{"id":95772,"date":"2024-10-20T03:52:22","date_gmt":"2024-10-19T19:52:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/95772\/"},"modified":"2024-10-20T03:52:22","modified_gmt":"2024-10-19T19:52:22","slug":"oracle%e6%95%b8%e6%93%9a%e5%ba%ab%e5%a6%82%e4%bd%95%e5%89%b5%e5%bb%ba%e8%99%9b%e6%93%ac%e5%88%97%e5%92%8c%e8%a4%87%e5%90%88%e8%a7%b8%e7%99%bc%e5%99%a8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/95772\/","title":{"rendered":"Oracle\u6578\u64da\u5eab\u5982\u4f55\u5275\u5efa\u865b\u64ec\u5217\u548c\u8907\u5408\u89f8\u767c\u5668"},"content":{"rendered":"

Oracle\u6578\u64da\u5eab\u5982\u4f55\u5275\u5efa\u865b\u64ec\u5217\u548c\u8907\u5408\u89f8\u767c\u5668<\/h1>\n

\u5728Oracle\u6578\u64da\u5eab\u4e2d\uff0c\u865b\u64ec\u5217\u548c\u8907\u5408\u89f8\u767c\u5668\u662f\u5169\u500b\u5f37\u5927\u7684\u529f\u80fd\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u548c\u81ea\u52d5\u5316\u64cd\u4f5c\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u5275\u5efa\u865b\u64ec\u5217\u548c\u8907\u5408\u89f8\u767c\u5668\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n

\u865b\u64ec\u5217\u7684\u6982\u5ff5<\/h2>\n

\u865b\u64ec\u5217\u662f\u4e00\u7a2e\u4e0d\u5be6\u969b\u5b58\u5132\u6578\u64da\u7684\u5217\uff0c\u800c\u662f\u6839\u64da\u5176\u4ed6\u5217\u7684\u503c\u52d5\u614b\u8a08\u7b97\u5f97\u51fa\u7684\u3002\u9019\u7a2e\u7279\u6027\u4f7f\u5f97\u865b\u64ec\u5217\u5728\u7bc0\u7701\u5b58\u5132\u7a7a\u9593\u7684\u540c\u6642\uff0c\u4ecd\u7136\u80fd\u5920\u63d0\u4f9b\u5fc5\u8981\u7684\u6578\u64da\u8996\u5716\u3002<\/p>\n

