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

×îÓÐЧÂʵÄsqlÓï¾ä£¬ÕÒµ½×îºóÒ»Ìõ¼Ç¼(MySql)

idµÝÔö£¬ÈçºÎ×îÓÐЧÂÊÕÒµ½×îºóÒ»Ìõ¼Ç¼£¿£¿
select * from tt order by id desc limit 1
or
select a.* from tt a
inner join
(select max(id) as ma from tt) b
on a.id=b.ma

select * from ±íÃû order by id desc limit 1


ʹÓÃhibernate3ÓÃHQLÓï¾äÈçºÎд£¿£¿

ÄãµÄHQLÖÐÓÐûÓÐÅÅÐò£¿

ÔÚÄãµÄË÷Òý×Ö¶ÎÉÏÓýµÐòÈ¡µÚÒ»ÌõЧÂÊÊÇ×î¸ßµÄÁË¡£

from MisGoods order by id desc limit 1;

ÕâÌõÓï¾äÀÏÊDz»¹ÜÓã¬ÊDz»ÊÇÔÚHQLÖв»ÄÜÓÃlimitÏÞÖÆ

select a.* from tt a
inner join
(select max(id) as ma from tt) b
on a.id=b.ma
Õâ¸öÄÜÔËÐÐÂð£¿

ÒýÓÃ
select a.* from tt a
inner join
(select max(id) as ma from tt) b
on a.id=b.ma
Õâ¸öÄÜÔËÐÐÂð£¿



¿ÉÒÔ

HQL£¬ÊǺܶàÊý¾Ý¿âµÄ¸öÐÔ»¯Óï¾äÎÞ·¨Ö´Ðеġ£Ö»ÄÜÓñê×¼µÄsql£¬»òÕßÖ±½ÓÈÃËûÖ´ÐÐsql¡£


Ïà¹ØÎÊ´ð£º

c,c++Á¬½Ómysql ÕÒ²»µ½Í·²¿Îļþ£¨ÐÂÊÖ£©

±àÒëÆ÷£ºC-Free4
mysql µ¥¶À°²×°µÄ£¬ÏÖÔÚΪapache+php+mysql¿ÉÒÔʹÓá£
×î½üÔÚÁ·Ï°c£¬c++£»ÏëÓÃc£¬c++Á¬½ÓÏÂÎÒµÄmysql£¬ºÃ¶àµØ·½¶à˵mysql.hÕÒ²»µ½¡£¶øÇÒÎÒmysqlûÓÐËùνµÄincludeÎļþ¼Ð°¡¡£
Íü¸ßÊÖÖ¸µãÒ»¶ ......

sql¿ÉÒÔÓÐÁ½¸öÒÔÉϵĴ¥·¢Æ÷Â𣿣¿

sql¿ÉÒÔÓÐÁ½¸öÒÔÉϵĴ¥·¢Æ÷Â𣿣¿ÎÒÖ¸µÄÊÇfor´¥·¢Æ÷£¬ÄÇÆäËûµÄÄØ£¿£¿
ʲôÒâ˼£¿

¿ÉÒÔµÄ

10¸ö¶¼Ã»ÎÊÌâ

¿ÉÊÇÎÒдÁËÁ½¸öfor insert ´¥·¢Æ÷£¬Ôì³É½ø³Ì×èÈûÁËÄØ£¿Ôõô°ìÄØ£¿Çë¸ßÈËÖ¸µã
......

eclipseÓëmySQLµÄÎÊÌâ - Java / Eclipse

ÔÚ°²×°Java±àÒëÆ÷µÄEclipseµÄʱºò£¬¶Ô»·¾³±äÁ¿½øÐÐÁËÅäÖã¬ÔÚ°²×°MySQlµÄʱºòÒ²Òª¶Ô»·¾³±äÁ¿½øÐÐÅäÖã»ÄÇôºóÃæµÄÅäÖûáÓ°ÏìÇ°ÃæµÄEclipseµÄÅäÖÃÂð£¿
Çë´ó¼Ò¶àÖ¸½Ì~£¡Ð»Ð»£¡
²»»á°Ñ£¬ÎÒÕâ¶¼×°Á赀 ÎÒϵͳÀï »¹×°ÁË ......

Mysql ʹÓÃÎÊÌâ - Java / Web ¿ª·¢

ÎÒµÄMysql ʹÓõÄʱºò ÓÃdos½¨Á¢µÄÊý¾Ý±í ÔÚdosÖÐÄÜÏÔʾ³öÖÐÎÄ 
µ«ÊÇÔÚ ÆäËûµÄ¿ÉÊÓÒ³Ãæ ºÍÍøÒ³Öж¼ÏÔʾÂÒÂë ÈçºÎ½â¾ö£¿
ÔÚmysql¿ØÖÆÌ¨:show variables like 'char%';Ìù½á¹û³öÀ´¿´¿´¡£

mysqlÃüÁîÐÐģʽÏÂ: ......

sql º¯ÊýÎÊÌâ

sql 2005Êý¾Ý¿âÎÒÏëµÃµ½Ò»×Ö·û´®Îª:
sldkf|||sdeww
erkv|||rltdk
jemcl|||ligf
¾ÍÊÇ|||ºóÃæµÄ×Ö·ûÓÐʲôº¯ÊýÄܵõ½Âð£¿ÊÇÔÚsqlÓï¾äдµÄ£¬²»ÊÇÔÚÒ³ÃæÐ´µÄ£¬ÄÇλ¸ßÊÖÀ´Ö¸½ÌÏ£¬ÐÂÊÖ£¬Ð»Ð»
ÔΠ µ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