Re: Using the database to validate data

No, when you catch an insert exception , you can save the information you
needed to array or something likes that, and continue to do the next insert.
In your application, you can write codes as follows.

begin transaction
loop
try
do insert
catch exception
save error info
end loop
if have any error
print erro
rollback transaction
else
commit transaction

or you can you that in postgresql procedure.

2015-07-24 22:51 GMT+09:00 JPLapham <lapham(at)jandr(dot)org>:

> 林士博 wrote
> > If I am following correctly, you can do it in your application as
> follows.
> > 1.begin transaction
> > 2.insert each data. Catch db exception,
> > and save exception message and other information you need to array.
> > 3.in the end ,you can get all the information about the wrong data in
> > array
> > if there is any.
> > and then you can decide whether it is need to rollback or to commit.
>
> Yes, I agree that I could do that, which I believe is my "IDEA 1" from my
> original message. This method will naturally work, but it is a very slow
> iterative process because you can only catch the *first* error, after which
> new INSERTS are not allowed. If you have a data input with say 1000 record,
> and there are 50 errors, it would require 50 iterations of fixing the input
> data, running it again, to find them all.
>
>
> 林士博 wrote
> > By the way, this is about programming but not postgresql.
>
> I was hoping that there would be a way to have Postgresql run in a mode
> where it allows INSERTS within a transaction even after an error. Naturally
> when the error condition occurs, COMMIT would not be allowed at the end of
> the transaction block.
>
> But, this way, you could collect all the error information in one pass.
> Seemed postgresql related to me. :)
>
>
>
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>
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