Probably depends on your $wgDBTableOptions settings? Doctrine can generate a schema update command given an actual and a desired schema, but that will probably result in character conversion which is not what you want...
In any case, not really related to this task.

In T191231#8512604, @Sophivorus wrote:

@Reedy wrote:
update.php? ;)
What version are you upgrading from?

Hah no, I wish it were that simple. I already run update.php when I upgraded from 1.35 to 1.39 and the wiki has been working ok for some weeks now. However, tracking down [https://www.mediawiki.org/wiki/Topic:X9zviki367qeczo5 this bug with DiscussionTools], I narrowed it down to a database or data issue, and noticed that many of the tables and fields were latin1_swedish_ci rather than binary (both before and after the upgrade). Should this have been fixed by some update.php? Is there some other recommended way to fix it? Thanks again!

@Reedy wrote:
update.php? ;)
What version are you upgrading from?

In T191231#8510532, @Sophivorus wrote:

Is there a maintenance script, procedure or advice to update an old database schema to the current one?

Is there a maintenance script, procedure or advice to update an old database schema to the current one?

Change 496421 abandoned by Ladsgroup:

[mediawiki/core@master] [POC] USe of Doctrine DBAL for oracle schema and schema changes

Reason:

Abstract schema has been long deployed \o/

https://gerrit.wikimedia.org/r/496421

Change 791654 merged by jenkins-bot:

[mediawiki/core@master] installer,rdbms: Remove hints to Oracle and Microsoft SQL Server

https://gerrit.wikimedia.org/r/791654

Change 791654 had a related patch set uploaded (by Umherirrender; author: Umherirrender):

[mediawiki/core@master] Remove hints to Oracle and Microsoft SQL Server

https://gerrit.wikimedia.org/r/791654

Change 759372 merged by jenkins-bot:

[mediawiki/extensions/ExternalData@master] Correct messages for absent libraries

https://gerrit.wikimedia.org/r/759372

Change 759372 had a related patch set uploaded (by Alex Mashin; author: mashin):

[mediawiki/extensions/ExternalData@master] Correct messages for absent libraries

https://gerrit.wikimedia.org/r/759372

Change 759143 merged by jenkins-bot:

[mediawiki/extensions/ExternalData@master] Handle absence of odbc and pgsql libraries in PHP gracefully

https://gerrit.wikimedia.org/r/759143

Change 759143 had a related patch set uploaded (by Alex Mashin; author: mashin):

[mediawiki/extensions/ExternalData@master] Handle absence of ODBC library in PHP gracefully

https://gerrit.wikimedia.org/r/759143

Change 758035 merged by jenkins-bot:

[mediawiki/extensions/ExternalData@master] Enable {{#get_db_data:}} to connect to MS SQL Server

https://gerrit.wikimedia.org/r/758035

Change 758035 had a related patch set uploaded (by Alex Mashin; author: mashin):

[mediawiki/extensions/ExternalData@master] Enable {{#get_db_data:}} to connect to MS SQL Server

https://gerrit.wikimedia.org/r/758035

@Arskrigicioniec: This ticket is specifically about MSSQL and declined; see the previous comments.

I have the same problem with my MySQL shared hosting on clean 1.34 MediaWiki. I use Russian local. The search results give me only headers, despite of search by key words actually works.

Change 697147 merged by jenkins-bot:

[mediawiki/extensions/ReplaceText@master] Remove MSSQL support

https://gerrit.wikimedia.org/r/697147

Change 697147 had a related patch set uploaded (by Umherirrender; author: Umherirrender):

[mediawiki/extensions/ReplaceText@master] Remove MSSQL support

https://gerrit.wikimedia.org/r/697147