mysql - 获取最后插入行的唯一 ID

Question

我想在存储过程中获取最后插入行的唯一 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 ;

出现这个错误

  #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

我怀疑它来自 mysqli_insert_id ，我该怎么办？

Answer 1

你的 mysqli_insert_id是问题所在，您正在编写 MySQL 存储过程，而不是 PHP。你想使用 last_insert_id()功能:

LAST_INSERT_ID() (with no argument) returns a BIGINT (64-bit) value representing the first automatically generated value successfully inserted for an AUTO_INCREMENT column as a result of the most recently executed INSERT statement.

您还需要修复赋值语法。更像这样:

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
    -- ...