The data in these fields are separate:
* `IndexableText`
* `Title`
* `IndexableAuthors`
* `IndexableCollections`
There are also on indices on each of these fields so that they can have
separate weight in the relevance scoring.
Here's what's in `IndexableText` right now:
1. Title
2. Collections
3. Authors
4. Tags
5. LocSubjects
6. TocEntries
Here is the proposed new ranking:
```
10 * Title +
8 * Authors +
3 * Collections +
IndexableText
```
New indices for existing DBs:
```
ALTER TABLE `Ebooks` ADD COLUMN `IndexableAuthors` text NOT NULL;
ALTER TABLE `Ebooks` ADD COLUMN `IndexableCollections` text NULL;
ALTER TABLE `Ebooks` ADD FULLTEXT `indexSearchTitle` (`Title`);
ALTER TABLE `Ebooks` ADD FULLTEXT `idxSearchAuthors` (`IndexableAuthors`);
ALTER TABLE `Ebooks` ADD FULLTEXT `idxSearchCollections` (`IndexableCollections`);
```
Newer versions of MariaDB, such as this one included with Ubuntu 24.04:
Server version: 10.11.8-MariaDB-0ubuntu0.24.04.1 Ubuntu 24.04
change the default behavior to not automatically set timestamp defaults and on update values:
$ mysqld --verbose --help | grep explicit-defaults-for-timestamp
explicit-defaults-for-timestamp TRUE
whereas my older machines allowed it:
$ mysqld --verbose --help | grep explicit-defaults-for-timestamp
explicit-defaults-for-timestamp FALSE
More background on the flag here:
https://dev.mysql.com/doc/refman/8.4/en/timestamp-initialization.html
