批量删除：

DELETE FROM MyTable WHERE ID IN (1,2);

批量插入：

INSERT INTO MyTable(ID,NAME) VALUES(1,’123′);
INSERT INTO MyTable(ID,NAME) VALUES(2,’456′);
INSERT INTO MyTable(ID,NAME) VALUES(3,’789′);

第二种方法，使用UNION ALL来进行插入操作：   
INSERT INTO MyTable(ID,NAME)
SELECT 4,’000′
UNION ALL
SELECT 5,’001′
UNION ALL
SELECT 6,’002′ ;
据说要比第一种要快！

第三种方法 
INSERT INTO MyTable(ID,NAME) VALUES(7,’003′),(8,’004′),(9,’005′);

Example：

表： leafjob(
leafnum INT NOT NULL PRIMARY KEY,
machine VARCHAR(15) );

删除：delete from leafjob where leafnum in (1,2,4);

插入：

INSERT INTO leafjob (leafnum, machine) values(1, ‘r1leaf3’), (2, ‘r1leaf22’);

insert into leafjob(leafnum, machine) select 4,’000′ union all select 1,’r1leaf3′ union all select 2,’r1leaf22′;

insert into leafjob(leafnum, machine) select 1,’r1leaf3′ union select 2,’r1leaf22′;

注：性能问题需要具体测试。示例在MySql下测试过，version: 4.1.20