Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

MysqlÊý¾Ý¿â±íÃû¿Õ¸ñ´¦Àí

½ñÌìʹÓÃPowerDesigner´î½¨ÁËÒ»¸öСÏîÄ¿£¬×îºóÖ´ÐÐÍêSQL½Å±¾Ê±²Å·¢ÏÖÓÐ2ÕűíµÄ±íÃûÖмä¶àÁËÒ»¸ö¿Õ¸ñ£¬²éÍê×ÊÁÏ£¬×îºó²¢¾ªÆæ·¢ÏÖÓ³ÉäÎļþ¾¹È»¶àÁË2¸ö`,¾ÍÊÇshift+Êý×Ö¼ü1µÄÄǸö£¬Ò²¾ÍÊÇËûÔڽű¾ÊÇÕâÑùдµÄ£º
create table `table1`(....);
ÎÊÌâ½â¾ö¡£
PS:´ÓÍøÉÏÕÒµ½µÄ×ÊÁÏ£º
×÷Ϊһ¸öOracle DBA£¬MySQLºÜ¶àSQLÓï·¨ÓëOracleµÄ»¹ÊÇÓкܶà²îÒìµÄ¡£
ÕâÀïÎÒ½«ÒªÔÚMySQLÀィһ¸ö±í£¬±íÃûΪ”Test Table”, ÆäÖÐÒ»¸öÁÐÃûΪ”First Name”£¬µ±ÎÒÓÃÏÂÁÐSQLÓï¾äÀ´´´½¨´Ë±íʱ£¬MySQL·µ»ØÏÂÁдíÎó£º
mysql> create table “Test Table2″ (id int, “First Name” varchar(200));
ERROR
1064 (42000): 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 ‘”Test Table2″ (id int, “First Name” varchar(200))’ at line 1
Õâ¸öMySQLÊý¾Ý¿âÊǰ´ÕÕĬÈÏÅäÖð²×°µÄ¡£
ÄÇô¸ÄÈçºÎ½â¾öÕâ¸öÎÊÌâÄØ£¿
·½·¨1£º
ʹÓà ` (¼´Êý×Ö¼ü1×ó±ßÄǸö¼ü)·ûÀ´´úÌæÉÏÃæµÄË«ÒýºÅ£¬¾ÍÏñÏÂÃæ
create table `Test Table2` (id int, `First Name` varchar(200));
·½·¨2£º
ÐÞ¸ÄMySQLµÄÅäÖÃÎļþmy.cnfÎļþ£¬ÔÚ[mysqld]´ËÏîÖÐÌí¼ÓÏÂÃæ²ÎÊý£¬È»ºóÖØÆôMySQLʹ֮ÉúЧ
sql_mode = ANSI_QUOTES
·½·¨3£º
ÔÚÆô¶¯MySQLʱÌí¼ÓÒ»¸öÆô¶¯Ñ¡Ïî
mysqld_safe –user=mysql –sql-mode=ANSI_QUOTES &


Ïà¹ØÎĵµ£º

»ùÓÚMySQLºÍInfobrightµÄÊý¾Ý²Ö¿â¼¼Êõ

»ùÓÚMySQLºÍInfobrightµÄÊý¾Ý²Ö¿â¼¼Êõ
Êý¾Ý²Ö¿â/·ÖÎö/ÉÌÎñÖÇÄÜ( BI )ÁìÓòÕýÔÚ·ÉËÙ·¢Õ¹¡£ÔÚ¼¤Áҵľ­¼Ã¾ºÕùÖÐËùÓÐÐÐÒµºÍÖÇÄÜÆóÒµÐèÒªÀûÓÃÆäÄÚ²¿µÄÊý¾ÝÀ´×ö³öÖØÒªµÄÉÌÒµ¾ö²ß£¬°üÀ¨Õ½ÊõºÍÕ½ÂÔÁ½·½Ã棬ÒÔ±£³ÖÐÐÒµµÄÁìÏȵØÎ»¡£
Êý¾Ý²Ö¿â(Èç¶ÔMySQLµÄÒ»´ÎÖØ´óÉç»áºÍ¿Í»§µ÷²é)ĿǰÊÇMySQLµÄµÚÎåÖÖ×î³£¼ûµÄÓ¦Óá£ÏÖÔÚÓÃÓÚMySQLÊý¾Ý ......

