Wikimedia Bugzilla is closed!

See the last functions in the file 'includes/installer/PostgresqlUpdater.php':

protected function addInterwikiType() {
$this->applyPatch( 'patch-add_interwiki.sql', false, "Refreshing add_interwiki()" );
}
protected function tsearchFixes() {
# Tweak the page_title tsearch2 trigger to filter out slashes
# This is create or replace, so harmless to call if not needed
$this->applyPatch( 'patch-ts2pagetitle.sql', false, "Refreshing ts2_page_title()" );
# If the server is 8.3 or higher, rewrite the tsearch2 triggers
# in case they have the old 'default' versions
# Gather version numbers in case we need them
if ( $this->db->getServerVersion() >= 8.3 ) {
$this->applyPatch( 'patch-tsearch2funcs.sql', false, "Rewriting tsearch2 triggers" );
}
}

All these *.sql files are missing. Moreover, addInterwikiType() calls even if interwiki table already exists.

Also patch-interwiki.sql for PostgreSQL should be:

CREATE TABLE /*$wgDBprefix*/interwiki (
-- The interwiki prefix, (e.g. "Meatball", or the language prefix "de")
iw_prefix varchar(32) NOT NULL,
-- The URL of the wiki, with "$1" as a placeholder for an article name.
-- Any spaces in the name will be transformed to underscores before
-- insertion.
iw_url byteea NOT NULL,
-- A boolean value indicating whether the wiki is in this project
-- (used, for example, to detect redirect loops)
iw_local BOOL NOT NULL,
PRIMARY KEY (iw_prefix),
UNIQUE (iw_prefix)
) /*$wgDBTableOptions*/;

But this is could be wrong too - upgrade script suggests that iw_local column translating into smallint type, so it should be already smallint from the start (bool->smallint translation is not allowed, afair).

So these SQL files and updater scripts should be syncronised for consistency.