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

MySQL¼¯Èº

1£¬½«6.0°æ±¾µÄmysql¼¯ÈºÈí¼þÉÏ´«µ½Linux»òÊÇSolarisÉÏ£¬½âѹ
 
 1>£¬ÎªÁË·½±ãµ÷Óý«Æä¸ÄÃûΪmysql£¬²¢ÇÒ·ÅÓÚ/usr/local/ÏÂ
 2>£¬´´½¨Á¬½ÓÎļþ£¬½øÈë/usr/local/ÏÂ
  
  ln -s ..../mysql mysql
2£¬´´½¨×飬Ìí¼ÓÓû§
 
 groupadd mysql
 useradd -g mysql mysql
3£¬È¨ÏÞµÄÐÞ¸Ä
 
 cd /usr/local/mysql
 
 chown -Rhf mysql .
 chgrp -Rhf mysql .
 
 Ö´Ðнű¾£¬´´½¨Êý¾Ý¿â
 
 scritps/mysql_install_db --user=mysql &
 chown -Rhf root .
 chown -Rhf mysql .
 chown -R mysql data
 chgrp -R mysql .
 
 cp support-file/mysql.server /etc/rc.d/ini.d/mysqld
 chmod +x /etc/rc.d/init.d/mysqld
 <chkconfig - add mysqld>
 ÑéÖ¤Æô¶¯Êý¾Ý¿â
 Æô¶¯Ê§°Ü¿ÉÒÔ³¢ÊÔ£º
  /etc/rc.d/init.d/mysqld stop/start
  service mysqld restart
 Èç¹û»¹ÊÇʧ°Ü
 ln -s /var/lib/mysql/mysql.sock /tmp/mysql.sock
 
  
 bin/mysqld_safe --user=mysql &
 
 ÑéÖ¤³É¹¦ºó£¬Í£Ö¹mysql£¬Í£Ö¹½ø³Ì
 ps -ef | grep mysql<ndb>
 kill -9 ½ø³Ì±êºÅ
4£¬´´½¨ÅäÖÃÎļþ
 vi my.cnf
 
[mysqld]
default-storage-engine=ndbcluster
ndbcluster
ndb-connectstring=10.85.0.90,10.85.0.80
[ndbd]
connect-string=10.85.0.90,10.85.0.80
[ndb_mgm]
connect-string=10.85.0.90,10.85.0.80
[ndb_mgmd]
config-file=/usr/local/mysql/config.ini
[mysql_cluster]
ndb-connectstring=10.85.0.90,10.85.0.80
5£¬´´½¨Æô¶¯Îļþ
 vi config.ini
[ndbd default]
NoOfReplicas= 2
MaxNoOfConcurrentOperations= 10000
DataMemory= 80M
IndexMemory= 24M
TimeBetweenWatchDogCheck= 30000
DataDir= /var/lib/mysql-cluster
MaxNoOfOrderedIndexes= 512
StartPartialTimeout=100
StartPartitionedTimeout=100
ArbitrationTimeout=5000
TransactionDeadlockDetectionTimeout=5000
HeartbeatIntervalDbDb=5000
StopOnError=0
[ndb_mgmd default]
DataDir= /var/lib/mysql-cluster
[ndb_mgmd]
Id=1
HostName= 10.85.0.90
[ndb_mgmd]
Id=2
Ho


Ïà¹ØÎĵµ£º

MySQL ÊÂÎñ ´æ´¢¹ý³Ì ʵÀý

USE dxdb;
DELIMITER //
#»ñÈ¡Á÷Ë®ºÅ
DROP PROCEDURE IF EXISTS get_sid;
CREATE PROCEDURE get_sid(para_domain VARCHAR(20), out para_sid BIGINT UNSIGNED)
BEGIN
START TRANSACTION;
UPDATE t_sid SET sID=sID+1 WHERE cDomain=para_domain;
SELECT sID INTO para_sid from t_sid WHERE cDomain=para_domain;
......

mysqlÖд¥·¢Æ÷µÄÓ¦ÓÃ

Õ⼸ÌìѧϰÁË´¥·¢Æ÷µÄÓ÷¨£¬¾õµÃ´¥·¢Æ÷ºÜºÃÓð¡¡£
´¥·¢Æ÷µÄ»ù±¾Óï·¨£º
CREATE TRIGGER <´¥·¢Æ÷Ãû><--
{BEFORE | AFTER}
{ INSERT | UPDATE | DELETE }
ON <±íÃû³Æ>
FOR EACH ROW
<´¥·¢Æ÷SQLÓï¾ä>
¹æÔò£º
1.´¥·¢Æ÷±ØÐëÓÐÃû×Ö£¬×î¶à64¸ö×Ö·û£¬¿ÉÄܺóÃæ»á¸½Óзָô·û.ËüºÍMySQLÖÐÆäËû¶ÔÏóµÄÃüÃû· ......

mysqlÊý¾ÝUnixʱ¼ä´ÁÓëC# DateTimeʱ¼äÀàÐÍ»¥»»

Unixʱ¼ä´Á×îСµ¥Î»ÊÇÃ룬¿ªÊ¼Ê±¼äΪ¸ñÁÖÍþÖαê׼ʱ¼ä1970-01-01 00:00:00
ConvertIntDateTime·½·¨µÄ»ù±¾Ë¼Â·ÊÇͨ¹ý»ñÈ¡±¾µØÊ±Çø±íʾUnixk¿ªÊ¼Ê±¼ä£¬¼ÓÉÏUnixʱ¼äÖµ£¨¼´¹ýÈ¥µÄÃëÊý£©.
ConvertDateTimeInt·½·¨µÄ»ù±¾Ë¼Â·ÊÇͨ¹ý¿Ì¶ÈÊý²î£¬Ôٰѿ̶ÈÊýת»»ÎªÃëÊý£¬µ±È»ÒªËµÃ÷µÄÊÇ£¬ÎÒÕâÀï·µ»ØµÄÊÇdoubleÀàÐÍ£¬ÒâÒåÉϲ¢·ÇÊÇÕæ ......

¸ßÐÔÄÜMYSQL¶ÁÊé±Ê¼Ç£ºMYSQL×¼±¸Óï¾ä

MYSQL4.1¼°¸ü¸ß°æ±¾Ö§³Ö·þÎñÆ÷¶Ë×¼±¸Óï¾ä(Prepared Statements), ËüʹÓÃÔöÇ¿µÄ¶þ½øÖƿͻ§¶Ë/·þÎñÆ÷ЭÒéÔÚ¿Í»§¶ËºÍ·þÎñÆ÷Ö®¼ä¸ßЧµÄ·¢ËÍÊý¾Ý£¬¿ÉÒÔͨ¹ýÖ§³ÖÕâÖÖÐÐЭÒéµÄ±à³Ì¿âÀ´·ÃÎÊ×¼±¸Óï¾ä£¬ÁÐÈëMYSQL CAPI,MYSQL Connector/JºÍMYSQL Connector/NET ΪJAVAºÍ.NETÌṩÁËͬÑùµÄ·ÃÎʽӿڡ£ËüÒ²ÓÐSQLÓïÑԵķÃÎʽӿڡ£
´´½¨×¼ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