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FrancoisFrancois · 09-28-2025, 05:28 AM

Hello

With Calibre, we can query different fields.
I'm trying to query empty fields.
For example, I want to list all the books whose Author(s) field is empty. I can't find the correct syntax.
Can someone help me?

See you soon.

09-28-2025, 05:28 AM	#1
FrancoisFrancois Junior Member Posts: 4 Karma: 10 Join Date: Aug 2018 Device: Calibre	Query empty fields Hello With Calibre, we can query different fields. I'm trying to query empty fields. For example, I want to list all the books whose Author(s) field is empty. I can't find the correct syntax. Can someone help me? See you soon.