{"id":889,"date":"2009-07-29T02:20:40","date_gmt":"2009-07-29T06:20:40","guid":{"rendered":"http:\/\/www.killtest.hk\/?p=889"},"modified":"2009-07-29T02:20:40","modified_gmt":"2009-07-29T06:20:40","slug":"oracle-10g-dba","status":"publish","type":"post","link":"https:\/\/www.killtest.hk\/index.php\/oracle\/oracle-10g-dba\/","title":{"rendered":"\u5982\u4f55\u522a\u9664\u6578\u64da\u5eab\u4e2d\u91cd\u5fa9\u6c92\u7528\u6578\u64da"},"content":{"rendered":"<p>\u5728\u5c0d\u6578\u64da\u5eab\u9032\u884c\u64cd\u4f5c\u904e\u7a0b\u4e2d\u6211\u5011\u53ef\u80fd\u6703\u78b0\u5230\u9019\u7a2e\u60c5\u6cc1\uff0c\u8868\u4e2d\u7684\u6578\u64da\u53ef\u80fd\u91cd\u5fa9\u51fa\u73fe\uff0c\u4f7f\u6211\u5011\u5c0d\u6578\u64da\u5eab\u7684\u64cd\u4f5c\u904e\u7a0b\u4e2d\u5e36\u4f86\u5f88\u591a\u7684\u4e0d\u4fbf\uff0c\u90a3\u9ebc\u600e\u9ebc\u522a\u9664\u9019\u4e9b\u91cd\u5fa9\u6c92\u6709\u7528\u7684\u6578\u64da\u5462?\u91cd\u5fa9\u6578\u64da\u522a\u9664\u6280\u8853\u53ef\u4ee5\u63d0\u4f9b\u66f4\u5927\u7684\u5099\u4efd\u5bb9\u91cf\uff0c\u5be6\u73fe\u66f4\u9577\u6642\u9593\u7684\u6578\u64da\u4fdd\u7559\uff0c\u9084\u80fd\u5be6\u73fe\u5099\u4efd\u6578\u64da\u7684\u6301\u7e8c\u9a57\u8b49\uff0c<a title=\"DBA\" href=\"http:\/\/www.killtest.net\/10gDBA\/\">Oracle 10G DBA<\/a>\u9032\u6b65\u6578\u64da\u6062\u5fa9\u670d\u52d9\u6c34\u5e73\uff0c\u65b9\u4fbf\u5be6\u73fe\u6578\u64da\u5bb9\u707d\u7b49\u3002\u91cd\u5fa9\u7684\u6578\u64da\u53ef\u80fd\u6709\u9019\u6d0b\u5169\u7a2e\u60c5\u6cc1\uff0c\u7b2c\u58f9\u7a2e\u6642\u8868\u4e2d\u53ea\u6709\u67d0\u4e9b\u5b57\u6bb5\u58f9\u6d0b\uff0c\u7b2c\u4e8c\u7a2e\u662f\u5169\u884c\u8a18\u9304\u5b8c\u5168\u58f9\u6d0b\u3002Oracle\u6578\u64da\u5eab\u91cd\u5fa9\u6578\u64da\u522a\u9664\u6280\u8853\u6709\u5982\u4e0b\u512a\u52e2\uff1a\u66f4\u5927\u7684\u5099\u4efd\u5bb9\u91cf\u3001\u6578\u64da\u80fd\u5f97\u5230\u6301\u7e8c\u9a57\u8b49\u3001\u6709\u66f4\u9ad8\u7684\u6578\u64da\u6062\u5fa9\u670d\u52d9\u6c34\u5e73\u3001\u65b9\u4fbf\u5be6\u73fe\u5099\u4efd\u6578\u64da\u7684\u5bb9\u707d\u3002<\/p>\n<p>\u58f9\u3001\u522a\u9664\u90e8\u5206\u5b57\u6bb5\u91cd\u5fa9\u6578\u64da<\/p>\n<p>\u5148\u4f86\u8ac7\u8ac7\u5982\u4f55\u67e5\u8a62\u91cd\u5fa9\u7684\u6578\u64da\u5427\u3002<br \/>\n\u4e0b\u9762\u8a9e\u53e5\u53ef\u4ee5\u67e5\u8a62\u51fa\u90a3\u4e9b\u6578\u64da\u662f\u91cd\u5fa9\u7684\uff1a<br \/>\nselect \u5b57\u6bb51,\u5b57\u6bb52,count(*) from \u8868\u540d