mysql 預存程序 incorrect number of arguments

mysql教程 預存程序 incorrect number of arguments

DROP PROCEDURE `chaxun_name_ps教程`//
CREATE DEFINER=`root`@`localhost` PROCEDURE `chaxun_name_ps`(in c_id

int,out c_phone char,out c_pwd char)
    READS SQL DATA
begin
select phone,pwd
from caopanshou
where id = 18;
select found_rows() into c_phone,c_pwd;
end

調用方法

call chaxun_name_ps(1,1,1)

不知道 方法

select @chaxun_name_ps()

傳回值為Null

有些朋友可能不知道found_rows()函數的功能

select count (*) from t 相同功能的mysql函數found_rows

<?php教程

    $sql = "select count(*) from t";

    $res = mysql_query($sql);

    $num = mysql_result($res,0);

    $sql =  "select topic,detail from t limit 5";

    //***以下我就不寫了

?>

然而用mysql內建函數found_rows();