{"id":95548,"date":"2024-10-20T01:58:16","date_gmt":"2024-10-19T17:58:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/95548\/"},"modified":"2024-10-20T01:58:16","modified_gmt":"2024-10-19T17:58:16","slug":"oracle%e6%95%b8%e6%93%9a%e5%ba%ab%e6%93%8d%e4%bd%9c%e6%8a%80%e5%b7%a7%ef%bc%9a%e5%bf%ab%e9%80%9f%e5%88%aa%e9%99%a4%e6%8c%87%e5%ae%9a%e8%a8%98%e9%8c%84-oracle-%e5%88%aa%e9%99%a4%e6%8c%87%e5%ae%9a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/95548\/","title":{"rendered":"Oracle\u6578\u64da\u5eab\u64cd\u4f5c\u6280\u5de7\uff1a\u5feb\u901f\u522a\u9664\u6307\u5b9a\u8a18\u9304 (oracle \u522a\u9664\u6307\u5b9a\u689d\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"oracle%e6%95%b8%e6%93%9a%e5%ba%ab%e6%93%8d%e4%bd%9c%e6%8a%80%e5%b7%a7%ef%bc%9a%e5%bf%ab%e9%80%9f%e5%88%aa%e9%99%a4%e6%8c%87%e5%ae%9a%e8%a8%98%e9%8c%84-pOtaPNRDFA\">Oracle\u6578\u64da\u5eab\u64cd\u4f5c\u6280\u5de7\uff1a\u5feb\u901f\u522a\u9664\u6307\u5b9a\u8a18\u9304<\/h1>\n<p>\u5728\u65e5\u5e38\u7684\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u522a\u9664\u4e0d\u5fc5\u8981\u7684\u8a18\u9304\u662f\u4e00\u9805\u5e38\u898b\u7684\u4efb\u52d9\u3002Oracle\u6578\u64da\u5eab\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u522a\u9664\u6307\u5b9a\u7684\u8a18\u9304\uff0c\u9019\u4e0d\u50c5\u80fd\u5920\u5e6b\u52a9\u6211\u5011\u4fdd\u6301\u6578\u64da\u7684\u6574\u6f54\uff0c\u9084\u80fd\u63d0\u9ad8\u67e5\u8a62\u7684\u6548\u7387\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u4e00\u4e9b\u5728Oracle\u6578\u64da\u5eab\u4e2d\u5feb\u901f\u522a\u9664\u6307\u5b9a\u8a18\u9304\u7684\u6280\u5de7\u3002<\/p>\n<h2 id=\"%e5%9f%ba%e6%9c%ac%e5%88%aa%e9%99%a4%e8%aa%9e%e6%b3%95-pOtaPNRDFA\">\u57fa\u672c\u522a\u9664\u8a9e\u6cd5<\/h2>\n<p>\u5728Oracle\u4e2d\uff0c\u522a\u9664\u8a18\u9304\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>DELETE FROM \u8868\u540d WHERE \u689d\u4ef6;<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u6703\u6839\u64da\u6307\u5b9a\u7684\u689d\u4ef6\u522a\u9664\u7b26\u5408\u689d\u4ef6\u7684\u6240\u6709\u8a18\u9304\u3002\u4f8b\u5982\uff0c\u5982\u679c\u6211\u5011\u60f3\u8981\u522a\u9664\u540d\u70ba\u201cemployees\u201d\u7684\u8868\u4e2d\u6240\u6709\u5e74\u9f61\u5927\u65bc60\u7684\u54e1\u5de5\u8a18\u9304\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n<pre><code>DELETE FROM employees WHERE age &gt; 60;<\/code><\/pre>\n<h2 id=\"%e4%bd%bf%e7%94%a8rownum%e9%99%90%e5%88%b6%e5%88%aa%e9%99%a4%e7%9a%84%e8%a8%98%e9%8c%84%e6%95%b8%e9%87%8f-pOtaPNRDFA\">\u4f7f\u7528ROWNUM\u9650\u5236\u522a\u9664\u7684\u8a18\u9304\u6578\u91cf<\/h2>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u6211\u5011\u53ef\u80fd\u53ea\u60f3\u522a\u9664\u7279\u5b9a\u6578\u91cf\u7684\u8a18\u9304\u3002Oracle\u63d0\u4f9b\u4e86ROWNUM\u4f86\u9650\u5236\u522a\u9664\u7684\u8a18\u9304\u6578\u91cf\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u522a\u9664\u201cemployees\u201d\u8868\u4e2d\u5e74\u9f61\u5927\u65bc60\u7684\u524d10\u689d\u8a18\u9304\uff1a<\/p>\n<pre><code>DELETE FROM employees WHERE age &gt; 60 AND ROWNUM &lt;= 10;<\/code><\/pre>\n<p>\u9019\u6a23\u7684\u8a9e\u53e5\u53ef\u4ee5\u6709\u6548\u5730\u63a7\u5236\u522a\u9664\u7684\u8a18\u9304\u6578\u91cf\uff0c\u907f\u514d\u4e00\u6b21\u6027\u522a\u9664\u904e\u591a\u7684\u6578\u64da\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8cte%ef%bc%88%e5%85%ac%e7%94%a8%e8%a1%a8%e8%a1%a8%e9%81%94%e5%bc%8f%ef%bc%89%e9%80%b2%e8%a1%8c%e6%89%b9%e9%87%8f%e5%88%aa%e9%99%a4-pOtaPNRDFA\">\u4f7f\u7528CTE\uff08\u516c\u7528\u8868\u8868\u9054\u5f0f\uff09\u9032\u884c\u6279\u91cf\u522a\u9664<\/h2>\n<p>\u5982\u679c\u9700\u8981\u522a\u9664\u7684\u8a18\u9304\u6578\u91cf\u8f03\u5927\uff0c\u4f7f\u7528CTE\u53ef\u4ee5\u4f7f\u64cd\u4f5c\u66f4\u52a0\u9748\u6d3b\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528CTE\u522a\u9664\u201cemployees\u201d\u8868\u4e2d\u5e74\u9f61\u5927\u65bc60\u7684\u6240\u6709\u8a18\u9304\uff1a<\/p>\n<pre><code>WITH