group by \u5b57\u6bb51,\u5b57\u6bb52 having count(*) &gt; 1<br \/>\n\u5c07\u4e0a\u9762\u7684&gt;\u865f\u6539\u70ba=\u865f\u5c31\u53ef\u4ee5\u67e5\u8a62\u51fa\u6c92\u6709\u91cd\u5fa9\u7684\u6578\u64da\u4e86\u3002<br \/>\n\u60f3\u8981\u522a\u9664\u9019\u4e9b\u91cd\u5fa9\u7684\u6578\u64da\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e0b\u9762\u8a9e\u53e5\u9032\u884c\u522a\u9664<br \/>\ndelete from \u8868\u540d a where \u5b57\u6bb51,\u5b57\u6bb52 in<\/p>\n<p>(select \u5b57\u6bb51,\u5b57\u6bb52,count(*) from \u8868\u540d group by \u5b57\u6bb51,\u5b57\u6bb52 having count(*) &gt; 1)<\/p>\n<p>\u4e0a\u9762\u7684\u8a9e\u53e5\u975e\u5e38\u9593\u55ae\uff0c\u5c31\u662f\u5c07\u67e5\u8a62\u5230\u7684\u6578\u64da\u522a\u9664\u6389\u3002\u4e0d\u904e\u9019\u7a2e\u522a\u9664\u57f7\u884c\u7684\u6548\u7387\u975e\u5e38\u4f4e\uff0c\u5c0d\u65bc\u5927\u6578\u64da\u91cf\u4f86\u8aaa\uff0c\u53ef\u80fd\u6703\u5c07\u6578\u64da\u5eab\u540a\u6b7b\u3002\u6240\u4ee5\u6211\u5efa\u8b70\u5148\u5c07\u67e5\u8a62\u5230\u7684\u91cd\u5fa9\u7684\u6578\u64da\u63d2\u5165\u5230\u58f9\u500b\u66ab\u6642\u8868\u4e2d\uff0c\u7136\u5f8c\u5c0d\u9032\u884c\u522a\u9664\uff0c\u9019\u6d0b\uff0c\u57f7\u884c\u522a\u9664\u7684\u6642\u5019\u5c31\u4e0d\u7528\u518d\u9032\u884c\u58f9\u6b21\u67e5\u8a62\u4e86\u3002\u5982\u4e0b\uff1a<\/p>\n<p>create TABLE \u66ab\u6642\u8868 AS<br \/>\n(select \u5b57\u6bb51,\u5b57\u6bb52,count(*) from \u8868\u540d group by \u5b57\u6bb51,\u5b57\u6bb52 having count(*) &gt; 1)<\/p>\n<p>\u4e0a\u9762\u9019\u53e5\u8a71\u5c31\u662f\u5efa\u7acb\u4e86\u66ab\u6642\u8868\uff0c\u4e26\u5c07\u67e5\u8a62\u5230\u7684\u6578\u64da\u63d2\u5165\u5176\u4e2d\u3002<\/p>\n<p>\u4e0b\u9762\u5c31\u53ef\u4ee5\u9032\u884c\u9019\u6d0b\u7684\u522a\u9664\u64cd\u4f5c\u4e86\uff1a<\/p>\n<p>delete from \u8868\u540d a where \u5b57\u6bb51,\u5b57\u6bb52 in (select \u5b57\u6bb51\uff0c\u5b57\u6bb52 from \u66ab\u6642\u8868);<br \/>\n\u9019\u7a2e\u5148\u5efa\u66ab\u6642\u8868\u518d\u9032\u884c\u522a\u9664\u7684\u64cd\u4f5c\u8981\u6bd4\u76f4\u63a5\u7528\u58f9\u689d\u8a9e\u53e5\u9032\u884c\u522a\u9664\u8981\u9ad8\u6548\u5f97\u591a\u3002<br \/>\n\u9019\u500b\u6642\u5019\uff0c\u5927\u5bb6\u53ef\u80fd\u6703\u8df3\u51fa\u4f86\u8aaa\uff0c\u4ec0\u9ebc?\u59b3\u53eb\u6211\u5011\u57f7\u884c\u9019\u7a2e\u8a9e\u53e5\uff0c\u90a3\u4e0d\u662f\u628a\u6240\u6709\u91cd\u5fa9\u7684\u5168\u90fd\u522a\u9664\u55ce?