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

javaÁ´½Ósql server

Ô­Ìû¼°ÌÖÂÛ£ºhttp://bbs.bc-cn.net/dispbbs.asp?boardid=12&id=140292
*   ×î½üÒòΪ¿ª·¢»î¶¯ÐèÒª,ÓÃÉÏÁËEclipse,²¢ÒªÇóʹÓþ«¼ò°æµÄSQLÊý¾Ý¿â(¼´SQL   Server   2005)À´½øÐпª·¢ÏîÄ¿   *
1.×¼±¸¹¤×÷:   ×¼±¸Ïà¹ØµÄÈí¼þ(Eclipse³ýÍâ,¿ªÔ´Èí¼þ¿ÉÒÔ´Ó¹ÙÍøÏÂÔØ)
<1> .Microsoft   SQL   Server   2005   Express   Edition
ÏÂÔØµØÖ·:http://download.microsoft.com/download/0/9/0/09020fab-d2c3-4a8c-b9e0-db53a7a30ae8/SQLEXPR_CHS.EXE
<2> .SQL   Server   Management   Studio
ÏÂÔØµØÖ·:http://www.microsoft.com/downloads/details.aspx?displaylang=zh-cn&FamilyID=c243a5ae-4bd1-4e3d-94b8-5a0f62bf7796#filelist
<3> .SQL   Server   2005   driver   for   JDBC
ÏÂÔØµØÖ·:http://download.microsoft.com/download/8/B/D/8BDABAE2-B6EA-41D4-B903-7916EF3690EF/sqljdbc_1.2.2323.101_enu.exe
2.¶¼ÏÂÔØÍêÖ®ºó¿ªÊ¼½øÐа²×°   ,ǰÁ½¸öÊÇÊôÓÚÊý¾Ý¿âÈí¼þ,Õý³£°²×°¼´¿É(×¢ÒâÊý¾Ý¿âµÇ½²»ÒªÊ¹ÓÃwindowsÑéÖ¤)
<1>   ½«JDBC½âѹËõµ½ÈÎÒâλÖÃ,±ÈÈç½âѹµ½CÅÌprogram   filesÏÂÃæ,²¢ÔÚ°²×°Ä¿Â¼ÀïÕÒµ½sqljdbc.jarÎļþ,µÃµ½Æä·¾¶¿ªÊ¼ÅäÖû·¾³±äÁ¿
ÔÚ»·¾³±äÁ¿classpath   ºóÃæ×·¼Ó   C:\Program   Files\Microsoft   SQL   Server2005   JDBC   Driver\sqljdbc_1.2\enu\sqljdbc.jar
<2>   ÉèÖÃSQLEXPRESS·þÎñÆ÷:
        a.´ò¿ªSQL   Server   Configuration   Manager   ->   SQLEXPRESSµÄЭÒé   ->   TCP/IP  
        b.ÓÒ¼üµ¥»÷Æô¶¯TCP/IP  
        c.Ë«»÷½øÈëÊôÐÔ,°ÑIPµØÖ·ÖеÄIP   allÖеÄTCP¶Ë¿ÚÉèÖÃΪ1433
        d.ÖØÐÂÆô¶¯SQL   Server   2005·þÎñÖеÄSQLEXPRESS·þÎñÆ÷
        e.¹Ø±ÕSQL   Server   Configuration   Manager
<3>   ´ò¿ª¸Õ¸Õ°²×°ºÃµÄ   SQL   Server   Management   Studio,Á¬½ÓSQLEXPRESS·þÎñÆ÷,   н¨Êý¾Ý¿â,ÆðÃû×ÖΪsample  
<4>   ´ò¿ªEcl


Ïà¹ØÎĵµ£º

sqlÓï·¨caseÓ÷¨

CASE ¿ÉÄÜÊÇ SQL Öб»ÎóÓÃ×î¶àµÄ¹Ø¼ü×ÖÖ®Ò»¡£ËäÈ»Äã¿ÉÄÜÒÔǰÓùýÕâ¸ö¹Ø¼ü×ÖÀ´´´½¨×ֶΣ¬µ«ÊÇËü»¹¾ßÓиü¶àÓ÷¨¡£ÀýÈ磬Äã¿ÉÒÔÔÚ WHERE 
×Ó¾äÖÐʹÓà CASE¡£ 
Ê×ÏÈÈÃÎÒÃÇ¿´Ò»Ï CASE µÄÓï·¨¡£ÔÚÒ»°ãµÄ SELECT ÖУ¬ÆäÓï·¨ÈçÏ£º 
SELECT = 
CASE 
WHEN THEN 
WHEN THEN 
ELSE  ......

SQL Databases Don't Scale £¨¼òÒ룩

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 ......

SQL×Ö·û´®´¦Àíº¯Êý»ã×Ü

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 ÂëÖµ£¬CHAR£¨£© ·µ»ØNULL ¡£
3¡¢LOWE ......

SQL ServerÊÂÎñÈÕÖ¾µÄ¼¸¸ö³£ÓòÙ×÷ [ת]

ÎÒÃÇÖªµÀ£¬SQL ServerÊÂÎñÈÕÖ¾Ö÷ÒªÊÇÓÃÀ´¼Ç¼ËùÓÐÊÂÎñ¶ÔÊý¾Ý¿âËù×öµÄÐ޸ģ¬Èç¹ûϵͳ³öÏÖ¹ÊÕÏ£¬Ëü½«³ÉΪ×îÐÂÊý¾ÝµÄΨһÀ´Ô´¡£ÈÕÖ¾µÄ²Ù×÷³£ÓÐÒÔϼ¸¸öÓ¦Óãº
Ò»¡¢ÊÂÎñÈÕÖ¾ÎļþLDFµÄ¶ªÊ§
µ±ÎÒÃDz»Ð¡É¾³ý»òÕßLDFÎļþ¶ªÊ§µÄʱºò£¬Êý¾Ý¿âֻʣÏÂMDFÎļþ£¬´Ëʱֱ½Óͨ¹ý¸½¼ÓMDFÊÇÎÞ·¨»Ö¸´Êý¾Ý¿âµÄ£¬ÄÇÎÒÃÇÔõôÑù²ÅÄָܻ´Êý¾Ý¿âÄØ?Î ......

°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¿ÚÊµÏ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