Gavin King ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *commented* on HHH-16650 ( https://hibernate.atlassian.net/browse/HHH-16650?atlOrigin=eyJpIjoiOTg3Yz... ) Re: Loss in precision due usage of Float data type instead of BigDecimal in case Oracle JDBC driver returning -127 for scale and 0 for precision if precision/scale is unknown. Might happen unexpectedly and requires very close inspection of used SQL ( https://hibernate.atlassian.net/browse/HHH-16650?atlOrigin=eyJpIjoiOTg3Yz... ) Well, this is one of my pet topics: * global GDP is 10^14^ dollars but I’m pretty sure we can’t estimate it to the nearest dollar, nor even to the nearest million dollars (nor even to the nearest billion) * the most precise clock on earth has an accuracy of something like 1 part in 10^18^ but more typical atomic clocks are more like 1 part in 10^12^ * the unix epoch in microseconds has 16 digits * the most accurately-measured quantity in physics is known to about 12 or 13 decimal places … other quantities in the natural sciences are known to far less precision * LIGO can measure some crazily tiny displacements but that doesn’t mean it measures them with a huge amount of precision (TBF, I’m not sure how precise the measurements are) Anyway, the point is that when someone who works in software tells me they need a 38 decimal digits to represent their numbers, I’m a bit skeptical 🙂 Yes, OK, fine, so UUIDs have more “digits” than that, but they’re not numbers, they’re strings, and they’re by nature very wasteful. ( https://hibernate.atlassian.net/browse/HHH-16650#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-16650#add-comment?atlOrigin=ey... ) Get Jira notifications on your phone! Download the Jira Cloud app for Android ( https://play.google.com/store/apps/details?id=com.atlassian.android.jira.... ) or iOS ( https://itunes.apple.com/app/apple-store/id1006972087?pt=696495&ct=Em... ) This message was sent by Atlassian Jira (v1001.0.0-SNAPSHOT#100225- sha1:bbd69a1 )