{"id":94966,"date":"2024-10-19T21:07:15","date_gmt":"2024-10-19T13:07:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/94966\/"},"modified":"2024-10-19T21:07:16","modified_gmt":"2024-10-19T13:07:16","slug":"oracle%e8%a7%b8%e7%99%bc%e5%99%a8%e7%9a%84%e8%aa%9e%e6%b3%95%e8%a9%b3%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/94966\/","title":{"rendered":"Oracle\u89f8\u767c\u5668\u7684\u8a9e\u6cd5\u8a73\u89e3"},"content":{"rendered":"<h1 id=\"oracle%e8%a7%b8%e7%99%bc%e5%99%a8%e7%9a%84%e8%aa%9e%e6%b3%95%e8%a9%b3%e8%a7%a3-MwkWFelQRb\">Oracle\u89f8\u767c\u5668\u7684\u8a9e\u6cd5\u8a73\u89e3<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u89f8\u767c\u5668\uff08Trigger\uff09\u662f\u4e00\u7a2e\u7279\u6b8a\u7684\u5132\u5b58\u7a0b\u5e8f\uff0c\u5b83\u6703\u5728\u7279\u5b9a\u4e8b\u4ef6\u767c\u751f\u6642\u81ea\u52d5\u57f7\u884c\u3002Oracle\u8cc7\u6599\u5eab\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u89f8\u767c\u5668\u529f\u80fd\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u5728\u8cc7\u6599\u5eab\u64cd\u4f5c\u4e2d\u81ea\u52d5\u5316\u67d0\u4e9b\u4efb\u52d9\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eOracle\u89f8\u767c\u5668\u7684\u8a9e\u6cd5\u53ca\u5176\u4f7f\u7528\u65b9\u6cd5\u3002<\/p>\n<h2 id=\"%e8%a7%b8%e7%99%bc%e5%99%a8%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-MwkWFelQRb\">\u89f8\u767c\u5668\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u89f8\u767c\u5668\u662f\u4e00\u7a2e\u8207\u8cc7\u6599\u8868\u95dc\u806f\u7684\u7a0b\u5e8f\uff0c\u7576\u5c0d\u8a72\u8cc7\u6599\u8868\u9032\u884cINSERT\u3001UPDATE\u6216DELETE\u64cd\u4f5c\u6642\uff0c\u89f8\u767c\u5668\u6703\u81ea\u52d5\u57f7\u884c\u3002\u9019\u4f7f\u5f97\u89f8\u767c\u5668\u5728\u8cc7\u6599\u5b8c\u6574\u6027\u3001\u5be9\u8a08\u548c\u81ea\u52d5\u5316\u4efb\u52d9\u4e2d\u975e\u5e38\u6709\u7528\u3002<\/p>\n<h2 id=\"%e8%a7%b8%e7%99%bc%e5%99%a8%e7%9a%84%e8%aa%9e%e6%b3%95-MwkWFelQRb\">\u89f8\u767c\u5668\u7684\u8a9e\u6cd5<\/h2>\n<p>\u5728Oracle\u4e2d\uff0c\u5275\u5efa\u89f8\u767c\u5668\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>CREATE [OR REPLACE] TRIGGER trigger_name\n{BEFORE | AFTER | INSTEAD OF} \n{INSERT | UPDATE | DELETE} \nON table_name\n[FOR EACH ROW]\nDECLARE\n   -- \u8b8a\u6578\u5ba3\u544a\u5340\nBEGIN\n   -- \u89f8\u767c\u5668\u908f\u8f2f\nEND;<\/code><\/pre>\n<h3 id=\"%e8%aa%9e%e6%b3%95%e8%a9%b3%e8%a7%a3-MwkWFelQRb\">\u8a9e\u6cd5\u8a73\u89e3<\/h3>\n<ul>\n<li><strong>CREATE [OR REPLACE] TRIGGER trigger_name<\/strong>: \u7528\u65bc\u5275\u5efa\u4e00\u500b\u65b0\u7684\u89f8\u767c\u5668\uff0c\u6216\u66ff\u63db\u5df2\u5b58\u5728\u7684\u89f8\u767c\u5668\u3002<\/li>\n<li><strong>BEFORE | AFTER | INSTEAD OF<\/strong>: \u6307\u5b9a\u89f8\u767c\u5668\u7684\u57f7\u884c\u6642\u6a5f\u3002BEFORE\u8868\u793a\u5728\u64cd\u4f5c\u4e4b\u524d\u57f7\u884c\uff0cAFTER\u8868\u793a\u5728\u64cd\u4f5c\u4e4b\u5f8c\u57f7\u884c\uff0cINSTEAD OF\u5247\u7528\u65bc\u8996\u5716\uff0c\u8868\u793a\u5728\u57f7\u884c\u64cd\u4f5c\u6642\u66ff\u4ee3\u539f\u6709\u64cd\u4f5c\u3002<\/li>\n<li><strong>INSERT | UPDATE | DELETE<\/strong>: \u6307\u5b9a\u89f8\u767c\u5668\u97ff\u61c9\u7684\u64cd\u4f5c\u985e\u578b\u3002<\/li>\n<li><strong>ON table_name<\/strong>: \u6307\u5b9a\u89f8\u767c\u5668\u6240\u95dc\u806f\u7684\u8cc7\u6599\u8868\u3002<\/li>\n<li><strong>[FOR EACH ROW]<\/strong>: \u53ef\u9078\u9805\uff0c\u8868\u793a\u89f8\u767c\u5668\u5c07\u5c0d\u6bcf\u4e00\u884c\u8cc7\u6599\u57f7\u884c\u3002<\/li>\n<li><strong>DECLARE<\/strong>: \u7528\u65bc\u5ba3\u544a\u8b8a\u6578\u3002<\/li>\n<li><strong>BEGIN &#8230; END;<\/strong>: \u89f8\u767c\u5668\u7684\u4e3b\u9ad4\uff0c\u5305\u542b\u8981\u57f7\u884c\u7684\u908f\u8f2f\u3002<\/li>\n<\/ul>\n<h2 id=\"%e8%a7%b8%e7%99%bc%e5%99%a8%e7%9a%84%e7%af%84%e4%be%8b-MwkWFelQRb\">\u89f8\u767c\u5668\u7684\u7bc4\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u89f8\u767c\u5668\u7bc4\u4f8b\uff0c\u7576\u5c0d\u67d0\u500b\u54e1\u5de5\u8cc7\u6599\u8868\u9032\u884c\u63d2\u5165\u64cd\u4f5c\u6642\uff0c\u81ea\u52d5\u8a18\u9304\u63d2\u5165\u7684\u6642\u9593\uff1a<\/p>\n<pre><code>CREATE OR REPLACE TRIGGER trg_insert_employee\nAFTER INSERT ON employees\nFOR EACH ROW\nBEGIN\n   INSERT INTO audit_log (action, log_time)\n   VALUES ('INSERT', SYSDATE);\nEND;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u7576\u6709\u65b0\u54e1\u5de5\u88ab\u63d2\u5165\u5230employees\u8cc7\u6599\u8868\u6642\uff0c\u89f8\u767c\u5668\u6703\u81ea\u52d5\u5728audit_log\u8cc7\u6599\u8868\u4e2d\u8a18\u9304\u4e0b\u63d2\u5165\u7684\u6642\u9593\u3002<\/p>\n<h2 id=\"%e8%a7%b8%e7%99%bc%e5%99%a8%e7%9a%84%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-MwkWFelQRb\">\u89f8\u767c\u5668\u7684\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li>\u89f8\u767c\u5668\u53ef\u80fd\u6703\u5f71\u97ff\u6027\u80fd\uff0c\u7279\u5225\u662f\u5728\u5927\u91cf\u8cc7\u6599\u64cd\u4f5c\u6642\uff0c\u56e0\u6b64\u61c9\u8b39\u614e\u4f7f\u7528\u3002<\/li>\n<li>\u907f\u514d\u5728\u89f8\u767c\u5668\u4e2d\u57f7\u884c\u904e\u65bc\u8907\u96dc\u7684\u908f\u8f2f\uff0c\u4ee5\u514d\u5c0e\u81f4\u96e3\u4ee5\u7dad\u8b77\u7684\u4ee3\u78bc\u3002<\/li>\n<li>\u89f8\u767c\u5668\u7684\u57f7\u884c\u9806\u5e8f\u53ef\u80fd\u6703\u5f71\u97ff\u7d50\u679c\uff0c\u7279\u5225\u662f\u5728\u591a\u500b\u89f8\u767c\u5668\u91dd\u5c0d\u540c\u4e00\u4e8b\u4ef6\u6642\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-MwkWFelQRb\">\u7e3d\u7d50<\/h2>\n<p>Oracle\u89f8\u767c\u5668\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u81ea\u52d5\u5316\u8cc7\u6599\u5eab\u64cd\u4f5c\u4e26\u78ba\u4fdd\u8cc7\u6599\u5b8c\u6574\u6027\u3002\u900f\u904e\u6b63\u78ba\u7684\u8a9e\u6cd5\u548c\u7bc4\u4f8b\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u5730\u5229\u7528\u89f8\u767c\u5668\u4f86\u63d0\u5347\u8cc7\u6599\u5eab\u7684\u529f\u80fd\u6027\u548c\u6548\u7387\u3002\u82e5\u60a8\u5c0d\u65bc\u8cc7\u6599\u5eab\u7ba1\u7406\u6709\u9032\u4e00\u6b65\u7684\u9700\u6c42\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u642d\u5efa\u60a8\u7684\u8cc7\u6599\u5eab\u74b0\u5883\uff0c\u4eab\u53d7\u66f4\u9ad8\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5165\u63a2\u8a0eOracle\u89f8\u767c\u5668\u7684\u8a9e\u6cd5\uff0c\u4e86\u89e3\u5982\u4f55\u6709\u6548\u5730\u5275\u5efa\u548c\u7ba1\u7406\u89f8\u767c\u5668\u4ee5\u589e\u5f37\u6578\u64da\u5eab\u529f\u80fd\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-94966","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/94966","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=94966"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/94966\/revisions"}],"predecessor-version":[{"id":94967,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/94966\/revisions\/94967"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=94966"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=94966"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=94966"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}