exception 'mysqli_sql_exception' with message 'You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'AND productos_categoria_id =   AND ( (productos_agrupacion_codigo = "") OR (prod' at line 1' in /home/plazerez/public_html/productos.php:369
Stack trace:
#0 /home/plazerez/public_html/productos.php(369): mysqli_query(Object(mysqli), 'SELECT * FROM p...')
#1 {main}