mysql插入多条数据时间复杂度比较

• SQL脚本

select * from users;

• 方式一：

insert into users(name, age, course_id) VALUES("test",1, "0");
insert into users(name, age, course_id) VALUES("test",1, "0");
insert into users(name, age, course_id) VALUES("test",1, "0");
insert into users(name, age, course_id) VALUES("test",1, "0");
insert into users(name, age, course_id) VALUES("test",1, "0");
insert into users(name, age, course_id) VALUES("test",1, "0");
insert into users(name, age, course_id) VALUES("test",1, "0");
insert into users(name, age, course_id) VALUES("test",1, "0");
insert into users(name, age, course_id) VALUES("test",1, "0");
insert into users(name, age, course_id) VALUES("test",1, "0");
insert into users(name, age, course_id) VALUES("test",1, "0");
insert into users(name, age, course_id) VALUES("test",1, "0");
insert into users(name, age, course_id) VALUES("test",1, "0");
insert into users(name, age, course_id) VALUES("test",1, "0");
insert into users(name, age, course_id) VALUES("test",1, "0");
insert into users(name, age, course_id) VALUES("test",1, "0");
insert into users(name, age, course_id) VALUES("test",1, "0");
insert into users(name, age, course_id) VALUES("test",1, "0");
insert into users(name, age, course_id) VALUES("test",1, "0");
insert into users(name, age, course_id) VALUES("test",1, "0");
insert into users(name, age, course_id) VALUES("test",1, "0");
insert into users(name, age, course_id) VALUES("test",1, "0");
insert into users(name, age, course_id) VALUES("test",1, "0");
insert into users(name, age, course_id) VALUES("test",1, "0");

• 方式二：

insert into users(name, age, course_id) VALUES("test",1, "0"),("test",1, "0"),("test",1, "0"),("test",1, "0"),

("test",1, "0"),("test",1, "0"),("test",1, "0"),("test",1, "0"),
("test",1, "0"),("test",1, "0"),("test",1, "0"),("test",1, "0"),
("test",1, "0"),("test",1, "0"),("test",1, "0"),("test",1, "0"),
("test",1, "0"),("test",1, "0"),("test",1, "0"),("test",1, "0"),
("test",1, "0"),("test",1, "0"),("test",1, "0"),("test",1, "0")

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• 时间损耗

在插入上面24条数据的时候发现两者的执行效率相差比较大（近10倍的）

　　方式一：

　　方式二：

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•  扩展：

那么jdbc中的批处理的内部实现是不是采用方式二的形式来实现呢？感兴趣的朋友可以查看下该部分的源码...