While installing wikibase, it failed with this error:
Creating wb_changes_subscription table ...[24c8a27fa67b3ebc29b340b1] [no req] Wikimedia\Rdbms\DBQueryError from line 1457 of /srv/www/mediawiki-1.31.0/includes/libs/rdbms/database/Database.php: A database query error has occurred. Did you forget to run your application's database schema updater after upgrading? Query: CREATE TABLE IF NOT EXISTS "wb_changes_subscription" ( cs_row_id BIGINT NOT NULL PRIMARY KEY AUTO_INCREMENT, cs_entity_id VARBINARY(255) NOT NULL, -- the ID of the entity subscribed to cs_subscriber_id VARBINARY(255) NOT NULL -- the ID of the subscriber (e.g. a domain name or database name) ) /*$wgDBTableOptions*/ Function: Wikimedia\Rdbms\Database::sourceFile( /srv/www/mediawiki-1.31.0/extensions/Wikibase/repo/includes/Store/Sql/../../../sql/changes_subscription.sql ) Error: 42601 ERROR: syntax error at or near "AUTO_INCREMENT" LINHA 2: cs_row_id BIGINT NOT NULL PRIMARY KEY AUTO_INCREMEN...
It seems that it does not support PostgreSQL. No single doc mentioned that requirement until I was far into the installation.