Re: [HACKERS] psql - add special variable to reflect the last query status

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От Tom Lane
Тема Re: [HACKERS] psql - add special variable to reflect the last query status
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Msg-id 7870.1504634891@sss.pgh.pa.us
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Ответ на Re: [HACKERS] psql - add special variable to reflect the last querystatus  (Fabien COELHO <coelho@cri.ensmp.fr>)
Ответы Re: [HACKERS] psql - add special variable to reflect the last querystatus  (Fabien COELHO <coelho@cri.ensmp.fr>)
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Fabien COELHO <coelho@cri.ensmp.fr> writes:
>> * It might be better if SQLSTATE and ERROR_MESSAGE were left
>> unchanged by a non-error query.

> Hmmm. I'm not sure. If so, ERROR_MESSAGE should be LAST_ERROR_MESSAGE 
> maybe? Then what about LAST_ERROR_SQLSTATE to go with it, and let SQLSTATE 
> & ERROR_MESSAGE reflect the last command, and ERROR is just the boolean to 
> test if it occured?

>> That would reduce the need to copy them into other variables just 
>> because you needed to do something else before printing them.  It'd save 
>> a few cycles too.

> Well, my suggestion would mean that they would be copied when an error 
> occurs, but only when it occurs, which would not be often.

Uh ... what?
        regards, tom lane



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