Cant make a mega metadata reference book

Rellwood · 09-17-2022, 11:51 PM

Is there a limit to the number of tags a column can hold?

AM weeding out some 3000 tags (old bookshelves and their many, many, iterations of the same tag) and I am trying to do it in a separate dedicated libary. However, when I try to collect the tags in the dummy book only half of them will fill the column.

I open up bulk edit metadata and click on the tag editor next to the colum and copy over all the tags so that every tag is in the column. I close the editor and save the book. When I copy it to the library there are only half the tags.

Back in the original library, when I check to see if all the tags have copied over in the editor after copying them, closing the editor, then re-opening the editor I see the ones I just copied over back in the left pane. I just downloaded the newest version of calibre 6.5

ownedbycats · 09-18-2022, 12:02 AM

Have you tried the option in Job Spy? I believe it's listed under the metadata options and is called something like "mega-reference book."

@chaley would probably know whether it's a db limitation or not.

Rellwood · 09-18-2022, 12:07 AM

Yeah I did, got the same problem

chaley · 09-21-2022, 04:57 AM

There is no limit that I know of other than memory. I just made a comma-separated list of 5000 numbers 1 - 5000 and pasted it into Tags for a book. It took a little while but worked. I then copied Tags from book details and pasted it into Excel. All 5000 numbers were there.

If calibre runs out of memory then all bets are off. I can't guarantee that it will visibly fail in this case. It should, but ...

09-17-2022, 11:51 PM	#1
Rellwood Library Breeder (She/Her) Posts: 1,305 Karma: 1937893 Join Date: Apr 2015 Location: Fullerton, California Device: Paperwhite 2015 (2), PW 2024 (12 GEN), PW 2023 (11 GEN), Scribe (1st)	Cant make a mega metadata reference book Is there a limit to the number of tags a column can hold? AM weeding out some 3000 tags (old bookshelves and their many, many, iterations of the same tag) and I am trying to do it in a separate dedicated libary. However, when I try to collect the tags in the dummy book only half of them will fill the column. I open up bulk edit metadata and click on the tag editor next to the colum and copy over all the tags so that every tag is in the column. I close the editor and save the book. When I copy it to the library there are only half the tags. Back in the original library, when I check to see if all the tags have copied over in the editor after copying them, closing the editor, then re-opening the editor I see the ones I just copied over back in the left pane. I just downloaded the newest version of calibre 6.5

09-18-2022, 12:02 AM	#2
ownedbycats Custom User Title Posts: 11,386 Karma: 79699999 Join Date: Oct 2018 Location: Canada Device: Kobo Libra H2O, formerly Aura HD	Have you tried the option in Job Spy? I believe it's listed under the metadata options and is called something like "mega-reference book." @chaley would probably know whether it's a db limitation or not. Last edited by ownedbycats; 09-18-2022 at 12:06 AM.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Cross-reference/index/quote/metadata	Evil Overlord	ePub	9	05-16-2020 02:35 AM
Book reference challenge	John F	Reading Recommendations	12	10-06-2016 09:28 AM
OPDS - iPad. Files downloaded to Stanza or Mega Reader do not keep metadata	COLEY54321	Calibre	7	04-18-2012 10:49 AM
I want to merge short mobi book files into a mega mobi file	vugtitan	Conversion	5	12-25-2011 12:04 PM
E-book for Reference	QFT	Which one should I buy?	8	10-17-2008 11:56 PM

09-18-2022, 12:07 AM	#3
Rellwood Library Breeder (She/Her) Posts: 1,305 Karma: 1937893 Join Date: Apr 2015 Location: Fullerton, California Device: Paperwhite 2015 (2), PW 2024 (12 GEN), PW 2023 (11 GEN), Scribe (1st)	Yeah I did, got the same problem

09-21-2022, 04:57 AM	#4
chaley Grand Sorcerer Posts: 12,529 Karma: 8074628 Join Date: Jan 2010 Location: Notts, England Device: Kobo Libra 2	There is no limit that I know of other than memory. I just made a comma-separated list of 5000 numbers 1 - 5000 and pasted it into Tags for a book. It took a little while but worked. I then copied Tags from book details and pasted it into Excel. All 5000 numbers were there. If calibre runs out of memory then all bets are off. I can't guarantee that it will visibly fail in this case. It should, but ...

Advert