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capink · 05-09-2021, 02:27 PM

I just tested that in Action Chains, and the "Clear Value" does work only for custom date columns, but not for timestamp column.

Apparently setting the value of timestamp to None has no effect, unlike what happens with other custom date columns.

I've never had a need to clear the timestamp, so never tested this and thought it would work the same. Calibre intentionally (probably for a good reason) makes it hard to null the timestamp column. You cannot do it in library view and even in search and replace it is not present.

Will look into this for next release.

Edit: You cannot null it using a template as well.

05-09-2021, 02:27 PM	#7
capink Wizard Posts: 1,196 Karma: 1995558 Join Date: Aug 2015 Device: Kindle	I just tested that in Action Chains, and the "Clear Value" does work only for custom date columns, but not for timestamp column. Apparently setting the value of timestamp to None has no effect, unlike what happens with other custom date columns. I've never had a need to clear the timestamp, so never tested this and thought it would work the same. Calibre intentionally (probably for a good reason) makes it hard to null the timestamp column. You cannot do it in library view and even in search and replace it is not present. Will look into this for next release. Edit: You cannot null it using a template as well.