エラー　: 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 info_sch_sem.sem_type = mst_categ.title ORDER BY categ_no' at line 1<br />クエリ：SELECT * FROM info_sch_sem, mst_categ WHERE sch_no =  and info_sch_sem.sem_type = mst_categ.title ORDER BY categ_no