°ÑSqlÊý¾Ýת»»ÎªÒµÎñÊý¾ÝµÄ¼¸ÖÖ·½·¨
ORMϵͳ±ØÐë°ÑÊý¾Ý¿âÖеÄÊý¾Ýת»»ÎªÒµÎñÊý¾Ý£¬×ª»»µÄ·½·¨´óÖÂÓÐ3ÖÖ£¬±¾ÎľÍÊÔͼ¶ÔËüÃÇ×öһЩ¼òµ¥·ÖÎö¡£
1¡¢ÊôÐÔ·´Éä¡£¾ÍÊÇͨ¹ý·´É䣬»ñȡҵÎñʵÌåÀàµÄ¸÷¸öÊôÐÔ£¬È»ºóÔÙÉèÖÃÕâЩÊôÐÔµÄÖµ¡£Õâ¸ö·½·¨×î¼òµ¥¡¢×îÎȶ¨¡¢Í¨ÓÃÐÔ×îÇ¿¡¢¿Éά»¤ÐÔ×îÇ¿¡¢ÐÔÄÜ×î²î¡£ÀýÈçNHibernate¾ÍÊÇÓÃÕâÖÖ·½·¨ÊµÏֵģ¬Ëüͨ¹ýIGetterºÍISetter½Ó¿ÚʵÏÖ¶Ôij¸öÒµÎñʵÌåÀàÊôÐԵĶÁÈ¡ºÍдÈë¡£DongLiORMµÄÔçÆÚ°æ±¾Ò²ÊÇÓõÄÕâÖÖ·½·¨£¬Ëûͨ¹ýBusinessObjectµÄÊôÐÔË÷ÒýÆ÷ʵÏÖ¡£ÆäÔÀí¾ÍÊÇÊ×ÏÈͨ¹ý»ñȡij¸öÒµÎñʵÌåÀàij¸öÊôÐÔµÄPropertyInfo£¬È»ºóµ÷ÓøÃPropertyInfoµÄGetValue»òÕßSetValue·½·¨¡£ÀàËÆµÄ´úÂëÈçÏ£º
PropertyInfo info = BusinessType.GetProperty(PropertyName);
info.SetValue(this, value, null);
±ÈÈ磬ÏÖÔÚÓÐÒ»¸öÒµÎñʵÌåÀàUserItem£¬Æä¶¨ÒåÈçÏ£º
public class UserItem
{
public UserItem() { }
private string _userid;
private string _username;
private string _pwd;
private string _email;
public string UserID
{
set { _userid = value; }
get { return _userid; }
}
public string UserName
{
set { _username = value; }
get { return _username; }
}
public string Pwd
{
set { _pwd = value; }
 
Ïà¹ØÎĵµ£º
sql º¯Êý×ܽá
³£ÓõÄ×Ö·û´®º¯ÊýÓУº
Ò»¡¢×Ö·ûת»»º¯Êý
1¡¢ASCII()
·µ»Ø×Ö·û±í´ïʽ×î×ó¶Ë×Ö·ûµÄASCII ÂëÖµ¡£ÔÚASCII£¨£©º¯ÊýÖУ¬´¿Êý×ÖµÄ×Ö·û´®¿É²»ÓÑ’À¨ÆðÀ´£¬µ«º¬ÆäËü×Ö·ûµÄ×Ö·û´®±ØÐëÓÑ’À¨ÆðÀ´Ê¹Ó㬷ñÔò»á³ö´í¡£
2¡¢CHAR()
½«ASCII Âëת»»Îª×Ö·û¡£Èç¹ûûÓÐÊäÈë0 ~ 255 Ö®¼äµÄASCII ......
MYSQL¿ÉÒÔÔÚ¿ØÖÆÌ¨Ï½øÐвÙ×÷£¬ÀûÓÃÃüÁî
SQL´úÂë
mysql -h localhost -u root -p123456
¾Í¿ÉÒԵǽMYSQLµÄ¿ØÖÆÌ¨¡£
sql serverÒ²ÌṩÁË¿ØÖÆÌ¨ÏµIJÙ×÷¹¦ÄÜ¡£
ÔÚSQL SERVERµÄ binnĿ¼Ï£¬ÌṩÁËosql.exeÓëisql.exeÕâÁ½¸öÎļþ¡£
ÕâÁ½¸ö³ÌÐò¶¼ÌṩÁË·ÃÎÊSQL SERVERµÄ¹¦ÄÜ£¬ÕâÁ ......
ÎÒ¾³£ÎʵÄÒ»¸öÎÊÌâÊÇ£ºÄãÊÇÈçºÎÀ´À©Õ¹SQL DatabaseµÄ£¿ÓкܶàµÄ·½·¨¿ÉÒÔ×öµ½£¬±ÈÈçʹÓûº´æ£¬¹²Ïí»òÕßÓÃÆäËûµÄ¼¼Êõ½«Ñ¹Á¦´ÓÊý¾Ý¿âÊÍ·Å£¬µ«Êµ¼ÊÉÏÎÒÃÇûÓС£SQL Database´Ó¸ù±¾ÉÏÀ´ËµÊDz»¾ßÓÐÀ©Õ¹ÐԵģ¬ÎÒÃÇҲûÓÐħ·¨Ê¹ËüºöÈ»¾ßÓÐÀ©Õ¹ÐÔ¡£
ʲôÊÇÀ©Õ¹ÐÔ£¿
±ØÐë¾ßÓм¸Ï¼¸µã£º
ºáÏòÀ©Õ¹£º¸ü¶àµÄserver¿ÉÒÔ´øÀ´¸ü¸ßµÄÐÔÄÜ ......
ÈçºÎÉú³Éexplain plan?
¡¡¡¡½â´ð:ÔËÐÐutlxplan.sql. ½¨Á¢plan ±í
¡¡¡¡Õë¶ÔÌØ¶¨SQLÓï¾ä£¬Ê¹Óà explain plan set statement_id = 'tst1' into plan_table
¡¡¡¡ÔËÐÐutlxplp.sql »ò utlxpls.sql²ì¿´explain plan
EXPLAIN PLAN ÊÇÒ»¸öºÜºÃµÄ·ÖÎöSQLÓï¾äµÄ¹¤¾ß,ËüÉõÖÁ¿ÉÒÔÔÚ²»Ö´ÐÐSQLµÄÇé¿öÏ·ÖÎöÓï¾ä. ͨ¹ý·ÖÎö,ÎÒÃǾͿÉÒÔÖ ......
SQL *PLUS RepostµÄ¿ª·¢·½·¨
ʹÓÃSQL*PLUS ¿ÉÖ±½ÓÔÚIE BrowserÖÐÉú³É¹æÕûµÄ×Ö·ûÐÍReport. ʵÏÖ·½·¨¼òµ¥£¬²¼ÊðÈÝÒס£
·½·¨:
1. ÀûÓÃÎı¾±à¼Æ÷±àдSQL*PLUS ½Å±¾£¬±£´æ³É .sql Îļþ¡£
2. ÉÏ´«sql ÎļþÖÁÓ¦ÓõÄsql Ŀ¼¡£
3.  ......