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 1. ´´½¨±íblog_info, ¾ßÓÐIDºÍtitleÁ½¸ö×Ö¶Î, ÆäÖÐID½«ÉèÖÃΪ×Ô¶¯Ôö³¤ÁÐ;
 2. ´´½¨ÐòÁÐ:
    create sequence sq_blog_info
    start with 1
    increment by 1
    nomaxvalue
    nocycle
    cache 10;
 3. ´´½¨´¥·¢Æ÷:
    create or replace trigger tg_blog_info
       before insert on blog_info for each row
    begin
       select sq_blog_info.nextval into :NEW.id from dual; --¡ï×¢Òâ: ´Ë´¦µÄ;ÊDZØÐëµÄ
    end;
 4. ²âÊÔ:
    insert into blog_info (title) values('a');


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ORACLE ·ÖÇø±í PARTITION table
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ÃÀ¹úPVH DB´æÔÚÐÐÁ´½Ó.ͨ¹ýÎҵļì²é,·¢ÏÖ,ÎÒÃǵÄDBͬÑù´æÔÚÐÐÇ¨ÒÆºÍÐÐÁ´½Ó.ORACLEµÄdbms_stats.gather_schema_statsÖ»»áÊÕ¼¯ÓÅ»¯Æ÷ͳ¼ÆÐÅÏ¢,²»»á¼ì²â±íµÄ¼Ç¼ÊÇ·ñ´æÔÚÐÐÇ¨ÒÆºÍÐÐÁ´½Ó.(ÎÒÔ­Ïȱ»Õâ¸ö°ü¸øÆ­ÁË,ËùÒÔÖ´ÐÐÍêdbms_stats.gather_schema_statsºóÒ»²éÊý¾Ý×Öµä:USER_TABLES,ÆäÖеÄ×Ö¶Îchain_cntֵȫΪ0).Òª¼ì²â±íµÄ¼Ç ......

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 ºÍʵ¼ÊµÄÖ÷»úÃû²»Ò»ÖÂ. ½â¾ö·½·¨ÈçÏÂ: 
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