SAP HANA：如何在嵌套过程引发的过程中捕获SQL异常？

Question

I have a SQL procedure which throws an exception in particular cases:

SIGNAL EMPTY_REQ_ATTR SET message_text = 'my mega error message';

This procedure has an exit handler:

DECLARE EMPTY_REQ_ATTR CONDITION;
DECLARE EXIT HANDLER FOR EMPTY_REQ_ATTR RESIGNAL EMPTY_REQ_ATTR;

This SQL procedure is called in another SQL procedure where I try to catch this exception like this:

DECLARE EXIT HANDLER FOR SQLEXCEPTION
BEGIN
    errors = SELECT 400 AS http_code, ::SQL_ERROR_MESSAGE AS message FROM dummy;
END;

But in debug I see that exit handler only works in nested procedure. Breakpoint at DECLARE EXIT HANDLER FOR SQLEXCEPTION not working.

Answer 1

As I understand you have already caught this exception in your nested procedure and exception did not get thrown again. I think, you can remove exception handler from nested procedure or throw exception from it.