TYPO3 Core

Usage of $query->statement() seems to be broken recently:

        $query = parent::createQuery();
        $query->statement('SELECT SUM(t.value) AS cash FROM transaction AS t WHERE NOT t.internal AND NOT t.deleted');
        $result = $query->execute(true);
        return (float) $result[0]['cash'];

Does no more return result but PHP Warning:

PHP Warning: mysqli::query(): Empty query in [...]/typo3/sysext/core/Classes/Database/DatabaseConnection.php line 467

Tracking this down leads to Typo3DbBackend, lines 404 - 415 where the var $sqlString does not get initialized in case of empty parameters. Setting some arbitrary parameters overrides the PHP Warning and fixes output.

            /**
             * @deprecated since 6.2, this block will be removed in two versions
             * the deprecation log is in Qom\Statement
             */
            if (!empty($parameters)) {
                $sqlString = $statement->getStatement();
                $this->replacePlaceholders($sqlString, $parameters);
            }

            $result = $this->databaseHandle->sql_query($sqlString);
            $this->checkSqlErrors();