MySql：插入一行并获取内容

Question

是否可以插入一行并在同一查询中插入值？

就像是…

INSERT INTO `items` (`item`, `number`, `state`) 
(SELECT '3', `number`, `state` FROM `item_bug` WHERE `id`='3')

然后，获取ID并执行

SELECT * FROM `items` WHERE `id`='$id'

但是只使用一个查询。

Answer 1

您可以调用存储过程，该过程将执行插入操作，并在一次调用中将结果集从应用程序层返回到mysql：

存储过程调用

mysql> call insert_user('bar');
+---------+----------+
| user_id | username |
+---------+----------+
|       1 | bar      |
+---------+----------+
1 row in set (0.02 sec)

$sqlCmd = sprintf("call insert_user('%s')", ...);

简单的例子：

drop table if exists users;
create table users
(
user_id int unsigned not null auto_increment primary key,
username varchar(32) unique not null
)
engine=innodb;


drop procedure if exists insert_user;

delimiter #

create procedure insert_user
(
in p_username varchar(32)
)
begin
declare v_user_id int unsigned default 0;

 insert into users (username) values (p_username);

 set v_user_id = last_insert_id();

 -- do more stuff with v_user_id e.g. logs etc...

 select * from users where user_id = v_user_id;

end#

delimiter ;

call insert_user('bar');