Question

I have an stored procedure that get executed after insert and update. I need to print all variables values but only when user press on a print button (user request)

In theory what is the best way to return variable values ? I use Delphi.

thanks

Answer 1

There are two ways to return some values from SP:

1) make selectable SP:

CREATE PROCEDURE select_sp
  RETURNS (A INTEGER)
AS
BEGIN
  A = 1;
  SUSPEND;
END

Note usage of SUSPEND keyword. You can access return values of selectable procedure using regular SELECT operator:

SELECT * FROM select_sp

2) make executable SP:

CREATE PROCEDURE exec_sp
  RETURNS (A INTEGER)
AS
BEGIN
  A = 1;
END

Then you need TIBStoredProc component in your Delphi code in order to invoke the procedure and gets its return parameters. Use ParamByName method.