records_to_delete AS (\n    SELECT * FROM employees WHERE age &gt; 60\n)\nDELETE FROM records_to_delete;<\/code><\/pre>\n<p>\u9019\u7a2e\u65b9\u6cd5\u4e0d\u50c5\u80fd\u5920\u63d0\u9ad8\u53ef\u8b80\u6027\uff0c\u9084\u80fd\u5728\u522a\u9664\u4e4b\u524d\u9032\u884c\u66f4\u8907\u96dc\u7684\u67e5\u8a62\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8transaction%e9%80%b2%e8%a1%8c%e5%ae%89%e5%85%a8%e5%88%aa%e9%99%a4-pOtaPNRDFA\">\u4f7f\u7528TRANSACTION\u9032\u884c\u5b89\u5168\u522a\u9664<\/h2>\n<p>\u5728\u9032\u884c\u522a\u9664\u64cd\u4f5c\u6642\uff0c\u4f7f\u7528TRANSACTION\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u5b89\u5168\u6027\u3002\u9019\u6a23\u53ef\u4ee5\u5728\u522a\u9664\u5f8c\u9032\u884c\u56de\u6efe\u64cd\u4f5c\uff0c\u4ee5\u9632\u6b62\u610f\u5916\u522a\u9664\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n<pre><code>BEGIN\n    DELETE FROM employees WHERE age &gt; 60;\n    COMMIT; -- \u63d0\u4ea4\u66f4\u6539\nEXCEPTION\n    WHEN OTHERS THEN\n        ROLLBACK; -- \u56de\u6efe\u66f4\u6539\nEND;<\/code><\/pre>\n<p>\u9019\u6a23\u7684\u64cd\u4f5c\u53ef\u4ee5\u6709\u6548\u5730\u4fdd\u8b77\u6578\u64da\uff0c\u907f\u514d\u56e0\u70ba\u64cd\u4f5c\u5931\u8aa4\u800c\u5c0e\u81f4\u7684\u6578\u64da\u4e1f\u5931\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-pOtaPNRDFA\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li>\u5728\u57f7\u884c\u522a\u9664\u64cd\u4f5c\u4e4b\u524d\uff0c\u5efa\u8b70\u5148\u9032\u884c\u6578\u64da\u5099\u4efd\uff0c\u4ee5\u9632\u6b62\u610f\u5916\u522a\u9664\u91cd\u8981\u6578\u64da\u3002<\/li>\n<li>\u4f7f\u7528WHERE\u689d\u4ef6\u6642\uff0c\u52d9\u5fc5\u8b39\u614e\uff0c\u4ee5\u514d\u522a\u9664\u4e0d\u61c9\u8a72\u522a\u9664\u7684\u8a18\u9304\u3002<\/li>\n<li>\u5728\u522a\u9664\u5927\u91cf\u6578\u64da\u6642\uff0c\u8003\u616e\u4f7f\u7528\u6279\u91cf\u522a\u9664\u7684\u65b9\u6cd5\uff0c\u4ee5\u63d0\u9ad8\u6027\u80fd\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-pOtaPNRDFA\">\u7e3d\u7d50<\/h2>\n<p>\u5728Oracle\u6578\u64da\u5eab\u4e2d\uff0c\u5feb\u901f\u522a\u9664\u6307\u5b9a\u8a18\u9304\u7684\u6280\u5de7\u6709\u52a9\u65bc\u63d0\u9ad8\u6578\u64da\u7ba1\u7406\u7684\u6548\u7387\u3002\u901a\u904e\u4f7f\u7528\u57fa\u672c\u7684DELETE\u8a9e\u6cd5\u3001ROWNUM\u3001CTE\u4ee5\u53caTRANSACTION\u7b49\u65b9\u6cd5\uff0c\u6211\u5011\u53ef\u4ee5\u9748\u6d3b\u5730\u63a7\u5236\u522a\u9664\u64cd\u4f5c\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u5b89\u5168\u6027\u548c\u5b8c\u6574\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u7528\u6236\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\u81f3\u95dc\u91cd\u8981\u3002\u82e5\u60a8\u5c0d\u65bc<code><a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a><\/code>\u6216<code><a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a><\/code>\u6709\u8208\u8da3\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u638c\u63e1Oracle\u6578\u64da\u5eab\u64cd\u4f5c\u6280\u5de7\uff0c\u5b78\u7fd2\u5982\u4f55\u5feb\u901f\u522a\u9664\u6307\u5b9a\u8a18\u9304\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\uff0c\u7c21\u5316\u6578\u64da\u7dad\u8b77\u6d41\u7a0b\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-95548","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95548","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=95548"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95548\/revisions"}],"predecessor-version":[{"id":95549,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95548\/revisions\/95549"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=95548"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=95548"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=95548"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}