方法1：
insert into `ttt` select ‘001‘,‘语文‘ union all select ‘002‘,‘数学‘ union all select ‘003‘,‘英语‘;
方法2：
INSERT INTO tab_comp VALUES(item1, price1, qty1),
(item2, price2, qty2),
(item3, price3, qty3);
方法3：
INSERT INTO tab_comp(item1, price1, qty1) SELECT item1, price1, qty1 FROM tab_cc;
