Re: Assertions in PL/PgSQL

On 9/23/13 11:12 AM, I wrote:

On 9/23/13 11:01 AM, Amit Khandekar wrote:

The assert levels sound a bit like a user might be confused by these levels
being present at both places: In the RAISE syntax itself, and the assert
GUC level. But  I like the syntax. How about keeping the ASSERT keyword
optional ? When we have WHEN, we anyway mean that we ware asserting that
this condition must be true. So something like this :

RAISE [ level ] 'format' [, expression [, ... ]] [ USING option =
expression [, ... ] ];
RAISE [ level ] condition_name [ USING option = expression [, ... ] ];
RAISE [ level ] SQLSTATE 'sqlstate' [ USING option = expression [, ... ] ];
RAISE [ level ] USING option = expression [, ... ];
*RAISE [ ASSERT ] WHEN bool_expression;*
RAISE ;

I'd expect RAISE .. WHEN ..;  to be the same as:

    IF .. THEN
      RAISE;
    END IF;

Should've probably proofread that one.  I meant:

  RAISE WHEN true;

would be equivalent to

  IF true THEN
    RAISE;
  END IF;

Regards,
Marko Tiikkaja