Обсуждение: question about sql comments in postgresql server logs
Hello all, In order to track down some bugs, we thought it would be useful to append some comments to the sql being sent to postgresql like this: select foo from bar -- a comment with some metadata however, the postgresql server was not including the appended comment in the log file. If we instead sent select foo from /* a comment with some metadata */ bar then the comment was included in the server log file as we had hoped. Is there some way can get the statement as sent to the server emitted into the log file in a case like this? I looked through the server documentation and don't see an option that would clearly alter this behavior. Thank you, Alan
On 06/08/2021 20:08, Alan Stange wrote: > Hello all, > > In order to track down some bugs, we thought it would be useful to > append some comments to the sql being sent to postgresql like this: > select foo from bar -- a comment with some metadata > however, the postgresql server was not including the appended comment in > the log file. > > If we instead sent > select foo from /* a comment with some metadata */ bar > then the comment was included in the server log file as we had hoped. > > Is there some way can get the statement as sent to the server emitted > into the log file in a case like this? I looked through the server > documentation and don't see an option that would clearly alter this > behavior. > > Thank you, > > Alan Raise info? Tim Clarke MBCS IT Director Direct: +44 (0)1376 504510 | Mobile: +44 (0)7887 563420 Telephone: Witham: +44(0)1376 503500 | London: +44 (0)20 3009 0853 | Frankfurt: +49 (0)69 7191 6000 | Hong Kong: +852 58031687 | Toronto: +1 647 503 2848 Web: https://www.manifest.co.uk/ Minerva Analytics Ltd - A Solactive Company 9 Freebournes Court | Newland Street | Witham | Essex | CM8 2BL | United Kingdom ________________________________ Copyright: This e-mail may contain confidential or legally privileged information. If you are not the named addressee youmust not use or disclose such information, instead please report it to admin@minerva.info<mailto:admin@minerva.info> Legal: Minerva Analytics is the trading name of: Minerva Analytics Ltd: Registered in England Number 11260966 & The ManifestVoting Agency Ltd: Registered in England Number 2920820 Registered Office at above address. Please Click Here https://www.manifest.co.uk/legal/for further information.
Alan Stange <stange@rentec.com> writes:
> In order to track down some bugs, we thought it would be useful to
> append some comments to the sql being sent to postgresql like this:
> select foo from bar -- a comment with some metadata
> however, the postgresql server was not including the appended comment in
> the log file.
> If we instead sent
> select foo from /* a comment with some metadata */ bar
> then the comment was included in the server log file as we had hoped.
If memory serves, this is a psql behavior not the server's.
I counsel using /* ... */ comments for the purpose.
regards, tom lane
On 8/6/21 3:14 PM, Tom Lane wrote: > Alan Stange <stange@rentec.com> writes: >> In order to track down some bugs, we thought it would be useful to >> append some comments to the sql being sent to postgresql like this: >> select foo from bar -- a comment with some metadata >> however, the postgresql server was not including the appended comment in >> the log file. >> If we instead sent >> select foo from /* a comment with some metadata */ bar >> then the comment was included in the server log file as we had hoped. > If memory serves, this is a psql behavior not the server's. > I counsel using /* ... */ comments for the purpose. Thank you Tom, I tried both psql and connecting through jdbc and both had the same behavior, so assumed this was something in the server. We will go with /* */ to resolve the immediate problem, and will ask on the jdbc mailing list about this. Being able to freely append some comments for debugging/tracking purposes in the server logs seems like a useful feature. Thank you, Alan