Problem: Calling stored procedure dynamically from PB Script
Situation:
I have a Customer table. For each customer one stored procedure is assigned which is saved in a column in the Customer table.
When I am viewing a customer, then respective stored procedure has to be called. There are 1000 customers and each customer has his own stored procedure, so there are 1000 stored procedures.
Each of these stored procedures accept 3 string arguments and return one integer value.
Ex.
String ls_Cust_sp_name
ls_Cust_sp_name = 'sp_macdonalds_budget' // This value is retrieved from the table for the selected customer
// Standard way of calling a stored procedure, where the stored proc actual name is called,
// DECLARE lsp_validate_sp PROCEDURE FOR sp_macdonalds_budget(:ls_B
// EXECUTE lsp_validate_sp;
DECLARE lsp_validate_sp PROCEDURE FOR ls_Cust_sp_name(:ls_Budget
EXECUTE lsp_validate_sp;
FETCH lsp_validate_sp INTO :li_Retn_Val;
How can I call the stored procedure in an optimized way without using CHOOSE... Case or any other loops. There can be more than 1000 customers and stored procedures.
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You should look up Dynamic SQL Format 3 in the PowerBuilder help. It has exactly what you want with examples. One example is as follows:
DECLARE my_proc DYNAMIC PROCEDURE FOR SQLSA ;
integer Emp_id_var
string Emp_state_var
PREPARE SQLSA FROM "emp_select @stateparm=?" ;
// emp_select is a stored procedure
// Set variable to pass to SP
Emp_state_var = "MA"
EXECUTE DYNAMIC my_proc USING :Emp_state_var ;
FETCH my_proc INTO :Emp_id_var ;
CLOSE my_proc ;
Mike
Business Accounts
Answer for Membership
by: sandeep_patelPosted on 2006-11-28 at 23:10:19ID: 18034858
Hi,
Try this...
string ls_sql,ls_spname
ls_spname = 'sp_macdonalds_budget'
ls_sql = "execute " + ls_spname + " ( " + ls_Budget_ID+ "," + ls_Status_ID + "," + ls_Resp_Person + ")"
execute immediate :ls_sql using sqlca;
Hope this will work but I am not sure how you can get return value. Instead pass one value as reference i mean as out parameter and i think then you will be able to get that value once this statement is executed.
Regards,
Sandeep