Hi @flamber i saw in "Allow custom fields ("custom columns") to work with text and datetime fields #11330" that calculating date difference is already planned in version 0.40.
Am using 0.41 but feature is not available. Is this yet to be released ?
Thanks
Krishna
Hi @Krishna
Please link directly to issues: https://github.com/metabase/metabase/issues/11330
We cannot tackle issues, which are too broad. The issue was closed, as I wrote in the comment.
There's a separate issue open for date difference:
https://github.com/metabase/metabase/issues/16870 - upvote by clicking 
on the first post
In https://github.com/metabase/metabase/issues/16870, its mentioned that we can try by putting the date field manually in Custom formula.
I tried this and it works fine! Could get the number of days between 2 dates. Am using Oracle.
Regards
Krishna
Thank you for that very detailed explanation, we are all very glad YOU managed to do it, and I am sure we will figure it out somehow.