MySql:插入一行并获取内容 [英] MySql: Insert a row and get the content

问题描述

是否可以插入一行并获取插入到同一查询中的值?

Is it possible to insert a row and get the values inserted in the same query?

类似...

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'

但是仅使用一个查询.

推荐答案

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:

you can call a stored procedure which will perform the insert and return a resultset in a single call from your app layer to 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')", ...);

简单示例:

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');

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