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From: Thomas Markus <[email protected]>
To: [email protected]
Subject: Re: org.postgresql.util.PSQLException: ERROR: value out of range: underflow
Date: Mon, 7 Feb 2022 06:39:15 +0100
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
	<[email protected]>


Am 06.02.22 um 17:45 schrieb Tom Lane:
> Thomas Markus <[email protected]> writes:
>> a customer got the exception "org.postgresql.util.PSQLException: ERROR:
>> value out of range: underflow" without any stacktrace etc.
> I'd venture that the cause is some server-side double precision
> arithmetic that underflowed.  It's not that hard to hit, eg
>
> postgres=# select 1e-200::float8 * 1e-200::float8;
> ERROR:  value out of range: underflow
>
> 			regards, tom lane
>
>
Dave answered private here:

A double in java cant hold such big numbers. In fits fine in float8
Here one of our developers added a float4 column manually instead of 
float8. With float4 its easy to force that error.

regards
Thomas

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