获取上次插入行的唯一ID

Question

我想获取存储过程中最后插入行的唯一ID,我这样做

DELIMITER //
 CREATE PROCEDURE addNewUsers(IN userName varchar(128),IN password varchar(128), IN addedBy INT)

BEGIN

 DECLARE id int default 0;

  id = mysqli_insert_id (insert into  `system_users`( `username`,`password`) values (userName ,md5(password)) );
  IF id <> 0 THEN     
        insert into  `user_profile`( `full_name`,`Date_time_ added`,`added_by`) values (userName ,CURRENT_TIMESTAMP(),addedBy ) where `user_id`=id ;
  END IF


END //

DELIMITER ;

发生此错误

  #1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '= mysqli_insert_id (insert into `system_users`( `username`,`password`) values (' at line 7

我怀疑它是mysqli_insert_id 什么,我该怎么办？

Answer 1

你mysqli_insert_id的问题是,你正在编写一个MySQL存储过程,而不是PHP.你想使用这个last_insert_id()功能:

LAST_INSERT_ID()(不带参数)返回一个BIGINT(64位)值,表示AUTO_INCREMENT由于最近执行的INSERT语句而成功为列添加的第一个自动生成的值.

您还需要修复分配语法.更像这样的东西:

DELIMITER //
CREATE PROCEDURE addNewUsers(IN userName varchar(128),IN password varchar(128), IN addedBy INT)
BEGIN
  DECLARE id int default 0;

  insert into  `system_users`( `username`,`password`) values (userName ,md5(password));
  set id = last_insert_id();
  if id <> 0 then
    -- ...