client. Everyone is (temporarily) happy. Eventually, a need arises for an RPG or COBOL program to execute this stored procedure and process the result set (s).
What happens when the cursor is closed in DB2?
Once the cursor has been closed the resources should be released by the database engine. A great new feature in DB2 for i 7.1, the ability to do row based processing on a stored procedure result set, allows HLL embedded SQL programs to take advantage of a powerful and oft-used stored procedure feature.