Re: [COMMITTERS] pgsql: Add STRICT to PL/pgSQL SELECT INTO, so exceptions

Tom Lane wrote:
> Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> > Tom Lane wrote:
> >> Do we actually need different error codes for too few and too many rows?
> >> It looks to me like the only relevant standard error condition is
> >> CARDINALITY_VIOLATION, so either we throw CARDINALITY_VIOLATION for both
> >> cases or we invent nonstandard codes.
>
> > We could, and then suggest using ROW_COUNT to determine if there were
> > too few rows, or too many.
>
> SELECT INTO doesn't set ROW_COUNT ... but if we change the code to set
> FOUND before throwing the error, it'd work to tell people to check
> FOUND.
>
> (Thinks a bit...) Actually not, because if the exception catcher isn't
> in the same function as the SELECT INTO, it'll be looking at the wrong
> FOUND variable. ROW_COUNT same problem, even if we were setting it.
>
> Plan B is to invent new errcodes to match the Oracle spellings. If
> that's what we want to do, it's not that hard.

We could use:

#define ERRCODE_DATA_EXCEPTION MAKE_SQLSTATE('2','2',
or
#define ERRCODE_ERROR_IN_ASSIGNMENT MAKE_SQLSTATE('2','2',

--
Bruce Momjian http://candle.pha.pa.us
EnterpriseDB http://www.enterprisedb.com

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