Обсуждение: Error prone compilation of stored procedure

What's the reason behind very "tolerant" error checking during stored
procedure compilation?
Why PostgreSQL allows using variable (j_var) that doesn't exists? It isn't
column name or isn't declared anywhere. Like in example below:

CREATE OR REPLACE FUNCTION test()
  RETURNS int AS
$BODY$
BEGIN

select 1 WHERE 1 > j_var;
    RETURN 2;
END;
$BODY$
  LANGUAGE plpgsql VOLATILE
  COST 100;



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pinker <pinker@onet.eu> wrote:

> What's the reason behind very "tolerant" error checking during stored
> procedure compilation?

they are not compiled but interpreted at runtime.


Andreas
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Andreas Kretschmer-2 wrote

pinker <[hidden email]> wrote: > What's the reason behind very "tolerant" error checking during stored > procedure compilation? they are not compiled but interpreted at runtime. Andreas

Pavel Stehule wrote
> PLpgSQL doesn't check a identifiers inside embedded SQL before execution.
> In this case j_var can be theoretically some SQL identifiers - the
> possibility or impossibility is not know in function validation stage.
>
> It has some plus and minus points. The plus - there are not strong
> dependency between database objects and PL code. The minus - lot of bugs
> are not detected in validation stage. But this issue can be solved by
> plpgsql_check extension https://github.com/okbob/plpgsql_check/

Thank you for the link to extension.
Another minus is that my colleagues which use to work on oracle think that
postgresql is at least one league below oracle.



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On Mon, Jul 06, 2015 at 04:52:52AM -0700, pinker wrote:
> Another minus is that my colleagues which use to work on oracle think that
> postgresql is at least one league below oracle.

I find that people who are used to any one tool always point out how
some other tool is deficient, even if they're raving about other
advantages.  This is especially the case when there are trade-offs
involved in the way a tool does a thing.  My suggestion is to point
out that if one hates $feature, one can extend Postgres to make it go
away, a capability not available in Oracle at any price.  At least, I
found that to be useful when talking to Oracle partisans.

A

--
Andrew Sullivan
ajs@crankycanuck.ca

And are your colleagues offering to pay for an Oracle license?

> On Jul 6, 2015, at 5:52 AM, pinker <pinker@onet.eu> wrote:
>
> Pavel Stehule wrote
>> PLpgSQL doesn't check a identifiers inside embedded SQL before execution.
>> In this case j_var can be theoretically some SQL identifiers - the
>> possibility or impossibility is not know in function validation stage.
>>
>> It has some plus and minus points. The plus - there are not strong
>> dependency between database objects and PL code. The minus - lot of bugs
>> are not detected in validation stage. But this issue can be solved by
>> plpgsql_check extension https://github.com/okbob/plpgsql_check/
>
> Thank you for the link to extension.
> Another minus is that my colleagues which use to work on oracle think that
> postgresql is at least one league below oracle.
>
>
>
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lup wrote
> And are your colleagues offering to pay for an Oracle license?

I would prefer to prove them it's not necessary :)



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