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
×÷Õß Ð¡ºÉ||¡¾×ªÔØÊ±ÇëÎñ±ØÒÔ³¬Á´½ÓÐÎʽ±êÃ÷ÎÄÕÂÔʼ³ö´¦ºÍ×÷ÕßÐÅÏ¢¡¿
· ÓÀ¾ÃÁ´½Ó: http://www.oracleblog.cn/useful-script/prompt-of-sqlplus/
misc@ORALOCAL(192.168.0.49)>
Èç¹ûÄãÒ²ÏëºÍÎÒÒ»Ñù£¬ÔÚsqlplusµÇ¼Êý¾Ý¿âµÄʱºò£¬ÄÜÌáʾ²»ÉÙÏñÉÏÃæÕâÑùÏêϸµÇ¼µÄÐÅÏ¢£º
1.µÇ¼µÄÓû§Ãû¡£µ±ÄãµÄÊý¾Ý¿âÖÐÓжà¸ö ......
¸ñʽ£ºgrant [PRIVILEGES] on [databaseName.tableName] to [userName]@[host] identified by [password] with grant option;
eg1: grant select on mysql.user to wqh@localhost
eg2:GRANT SELECT,INSERT,UPDATE,DELETE,CREATE ......
mysqlÖÐINSTRº¯ÊýµÄÓ÷¨
INSTR(×Ö¶ÎÃû, ×Ö·û´®)
Õâ¸öº¯Êý·µ»Ø×Ö·û´®ÔÚijһ¸ö×ֶεÄÄÚÈÝÖеÄλÖÃ, ûÓÐÕÒµ½×Ö·û´®·µ»Ø0£¬·ñÔò·µ»ØÎ»Ö㨴Ó1¿ªÊ¼£©
SELECT * from tblTopic ORDER BY INSTR( topicTitle, 'ha' ) > 0 DESC
SELECT INSTR( topicTitle, 'ha' ) from tblTopic
mysqlÖÐʹÓÃinstrÅäºÏINÅÅÐò
½«instr½á¹û×÷Î ......
1¡¢Ñ¡È¡×îÊÊÓõÄ×Ö¶ÎÊôÐÔ
¡¡¡¡MySQL¿ÉÒԺܺõÄÖ§³Ö´óÊý¾ÝÁ¿µÄ´æÈ¡£¬µ«ÊÇÒ»°ã˵À´£¬Êý¾Ý¿âÖеıíԽС£¬ÔÚËüÉÏÃæÖ´ÐеIJéѯҲ¾Í»áÔ½¿ì¡£Òò´Ë£¬ÔÚ´´½¨±íµÄʱºò£¬ÎªÁË»ñµÃ¸üºÃµÄÐÔÄÜ£¬ÎÒÃÇ¿ÉÒÔ½«±íÖÐ×ֶεĿí¶ÈÉèµÃ¾¡¿ÉÄÜС¡£ÀýÈ磬ÔÚ¶¨ÒåÓÊÕþ±àÂëÕâ¸ö×Ö¶Îʱ£¬Èç¹û½«ÆäÉèÖÃΪCHAR(255),ÏÔÈ»¸øÊý¾Ý¿âÔö¼ÓÁ˲»±ØÒªµÄ¿Õ¼ä£¬ÉõÖÁÊ ......
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 ......