SQL批量删除与批量插入语句

第一种方法：

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';