Fatal error: Uncaught PDOException: SQLSTATE[42601]: Syntax error: 7 ERROR: syntax error at or near "`" LINE 1: SELECT DISTINCT(category) as category FROM `products` ORDER ... ^ in /var/www/html/shopping/includes/database.php:26 Stack trace: #0 /var/www/html/shopping/includes/database.php(26): PDO->query('SELECT DISTINCT...') #1 /var/www/html/shopping/categories.php(8): database_querySelect('SELECT DISTINCT...', NULL) #2 {main} thrown in /var/www/html/shopping/includes/database.php on line 26