mysql´æ´¢¹ý³Ìtips
ʾÀý£º
create procedure proc_name (in parameter integer)
begin
declare variable varchar(20);
if parameter=1 then
set variable='MySQL';
else
set variable='PHP';
end if;
insert into tb (name) values (variable);
end;
MySQLÀ©Õ¹Ò²ÊÇÖ§³Ö´æ´¢¹ý³ÌµÄ£¬²»¹ýÖ»Ö§³ÖÎÞ·µ»Ø½á¹ûµÄ´æ´¢¹ý³Ì
¿ÉÒÔʹÓÃmysqliÀ´´úÌæ
Ïà¹ØÎĵµ£º
¾¡¿ÉÄܵØÊ¹ÓÃ×îÓÐЧ(×îС)µÄÀàÐÍ¡£MySQLÓкܶà½ÚÊ¡´ÅÅ̿ռäºÍÄÚ´æµÄרҵ»¯ÀàÐÍ¡£
Èç¹û¿ÉÄÜʹ±í¸üС£¬Ê¹ÓýÏСµÄÕûÊýÀàÐÍ¡£ÀýÈ磬MEDIUMINT¾³£±ÈINTºÃһЩ¡£
Èç¹û¿ÉÄÜ£¬ÉùÃ÷ÁÐΪNOT NULL¡£ËüʹÈκÎÊÂÇé¸ü¿ì¶øÇÒÄãΪÿÁнÚʡһλ¡£×¢ÒâÈç¹ûÔÚÄãµÄÓ¦ÓóÌÐòÖÐÄãȷʵÐèÒªNULL£¬ÄãÓ¦¸ÃºÁÎÞÒÉÎÊʹÓÃËü£¬Ö»ÊDZÜÃâȱʡµØÔÚËùÓ ......
Some problems encounted this afternoon, when trying to setup/test mysql capabilities on hypnos and virgil.
1.ERROR 2003 (HY000): Can't connect to MySQL server on 'server-name' (111)
access locally (i.e. from localhost) is fine, when trying remotely got this error. when tried with mysql++ library, ......
×òÌìÒªmysqlÖÐд´æ´¢¹ý³Ì·¢ÏÖÍøÉÏÓйØÓÚcursorÑ»·ÇÒÌ×µÄ×ÊÁϺÜÉÙ,ÏÖ·¢³ö±¾ÈËдµÄÀý×Ó,Ï£ÍûÄܶԴó¼ÒÓаïÖú.
¿´ÕÐ:
DELIMITER $$
USE `ad_db`$$
DROP PROCEDURE IF EXISTS `test`$$
CREATE DEFINER=`root`@`%` PROCEDURE `test`()
BEGIN
/** CPAЧ¹ûÊý */
DECLARE _tmpId1 INT;
DECLARE ......
ÓÃmysql_query£¬mysql_fetch_array()ºóÓ¦¸ÃÒª
free_result().function count_admin($where = '')
{
if($where) $where = " WHERE $where";
$result = $this->db->get_one("SELECT count(*) as num from $this->table_admin_role $where");
return $result['num'];
} ......