Informix update using database stored procedures

Database stored procedures that only perform updates and do not return a result set are handled in much the same way as procedures that return a result set. The only difference is that after the EXECUTE procedure_name statement executes, no result set is pending and no CLOSE statement is required.

Using the SQLCode property

If you know that a particular procedure can never return a result set, only the EXECUTE statement is required. If there is a procedure that may or may not return a result set, you can test the SQLCode property of the referenced transaction object  for +100 (the code for not found) after the EXECUTE.

This table shows all possible values for SQLCode after an EXECUTE:

Return code



The EXECUTE PROCEDURE was successful and a result set is pending. Regardless of the number of FETCH statements executed, the procedure must be explicitly closed with a CLOSE statement.

This code is returned even if the result set is empty.


Fetched row not found


The EXECUTE was not successful and no result set was returned.

Example 1

This example illustrates how to execute a database stored procedure that does not return a result set:

// good_employee is an Informix stored procedure. 
// Declare the procedure.
DECLARE good_emp_p 1roc PROCEDURE FOR good_employee;
EXECUTE good_emp_proc;

// Test return code. Allow for +100 since you do 
// not expect a result set.
if SQLCA.sqlcode = -1 then

// Issue error message since it failed.
   MessageBox("Stored Procedure Error!", &
end if 

Example 2

This example illustrates how to pass parameters to a database stored procedure that returns a result set. Emp_id_var has been set elsewhere to 691:

// Get_employee is an Informix stored procedure.
// Declare the procedure.
   get_employee @emp_id_parm = :emp_id_var;

// Declare a destination variable for emp_name
string   emp_name_var

// Execute the stored procedure using the 
// current value for emp_id_var. 
EXECUTE get_emp_proc;

// Test return code to see if it worked.
if SQLCA.sqlcode = 0 then

// We got a row, so fetch it and display it.
   FETCH get_emp_proc INTO :emp_name_var;

// Display the employee name.
   MessageBox("Got my employee!",emp_name_var)

// You are all done, close the procedure. 
   CLOSE Get_emp_proc; 
end if