MYSQL存储过程实现in传入参数 where in('1','2')

android 服务器端开发中遇到这么一个问题:

突然发现将字符串传入到存储过程,参数为 '1','2'  ,竟然执行无效

所以看到网上有在存储过程中直接拼凑sql的代码,今天也试了一下,可以执行了,代码如下:

CREATE DEFINER = 'abc'@'%'

PROCEDURE ConfirmAcceptorListProc(in p_task_id varchar(20),in p_user_ids text,out p_msgtype varchar(20),out p_msg varchar(20))

begin

  DECLARE m_user_ids varchar(1000);

DECLARE t_error INTEGER DEFAULT 0;

DECLARE CONTINUE HANDLER FOR SQLEXCEPTION SET t_error=1;

  SET @SEL='update go_task_acceptor set status =\'2\' where status = \'1\' AND task_id = \'';

  set @sentence = concat(@sel,p_task_id,'\' AND acceptor_id in (',p_user_ids,');'); -- 连接字符串生成要执行的SQL语句

  prepare stmt from @sentence; -- 预编释一下。 “stmt”预编释变量的名称,



  START TRANSACTION;

  execute stmt; -- 执行SQL语句

  select row_count() into p_msg;

  if t_error = 1 then

      ROLLBACK;

      set p_msgtype = '-1';

  else

      COMMIT;

      set p_msgtype = '1';

  end if;

deallocate prepare stmt; -- 释放资源



end

以上存储过程里面拼凑出来的sql代码是:

update go_task_acceptor set status ='2' where task_id = p_task_id and status = '1' and  acceptor_id in ('s','4');


 

 

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