error while logging in KX API code:

Community Support
,
1

https://learninghub.kx.com/forums/topic/error-while-logging-in-kx-api-code

var1:first exec sum smb from select smb1;

.log.LOG.info(“log SampleMean %s”;string var1);

when trying to log with code :.log.LOG.info(“log SampleMean %s”;string var1); HDB and some process is not coming post restart. seems like conversion error. please advise

2

Can you explain more clearly what you're trying to do and the error you are receiving? 

3

Hi iodwyer- Thanks for your reply, I'm trying the below code, if var1 is having a number or decimal value, how can we print in in logfile say as its HDB process I would like to print the value of var1 in HDB logs. I tried below Loging code but unfortunately it didn't work. there are no specific error.

var1:first exec sum smb from select smb1;

.log.LOG.info(“log SampleMean %s”;string var1);

4

See example below, hopefully this helps.


ubuntu@ian-dev:~$ q
KDB+ 4.1 2025.04.28 Copyright (C) 1993-2025 Kx Systems
l64/ 4()core 15990MB ubuntu ian-dev.firstderivatives.com 127.0.1.1 EXPIRE 2025.07.13 iodwyer@kx.com KXAI #84167
q).com_kx_log.init[:fd://stdout:fd:///tmp/app.log; ``]
8c6b8b64-6815-6084-0a3e-178401251b68 5ae7962d-49f2-404d-5aec-f7c8abbae288
q).log.LOG:.com_kx_log.new[`Test; ()]
q).log.LOG.info (“log SampleMean %1”; 10)
{“time”:“2025-06-12T00:03:13.532z”,“component”:“Test”,“level”:“INFO”,“message”:“log SampleMean 10”}
\
ubuntu@ian-dev:~$ cat /tmp/app.log
{“time”:“2025-06-12T00:03:13.532z”,“component”:“Test”,“level”:“INFO”,“message”:“log SampleMean 10”}