} elseif ( !$db->fieldExists( 'revision', 'rev_sha1', __METHOD__ ) ) {
$this->output( "rev_sha1 column does not exist\n\n", true );
} elseif ( !$db->fieldExists( 'revision', 'rev_sha1', __METHOD__ ) ) {
$this->output( "rev_sha1 column does not exist\n\n", true );