How to Query

[jrmurdoch]

I have a log that results in the following message

"0.2011 Profit: $3.22"

the message is created via:

$"{size:N4} Profit: {profit:C}"

How can I query all the log entries where 'profit' >= 5, or size > 10, for example?

I've tried profit >= 0 with no luck

[nblumhardt]

Hi! Thanks for getting in touch.

The problem here is that your message uses string interpolation (is prefixed by $), while to do structured logging you need to use message templates.

E.g. the log line should be:

log.Information("{size:N4} Profit: {profit:C}", size, profit);

Let me know if this helps.

Best regards,
Nick

[jrmurdoch]

Yes, that works, thanks.

[nblumhardt]

Great 👍 - thanks for the follow-up.