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http://www.aygfsteel.com/SkyWinder/category/43043.htmlJust try to find my memorize...zh-cnTue, 11 Sep 2012 20:50:32 GMTTue, 11 Sep 2012 20:50:32 GMT60- sybaseä¸ä‹É用bcp命ä×o导出导入表数æ?/title><link>http://www.aygfsteel.com/SkyWinder/archive/2012/09/11/387484.html</link><dc:creator>æž«ä¸çŽŽçŽ²</dc:creator><author>æž«ä¸çŽŽçŽ²</author><pubDate>Tue, 11 Sep 2012 08:57:00 GMT</pubDate><guid>http://www.aygfsteel.com/SkyWinder/archive/2012/09/11/387484.html</guid><wfw:comment>http://www.aygfsteel.com/SkyWinder/comments/387484.html</wfw:comment><comments>http://www.aygfsteel.com/SkyWinder/archive/2012/09/11/387484.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.aygfsteel.com/SkyWinder/comments/commentRss/387484.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/SkyWinder/services/trackbacks/387484.html</trackback:ping><description><![CDATA[ 摘è¦: sybaseä¸ä‹É用bcp命ä×o导出导入表数æ?nbsp; <a href='http://www.aygfsteel.com/SkyWinder/archive/2012/09/11/387484.html'>阅读全文</a><img src ="http://www.aygfsteel.com/SkyWinder/aggbug/387484.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/SkyWinder/" target="_blank">æž«ä¸çŽŽçŽ²</a> 2012-09-11 16:57 <a href="http://www.aygfsteel.com/SkyWinder/archive/2012/09/11/387484.html#Feedback" target="_blank" style="text-decoration:none;">å‘表评论</a></div>]]></description></item><item><title>oracle cluster(½?的简å•ä‹Éç”?/title><link>http://www.aygfsteel.com/SkyWinder/archive/2009/12/10/305413.html</link><dc:creator>æž«ä¸çŽŽçŽ²</dc:creator><author>æž«ä¸çŽŽçŽ²</author><pubDate>Thu, 10 Dec 2009 06:09:00 GMT</pubDate><guid>http://www.aygfsteel.com/SkyWinder/archive/2009/12/10/305413.html</guid><wfw:comment>http://www.aygfsteel.com/SkyWinder/comments/305413.html</wfw:comment><comments>http://www.aygfsteel.com/SkyWinder/archive/2009/12/10/305413.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.aygfsteel.com/SkyWinder/comments/commentRss/305413.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/SkyWinder/services/trackbacks/305413.html</trackback:ping><description><![CDATA[1.cluster å¯ä»¥ž®†ä¸¤ä¸ªæˆ–多个表憾l‘在一èµ?,cluster是一¿Uæ•°æ®åº“¾l“æž„,在这个结构ä¸,å¯ä»¥ž®†ä¸¤ä¸ªæˆ–者多个表储å˜åœ¨ç›¸åŒçš„æ•°æ®å—或ŒDµä¸,åŠ å…¥åˆ°clusterä¸çš„æ¯ä¸ªè¡¨è¡Œž®†ç‰©ç†åœ°å˜å‚¨åœ¨ç›¸åŒçš„å—ä¸,好僘q™äº›è¡¨åœ¨cluster key 处连接è“væ¥äº†ä¸€æ ?通过下é¢çš„例å?ä½ å°†ç†è§£cluster如何的工ä½?<br />
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aa è¡?br />
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SQL> select * from aa;<br />
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ID NAME SE AGE<br />
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---- ---- -- ----------<br />
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01 cc m 20<br />
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02 dd f 18<br />
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03 ee m 22<br />
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04 ff f 21<br />
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05 gg f 19<br />
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06 hh m 20<br />
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已选择6行�br />
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bbè¡?br />
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SQL> select * from bb;<br />
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SE LIVING<br />
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-- ------<br />
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m 11-01<br />
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f 11-02<br />
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2.在ä‹É用aa,bb表的时å€?如果惌™¦ž®†è¿™ä¸¤ä¸ªè¡¨æ”¾åˆîC¸€ä¸ªclusterä¸?则å¯ä»¥å°†˜q™ä¸¤ä¸?br />
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表在sex列上˜qžæŽ¥èµäh¥,在这¿U情况下,å§sex列称为cluster key ,当完æˆclusterçš?br />