mysql ʱ¼ä¶Î²éѯ

24СʱÄڼǼ£¨¼´86400Ã룩
$sql="SELECT video_id,count(id)as n from `rec_down` WHERE UNIX_TIMESTAMP(NOW())-UNIX_TIMESTAMP(add_time)<=86400 group by video_id order by n desc ";
$sql="select a.id,a.title,b.n from video_info a,(".$sql.")b where a.id=b.video_id order by n desc limit 20";
NÌìÄڼǼ ......

mysql ʹÓÃrandËæ»ú²éѯ¼Ç¼ЧÂʲâÊÔ

Ò»Ö±ÒÔΪmysqlËæ»ú²éѯ¼¸ÌõÊý¾Ý£¬¾ÍÓÃ
SELECT
 
*
 
from
 `
table

ORDER
 
BY
 
RAND
() LIMIT 
5
¾Í¿ÉÒÔÁË¡£
µ«ÊÇÕæÕý²âÊÔһϲŷ¢ÏÖÕâÑùЧÂʷdz£µÍ¡£Ò»¸ö15ÍòÓàÌõµÄ¿â£¬²éѯ5ÌõÊý¾Ý£¬¾ÓȻҪ8ÃëÒÔÉÏ
²é¿´¹Ù·½ÊֲᣬҲ˵rand()·ÅÔÚORDER BY ×Ó¾äÖлᱻִÐж ......

¸øÄãµÄMySqlÊÜÔ¶³Ì·ÃÎÊȨÏÞ

¸ømysql¿ªÒ»¸ö¿ÉÒÔÔ¶³Ì·ÃÎʵÄÓû§ÃüÁîÈçÏÂ:
GRANT ALL PRIVILEGES ON *.* TO 'myuser'@'%' IDENTIFIED BY 'mypassword' WITH GRANT OPTION;
"*.*" ±íʾÊý¾Ý¿âÖÐËùÓеıí,Ò²¿ÉÒÔ»»³ÉÖ¸¶¨µÄ±íÈçtest.*
"myuser" ±íʾµÄÊÇ·ÃÎʵÄÓû§Ãû;
"%" ±íʾËùÓеÄÖ÷»ú¼´ÈκεÄÖ÷»ú¶¼¿ÉÒÔͨ¹ýÕâ¸öÓû§Ãû·ÃÎÊÎÒµÄÊý¾Ý¿â,Ò²¿ÉÒԸóÉÌØ¶¨µ ......

Mysql´íÎ󼯽õ£¨Linux£©


 
1£º Can’t connect to [local] MySQL server´íÎó
Ò»¸öMySQL¿Í»§¿ÉÒÔÁ½ÖÖ²»Í¬µÄ·½Ê½Á¬½Ómysqld·þÎñÆ÷£ºUnixÌ×½Ó×Ö£¬Ëüͨ¹ýÔÚÎļþϵͳÖеÄÒ»¸öÎļþ(ȱʡ“/tmp /mysqld.sock”)½øÐÐÁ¬½Ó£»»òTCP/IP£¬Ëüͨ¹ýÒ»¸ö¶Ë¿ÚºÅÁ¬½Ó¡£UnixÌ×½Ó×Ö±ÈTCP/IP¸ü¿ì£¬µ«ÊÇÖ»ÓÐÓÃÔÚÁ¬½Óͬһ̨¼ÆËã»úÉϵķþÎñÆ÷¡£Èç¹ûÄ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