ÔÚ´ò°ü³ÌÐòÖÐ×Ô¶¯°²×°SQL ServerÊý¾Ý¿â
1¡¢´´½¨°²×°ÏîÄ¿“Setup1”°²×°ÏîÄ¿
ÔÚ“Îļþ”²Ëµ¥ÉÏÖ¸Ïò“Ìí¼ÓÏîÄ¿”£¬È»ºóÑ¡Ôñ“н¨ÏîÄ¿”¡£
ÔÚ“Ìí¼ÓÐÂÏîÄ¿”¶Ô»°¿òÖУ¬Ñ¡Ôñ“ÏîÄ¿ÀàÐÍ”´°¸ñÖеē°²×°ºÍ²¿ÊðÏîÄ¿”£¬È»ºóÑ¡Ôñ“Ä£°å”´°¸ñÖеē°²×°ÏîÄ¿”¡£ÔÚ“Ãû³Æ”¿òÖмüÈë “setup1”¡£
µ¥»÷“È·¶¨”¹Ø±Õ¶Ô»°¿ò¡£
ÏîÄ¿±»Ìí¼Óµ½½â¾ö·½°¸×ÊÔ´¹ÜÀíÆ÷ÖУ¬²¢ÇÒÎļþϵͳ±à¼Æ÷´ò¿ª¡£
ÔÚ“ÊôÐÔ”´°¿ÚÖУ¬Ñ¡Ôñ ProductName ÊôÐÔ£¬²¢¼üÈë”ÒÚÍòµçÆ÷³ÉÌ×±¨¼Ûϵͳ”¡£
2¡¢ÔÚ°²×°ÏîÄ¿Öд´½¨°²×°³ÌÐòÀࣨinstall.cs£©¡£
Ìí¼Ó´´½¨Êý¾Ý¿â£¨InstallDatabase.txt£©¡¢É¾³ýÊý¾Ý¿â£¨DropDatabase.txt£©¡¢³õʼ»¯Êý¾Ý»ù±¾Êý¾Ý(InitializeData.txt)½Å±¾Îļþ£¬½«ÊôÐÔ“Éú³É²Ù×÷”ÉèΪ“ǶÈëµÄ×ÊÔ´”¡£´úÂëÈçÏ£º
using System;
using System.Collections;
using System.ComponentModel;
using System.Configuration.Install;
using System.Data;
using System.Data.SqlClient;
using System.IO;
using System.Reflection;
using System.Text.RegularExpressions;
using System.Windows.Forms;
using System.Text;
using Microsoft.Win32;
namespace install
{
/// <summary>
/// Installer µÄժҪ˵Ã÷¡£
/// </summary>
[RunInstaller(true)]
public class Installer : System.Configuration.Install.Installer
{
/// <summary>
/// ±ØÐèµÄÉè¼ÆÆ÷±äÁ¿¡£
/// </summary>
string conStr="packet size=4096;integrated security=SSPI;"+
"data source=\"(local)\";persist security info=False;"+
"initial catalog=master;connect timeo
Ïà¹ØÎĵµ£º
±¾ÎÄÑÝʾÁË SQL Server 2008 ·ÖÇø±íʵÀý;
1. ´´½¨²âÊÔÊý¾Ý¿â £»
2. ´´½¨·ÖÇøº¯Êý;
3. ´´½¨·ÖÇø¼Ü¹¹;
4. ´´½¨·ÖÇø±í;
5. ´´½¨·ÖÇøË÷Òý ;
6. ·ÖÇøÇл» ;
7. ²éѯÄÄЩ±íʹÓÃÁË·ÖÇø±í£»
-- ×÷³ÉÕß leno
-- ÈÕÆÚ: 2009-06-06 23:50:01.700
-- ......
ÏÈÕ¾ÔÚÓ¦ÓóÌÐòµÄ½Ç¶È˵˵ËüÃǵIJ»Í¬¡£
1¡¢ Ö±½ÓÆ´ SQL
¾ÍÏñ´ó¼ÒÁ˽âµÄÄÇÑù£¬Ö±½ÓÆ´ SQL ´øÀ´ÁË SQL ×¢Èë¹¥»÷£¬´øÀ´ÁËÆ´Ê±Ð©ÐíµÄÐÔÄÜËðʧ£¬µ«ÊÇÆ´²»ÓÃÌí¼Ó SqlParameter £¬»áÉÙдºÜ¶à´úÂë——ºÜ¶àÈËϲ»¶Ö±½ÓÆ´£¬Ò²Ðí¾ÍÒòΪÕâµã¡£ÕâÖÖ×ö·¨»á°ÑÄãÆ´ºÃµÄ SQL ÔÑùÖ±½Ó·¢Ë͵½ DB ·þÎñÆ÷È¥Ö´ÐС££¨×¢ÒâÀàËÆ &rdquo ......
ÎÒÃÇÏÈ¿´ NestedLoop ºÍ MergeJoin µÄËã·¨£¨ÒÔÏÂΪÒýÓ㬼û RicCC µÄ¡¶ ͨÍùÐÔÄÜÓÅ»¯µÄÌìÌà - µØÓü JOIN ·½·¨ËµÃ÷ ¡· ):
==================================
NestedLoop:
foreach rowA in tableA where tableA.col2=?
{
search rowsB from tableB where tableB.c ......
ÉÏ»ØÎÒÃÇ˵µ½ÆÀ¹ÀÒ»ÌõÓï¾äÖ´ÐÐЧÂÊÖ÷Òª¿´Âß¼ IO £¨É¶ÊÇÂß¼ IO £¬É¶ÊÇÎïÀí IO ¼ûÁª»úÎĵµ£©£¬Õâ´ÎÎÒÃǼÌÐø¡£
ÎÒÃÇÏÈ˵˵£¬·µ»Ø¶àÐнá¹ûʱ£¬ÎªÊ²Ã´ SQLServer ÓÐʱ»áÑ¡Ôñ index seek £¬ÓÐʱ»áÑ¡Ôñ index scan ¡£
ÒÔ nonclustered index ΪÀý˵Ã÷¡£
ÏñËùÓеÄË÷Òý B Ê÷Ò»Ñù£¬·Ç¾Û¼¯Ë÷ÒýÊ÷Ò²°üÀ¨ÍêÈ«ÓÉË÷ÒýÊý¾Ý×é³ÉµÄ¸ù½ ......
ΪʲôÐèÒªÊý¾ÝѹËõ
¡¡¡¡Ê×ÏÈ¿ÉÄÜÐèÒªÌÖÂÛµÄÎÊÌâ¾ÍÊÇΪʲôÔÚ´æ´¢³É±¾²»¶Ï½µµÍµÄ½ñÌ죬΢Èí»¹ÒªÉ··Ñ¿àÐĵØÔÚSQL ServerÖÐʵÏÖ²¢ÇÒ²»¶Ï¸Ä½øÊý¾ÝѹËõ¼¼ÊõÄØ?
¡¡¡¡¾¡¹Ü´æ´¢³É±¾ÒѾ²»ÔÙÊÇ´«Í³ÒâÒåÉϵÄÊ×Òª¿¼ÂÇÒòËØ£¬µ«ÊÇÕâ²¢²»´ú±íÊý¾Ý¿â³ß´ç²»ÊÇÒ»¸öÎÊÌ⣬ÒòΪÊý¾Ý¿â³ß´ç³ýÁË»áÓ°Ïìµ½´æ´¢³É±¾Ö®Í⣬»¹¼«´óµØ¹ØÁªµ½¹ÜÀí³É±¾º ......