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创å¾å?两个表ä¸çš„æ•°æ®å°†ä¼šåœ¨clusterä¸ç‰©ç†åœ°˜qžæŽ¥èµäh¥.在创建cluster的时候有两ç§é€‰æ‹©:<br />
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* index cluster(默认,需è¦åœ¨å…¶ä¸åˆ›å¾cluster index)<br />
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* hash cluster<br />
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3.创å¾clusterçš„æ¥éª?<br />
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1). SQL> create cluster ab_cluster (sex char(2) ) tablespace users;<br />
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½‡å·²åˆ›å¾ã€?br />
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上é¢çš„è¯å¥åˆ›å»ÞZº†ä¸€ä¸ªå为ab_clusterçš„cluster,且将它置于表½Iºé—´usrsä¸?å› äؓ上é¢åˆ›å¾çš„是index cluster ,所以当cluster创å¾å®ŒåŽ,˜q˜å¿…™åÕdœ¨cluster key 上创建烦å¼?<br />
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2). SQL> create index ab_cluster_idx on cluster ab_cluster tablespace users;<br />
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索引已创建�br />
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{ 当创建hash clusterçš„æ—¶å€?例å如下:<br />
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Create cluster ab_cluster (sex char(2) size 8k hashkeys 1000 tablespace users;<br />
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å‚æ•°hashkeys用æ¥å®šä¹‰åˆ†é…¾l™è¡¨çš„hash]值的数目.指出了在clusterä¸å”¯ä¸€æ€§cluster key的最大å€?}<br />
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3).创å¾å‚与cluster的表.åQˆaa bbåQ?br />
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SQL> create table aa(id varchar2(4) ,name varchar2(4),sex char(2),age number(2)) <br />
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cluster ab_cluster (sex);<br />
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表已创å¾.<br />
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SQL> create table bb( sex char(2) , living varchar(6)) cluster ab_cluster (sex);<br />
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表已创å¾ã€?br />
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4.åˆ é™¤cluster.<br />
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åœ¨åˆ é™¤clusterçš„æ—¶å€?é¦–å…ˆå¿…é¡»åˆ é™¤å‚与该cluster的表或者ä‹É用including tablesåå¥.ä¸èƒ½ä»Žæ£åœ¨ä‹É用的clusteråˆ é™¤è¡?<br />
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SQL> drop cluster ab_cluster including tables cascade constraints;<br />
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½‡å·²åˆ 除ã€?
<img src ="http://www.aygfsteel.com/SkyWinder/aggbug/305413.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/SkyWinder/" target="_blank">æž«ä¸çŽŽçŽ²</a> 2009-12-10 14:09 <a href="http://www.aygfsteel.com/SkyWinder/archive/2009/12/10/305413.html#Feedback" target="_blank" style="text-decoration:none;">å‘表评论</a></div>]]></description></item><item><title>oracle查看表的相关信æ¯http://www.aygfsteel.com/SkyWinder/archive/2009/12/10/305395.htmlæž«ä¸çŽŽçŽ²æž«ä¸çŽŽçŽ²Thu, 10 Dec 2009 03:30:00 GMThttp://www.aygfsteel.com/SkyWinder/archive/2009/12/10/305395.htmlhttp://www.aygfsteel.com/SkyWinder/comments/305395.htmlhttp://www.aygfsteel.com/SkyWinder/archive/2009/12/10/305395.html#Feedback0http://www.aygfsteel.com/SkyWinder/comments/commentRss/305395.htmlhttp://www.aygfsteel.com/SkyWinder/services/trackbacks/305395.html阅读全文
]]> - MySql日期函数åQšdate_format˜q用~http://www.aygfsteel.com/SkyWinder/archive/2009/01/13/251191.htmlæž«ä¸çŽŽçŽ²æž«ä¸çŽŽçŽ²Tue, 13 Jan 2009 14:12:00 GMThttp://www.aygfsteel.com/SkyWinder/archive/2009/01/13/251191.htmlhttp://www.aygfsteel.com/SkyWinder/comments/251191.htmlhttp://www.aygfsteel.com/SkyWinder/archive/2009/01/13/251191.html#Feedback0http://www.aygfsteel.com/SkyWinder/comments/commentRss/251191.htmlhttp://www.aygfsteel.com/SkyWinder/services/trackbacks/251191.html阅读全文
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