Ò׽ؽØͼÈí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

ProxoolÀ´Á¬½Ómysql½éÉÜ

±¾ÎÄÖ÷Òª½éÉÜÁ˲ÉÓÃProxoolÀ´Á¬½ÓmysqlµÄ·½·¨£¬Í¨¹ýjava  application·½Ê½¿ÉÒÔÑéÖ¤Êý¾Ý¿âµÄÁ¬½Ó¼°»ñÈ¡±íÖеÄÊý¾Ý¡£ÎªÁËÄܹ»Ó봫ͳµÄJDBC·½Ê½µÄÁ¬½Ó½øÐбȽϣ¬±¾ÎIJÉÈ¡ÁËÁ½ÖÖ·½Ê½½øÐÐÊý¾Ý¿âµÄÁ¬½Ó£¬´úÂëÈçÏ¡£
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
import org.logicalcobwebs.proxool.configuration.JAXPConfigurator;
public class TestProxool {
public static String dburl = "jdbc:mysql://localhost:3306/dma";
public static String user = "root";
public static String password = "888888";

public static void test1() throws Exception {
String testsql = "select * from user where userID = 13";
//1£º×¢²áÇý¶¯Àà
Class.forName("com.mysql.jdbc.Driver");
//2£º´´½¨Êý¾Ý¿âÁ¬½Ó
Connection conn = DriverManager.getConnection(dburl, user, password);
//3£º´´½¨Ö´ÐÐSQLµÄ¶ÔÏó
Statement stmt = conn.createStatement();
//4£ºÖ´ÐÐSQL£¬²¢»ñÈ¡·µ»Ø½á¹û
ResultSet rs = stmt.executeQuery(testsql);
//5£º´¦Àí·µ»Ø½á¹û£¬´Ë´¦´òÓ¡²éѯ½á¹û
while (rs.next()) {
System.out.print(rs.getInt("userID") + "\t");
System.out.print(rs.getString("sourceIP") + "\t");
System.out.println();
}
//6£º¹Ø±ÕÊý¾Ý¿âÁ¬½Ó
conn.close();
}

/**
* proxool·½Ê½²âÊÔ
*
* @throws Exception
*/
public static void test2() throws Exception {
//¼ÓÔØÅäÖÃÎļþ,ÅäÖÃÎļþ¿ÉÒÔÊÇÏà¶Ô·¾¶£¬Ò²¿ÉÒÔÊǾø¶Ô·¾¶
JAXPConfigurator.configure("proxool.xml", false);
// System.out.println("You have already load the xml file");
String testsql = "select * from user where userID = 13";
//1£º×¢²áÇý¶¯À࣬ÊÇProxoolרÓõÄÇý¶¯
Class.forName("org.logicalcobwebs.proxool.ProxoolDriver");
//2£º´´½¨Êý¾Ý¿âÁ¬½Ó£¬Õâ¸ö²ÎÊýÊÇÒ»¸ö×Ö·û´®£¬ÊÇÊý¾ÝÔ´µÄ±ðÃû£¬ÔÚÅäÖÃÎļþÖÐÅäÖõÄdma£¬²ÎÊý¸ñʽΪ£ºproxool.Êý¾ÝÔ´µÄ±ðÃû
Connection conn = DriverManage


Ïà¹ØÎĵµ£º

ÈçºÎÖ´ÐÐÒ»¸ömysqlµÄsql½Å±¾Îļþ


2009-12-08 18:53
sql½Å±¾ÊÇ°üº¬Ò»µ½¶à¸ösqlÃüÁîµÄsqlÓï¾ä£¬ÎÒÃÇ¿ÉÒÔ½«ÕâЩsql½Å±¾·ÅÔÚÒ»¸öÎı¾ÎļþÖУ¨ÎÒÃdzÆ֮Ϊ“sql½Å±¾Îļþ”£©£¬È»ºóͨ¹ýÏà¹ØµÄÃüÁîÖ´ÐÐÕâ¸ösql½Å±¾Îļþ¡£»ù±¾²½ÖèÈçÏ£º
1¡¢´´½¨°üº¬sqlÃüÁîµÄsql½Å±¾Îļþ
ÎļþÖаüº¬Ò»Ð©ÁеÄsqlÓï¾ä£¬Ã¿ÌõÓï¾ä×îºóÒÔ;½á⣬ÎļþÄÚÈÝʾÀýÈçÏ£º
--´´½ ......

Mysql Explain Ïê½â[Ç¿ÁÒÍƼö]

Mysql Explain Ïê½â
Ò».Óï·¨
explain < table_name >
ÀýÈç: explain select * from t3 where id=3952602;
¶þ.explainÊä³ö½âÊÍ
+----+-------------+-------+-------+-------------------+---------+---------+-------+------+-------+
| id | select_type | table | type  | possible_keys  &nb ......

MYSQLÊý¾Ý¿âµÄ±¸·ÝÓë»Ö¸´

±¸·ÝÓë»Ö¸´ÔÚÈκÎÊý¾Ý¿âÀïÃ涼ÊǷdz£ÖØÒªµÄÄÚÈÝ£¬ÌرðÊÇËæ×ÅÊý¾ÝÁ¿µÄÔö¼Ó£¬±¸·ÝÎÊÌâ»áÔ½À´Ô½Í»³ö£¬Òò´Ë£¬ºÃµÄ±¸·Ý·½·¨Ó뱸·Ý²ßÂÔÊǷdz£ÖØÒªµÄ¡£½áºÏÎÒËù×öµÄÏîÄ¿±¾Éí£¬ÏÂÃæÖ÷Òª¾Íwindowsƽ̨ÏÂMySQL(5.0)Êý¾Ý¿âµÄ³£Óñ¸·ÝÓë»Ö¸´×öһЩ×ܽᡣ
 
 
1       Ïà¹Ø×¼±¸¹¤×÷
  ......

MySQL ³£¼û´íÎó´úÂë¶ÔÕÕ±í

1005£º´´½¨±íʧ°Ü
1006£º´´½¨Êý¾Ý¿âʧ°Ü
1007£ºÊý¾Ý¿âÒÑ´æÔÚ£¬´´½¨Êý¾Ý¿âʧ°Ü
1008£ºÊý¾Ý¿â²»´æÔÚ£¬É¾³ýÊý¾Ý¿âʧ°Ü
1009£º²»ÄÜɾ³ýÊý¾Ý¿âÎļþµ¼ÖÂɾ³ýÊý¾Ý¿âʧ°Ü Chinaz.com
1010£º²»ÄÜɾ³ýÊý¾ÝĿ¼µ¼ÖÂɾ³ýÊý¾Ý¿âʧ°Ü
1011£ºÉ¾³ýÊý¾Ý¿âÎļþʧ°Ü
1012£º²»ÄܶÁȡϵͳ±íÖеļǼ
1020£º¼Ç¼Òѱ»ÆäËûÓû§ÐÞ¸Ä
10 ......

mysql³£ÓÃÃüÁî

mysql³£ÓÃÃüÁî 
  
¹Ø±ÕÊý¾Ý¿â
/data01/mysql/bin/mysqladmin -p shutdown
µ¼³öÊý¾Ý¿â
/usr/local/mysql/bin/mysqldump -opt -uroot -p -h10.15.0.45 bbsdb > 20070918.bbsdb.sql
µ¼ÈëÊý¾Ý¿â
/usr/local/mysql/bin/mysql target_db_name < backup-file.sql
ÏÞÖÆÖ»ÓÐÄÚ²¿ip¿ÉÒÔÁ´½Ó
/u ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØͼ | ¸ÓICP±¸09004571ºÅ