[Bignumber]display a specific date in the dataset as bigumber

[junlincc]

As a user, I would like to extract a certain date from my temporal columns and display is as bignumber. e.g. latest date available using MAX

Currently there's workaround by using wordcloud

1. with a timstamp field, created a calculated column converting it to a string
2. create a wordcloud chart, series will be the calculated column, and metric (if you want most recent date) would be be max(original timestamp column)
3. set row limit to 1 and sort by metric
4. For visual purposes make the font size big and format as flat so that there is less variability into where the single date is appearing. b/c a word cloud randomly places the words.

However.... I'm not sure this workaround may not be always valid.

The minmuml we can do is to have bignumber to support MAX/MIN on time converted string like wordcloud does

[junlincc]

reopening this issue as we are still experiencing the bug. @zhaoyongjie