\u800c\u6211\u5011\u60f3\u4fdd\u7559\u91cd\u5fa9\u6578\u64da\u4e2d\u6700\u65b0\u7684\u58f9\u689d\u8a18\u9304\u554a!\u5927\u5bb6\u4e0d\u8981\u6025\uff0c\u4e0b\u9762\u6211\u5c31\u8b1b\u58f9\u4e0b\u5982\u4f55\u9032\u884c\u9019\u7a2e\u64cd\u4f5c\u3002<\/p>\n<p>\u5728oracle\u4e2d\uff0c\u6709\u500b\u96b1\u85cf\u4e86\u81ea\u52d5rowid\uff0c\u88cf\u9762\u7d66\u6bcf\u689d\u8a18\u9304\u58f9\u500b\u552f\u58f9\u7684rowid\uff0c\u6211\u5011\u5047\u5982\u60f3\u4fdd\u7559\u6700\u65b0\u7684\u58f9\u689d\u8a18\u9304\uff0c<br \/>\n\u6211\u5011\u5c31\u53ef\u4ee5\u5229\u7528\u9019\u500b\u5b57\u6bb5\uff0c\u4fdd\u7559\u91cd\u5fa9\u6578\u64da\u4e2drowid\u6700\u5927\u7684\u58f9\u689d\u8a18\u9304\u5c31\u53ef\u4ee5\u4e86\u3002<br \/>\n\u4e0b\u9762\u662f\u67e5\u8a62\u91cd\u5fa9\u6578\u64da\u7684\u58f9\u500b\u4f8b\u5b50\uff1a<br \/>\n\u4ee5\u4e0b\u662f\u5f15\u7528\u7247\u6bb5\uff1a<br \/>\nselecta.rowid,a.*from\u8868\u540da\u3000<br \/>\n\u3000\u3000wherea.rowid!=\u3000<br \/>\n\u3000\u3000(\u3000<br \/>\n\u3000\u3000selectmax(b.rowid)from\u8868\u540db\u3000<br \/>\n\u3000\u3000wherea.\u5b57\u6bb51=b.\u5b57\u6bb51and\u3000<br \/>\n\u3000\u3000a.\u5b57\u6bb52=b.\u5b57\u6bb52\u3000<br \/>\n\u3000\u3000)<\/p>\n<p>\u4e8c\u3001\u5b8c\u5168\u522a\u9664\u91cd\u5fa9\u8a18\u9304<br \/>\n\u5c0d\u65bc\u8868\u4e2d\u5169\u884c\u8a18\u9304\u5b8c\u5168\u58f9\u6a23\u7684\u60c5\u6cc1\uff0c\u53ef\u4ee5\u7528\u4e0b\u9762\u8a9e\u53e5\u7372\u53d6\u5230\u53bb\u6389\u91cd\u5fa9\u6578\u64da\u5f8c\u7684\u8a18\u9304\uff1a<br \/>\nselect distinct * from \u8868\u540d<br \/>\n\u53ef\u4ee5\u5c07\u67e5\u8a62\u7684\u8a18\u9304\u653e\u5230\u66ab\u6642\u8868\u4e2d\uff0c\u7136\u5f8c\u518d\u5c07\u539f\u4f86\u7684\u8868\u8a18\u9304\u522a\u9664\uff0c\u6700\u521d\u5c07\u66ab\u6642\u8868\u7684\u6578\u64da\u5c0e\u56de\u539f\u4f86\u7684\u8868\u4e2d\u3002\u5982\u4e0b\uff1a<br \/>\ncreateTABLE\u66ab\u6642\u8868AS(selectdistinct*from\u8868\u540d);<br \/>\ntruncatetable\u6b63\u5f0f\u8868;&#8211;\u8a3b\uff1a\u539f\u5148\u7531\u65bc\u7b46\u8aa4\u5beb\u6210\u4e86droptable\u6b63\u5f0f\u8868;\uff0c\u73fe\u5728\u5df2\u7d93\u6539\u6b63\u904e\u4f86<br \/>\ninsertinto\u6b63\u5f0f\u8868(select*from\u66ab\u6642\u8868);<br \/>\ndroptable\u66ab\u6642\u8868;<\/p>\n<p>\u5047\u5982\u60f3\u522a\u9664\u58f9\u500b\u8868\u7684\u91cd\u5fa9\u6578\u64da\uff0c\u53ef\u4ee5\u5148\u5efa\u58f9\u500b\u66ab\u6642\u8868\uff0c\u5c07\u53bb\u6389\u91cd\u5fa9\u6578\u64da\u5f8c\u7684\u6578\u64da\u5c0e\u5165\u5230\u66ab\u6642\u8868\uff0c\u7136\u5f8c\u5728\u5f9e\u66ab\u6642\u8868\u5c07\u6578\u64da\u5c0e\u5165\u6b63\u5f0f\u8868\u4e2d\uff0c\u5982\u4e0b\uff1a<br \/>\ninsertINTOt_table_bak\u3000<br \/>\nselectdistinct*fromt_table;<\/p>\n<p>\u4e09\u3001\u600e\u6a23\u5feb\u901f\u522a\u9664oracle\u6578\u64da\u5eab<br \/>\n\u6700\u5feb\u7684\u65b9\u6cd5\u5c31\u9032\u5165\u8a3b\u518a\u8868 \u5728\u904b\u884c..\u88cf\u8f38\u5165regedit.<br \/>\n\u4f9d\u6b21\u5c55\u958bHKEY_LOCAL_MACHINE SOFTWARE<br \/>\n\u627e\u5230ORACLE\u7bc0\u9ede\u3002\u522a\u9664\u3002<br \/>\n\u7136\u5f8c\u522a\u9664ORACLE\u6578\u64da\u6587\u4ef6\uff0c\u5b89\u88dd\u7684\u6642\u5019\u9078\u7684\u8def\u5f91\u3002<br \/>\n\u6700\u521d\u522a\u9664oracle\u5f15\u5c0e\u6587\u4ef6\uff0c\u5728\u7cfb\u7d71\u76e4\u7b26\u7684Program Files \u88cf\u9762\u522a\u9664oracle\u6587\u4ef6\u593e\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u5c0d\u6578\u64da\u5eab\u9032\u884c\u64cd\u4f5c\u904e\u7a0b\u4e2d\u6211\u5011\u53ef\u80fd\u6703\u78b0\u5230\u9019\u7a2e\u60c5\u6cc1\uff0c\u8868\u4e2d\u7684\u6578\u64da\u53ef\u80fd\u91cd\u5fa9\u51fa\u73fe\uff0c\u4f7f\u6211\u5011\u5c0d\u6578\u64da\u5eab\u7684\u64cd\u4f5c\u904e\u7a0b\u4e2d\u5e36\u4f86\u5f88\u591a\u7684\u4e0d [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[204,94,2748],"class_list":["post-889","post","type-post","status-publish","format-standard","hentry","category-oracle","tag-10gdba","tag-dba","tag-oracle"],"_links":{"self":[{"href":"https:\/\/www.killtest.hk\/index.php\/wp-json\/wp\/v2\/posts\/889","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.killtest.hk\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.killtest.hk\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.killtest.hk\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.killtest.hk\/index.php\/wp-json\/wp\/v2\/comments?post=889"}],"version-history":[{"count":0,"href":"https:\/\/www.killtest.hk\/index.php\/wp-json\/wp\/v2\/posts\/889\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.killtest.hk\/index.php\/wp-json\/wp\/v2\/media?parent=889"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.killtest.hk\/index.php\/wp-json\/wp\/v2\/categories?post=889"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.killtest.hk\/index.php\/wp-json\/wp\/v2\/tags?post=889"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}