syntax error: select DISTINCT id,ten,tenkhongdau,thumb,giaban,giakm,spmoi,description from table_product,table_product_relationships where  table_product.id=table_product_relationships.product_id and hienthi=1 and product_item_id IN (7,9,9,10,10,11,11,12,12,13,13,14,14,17,17,18,18,21,21,31,31,52,52,93,93,103,103,104,104,106,106,107,107)  order by id desc