\u5275\u5efa\u865b\u64ec\u5217\u7684\u8a9e\u6cd5<\/h3>\n
CREATE TABLE \u8868\u540d (\n    \u52171 \u6578\u64da\u985e\u578b,\n    \u52172 \u6578\u64da\u985e\u578b,\n    \u865b\u64ec\u5217\u540d AS (\u8a08\u7b97\u8868\u9054\u5f0f) VIRTUAL\n);<\/code><\/pre>\n
\u793a\u4f8b<\/h3>\n
\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba\u201c\u54e1\u5de5\u201d\u7684\u8868\uff0c\u5305\u542b\u201c\u57fa\u672c\u5de5\u8cc7\u201d\u548c\u201c\u734e\u91d1\u201d\u5169\u500b\u5217\uff0c\u6211\u5011\u5e0c\u671b\u5275\u5efa\u4e00\u500b\u865b\u64ec\u5217\u201c\u7e3d\u5de5\u8cc7\u201d\uff0c\u5176\u503c\u70ba\u57fa\u672c\u5de5\u8cc7\u548c\u734e\u91d1\u7684\u7e3d\u548c\u3002<\/p>\n
CREATE TABLE \u54e1\u5de5 (\n    \u54e1\u5de5ID NUMBER PRIMARY KEY,\n    \u57fa\u672c\u5de5\u8cc7 NUMBER,\n    \u734e\u91d1 NUMBER,\n    \u7e3d\u5de5\u8cc7 AS (\u57fa\u672c\u5de5\u8cc7 + \u734e\u91d1) VIRTUAL\n);<\/code><\/pre>\n
\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u865b\u64ec\u5217\u201c\u7e3d\u5de5\u8cc7\u201d\u4e0d\u6703\u4f54\u7528\u984d\u5916\u7684\u5b58\u5132\u7a7a\u9593\uff0c\u800c\u662f\u6839\u64da\u201c\u57fa\u672c\u5de5\u8cc7\u201d\u548c\u201c\u734e\u91d1\u201d\u7684\u503c\u52d5\u614b\u8a08\u7b97\u3002<\/p>\n
\u8907\u5408\u89f8\u767c\u5668\u7684\u6982\u5ff5<\/h2>\n
\u8907\u5408\u89f8\u767c\u5668\u662f\u4e00\u7a2e\u7279\u6b8a\u985e\u578b\u7684\u89f8\u767c\u5668\uff0c\u5141\u8a31\u5728\u540c\u4e00\u89f8\u767c\u5668\u4e2d\u5b9a\u7fa9\u591a\u500b\u4e8b\u4ef6\uff08\u5982INSERT\u3001UPDATE\u548cDELETE\uff09\u3002\u9019\u4f7f\u5f97\u958b\u767c\u8005\u80fd\u5920\u5728\u4e00\u500b\u89f8\u767c\u5668\u4e2d\u8655\u7406\u591a\u7a2e\u64cd\u4f5c\uff0c\u5f9e\u800c\u7c21\u5316\u4ee3\u78bc\u548c\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n
\u5275\u5efa\u8907\u5408\u89f8\u767c\u5668\u7684\u8a9e\u6cd5<\/h3>\n
CREATE OR REPLACE TRIGGER \u89f8\u767c\u5668\u540d\nFOR INSERT OR UPDATE OR DELETE ON \u8868\u540d\nCOMPOUND TRIGGER\n    -- \u5b9a\u7fa9\u8b8a\u91cf\n    \u8b8a\u91cf\u540d1;\n    \u8b8a\u91cf\u540d2;\n\n    BEFORE EACH ROW IS\n    BEGIN\n        -- \u5728\u6bcf\u884c\u4e4b\u524d\u57f7\u884c\u7684\u4ee3\u78bc\n    END BEFORE EACH ROW;\n\n    AFTER EACH ROW IS\n    BEGIN\n        -- \u5728\u6bcf\u884c\u4e4b\u5f8c\u57f7\u884c\u7684\u4ee3\u78bc\n    END AFTER EACH ROW;\n\n    AFTER STATEMENT IS\n    BEGIN\n        -- \u5728\u8a9e\u53e5\u7d50\u675f\u5f8c\u57f7\u884c\u7684\u4ee3\u78bc\n    END AFTER STATEMENT;\nEND \u89f8\u767c\u5668\u540d; <\/code><\/pre>\n
\u793a\u4f8b<\/h3>\n
\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba\u201c\u8a02\u55ae\u201d\u7684\u8868\uff0c\u6211\u5011\u5e0c\u671b\u5728\u63d2\u5165\u3001\u66f4\u65b0\u6216\u522a\u9664\u8a02\u55ae\u6642\uff0c\u8a18\u9304\u64cd\u4f5c\u7684\u6642\u9593\u548c\u7528\u6236\u3002<\/p>\n
CREATE OR REPLACE TRIGGER \u8a02\u55ae\u89f8\u767c\u5668\nFOR INSERT OR UPDATE OR DELETE ON \u8a02\u55ae\nCOMPOUND TRIGGER\n    v_time TIMESTAMP;\n\n    BEFORE EACH ROW IS\n    BEGIN\n        v_time := SYSTIMESTAMP;\n    END BEFORE EACH ROW;\n\n    AFTER EACH ROW IS\n    BEGIN\n        INSERT INTO \u8a02\u55ae\u65e5\u8a8c (\u8a02\u55aeID, \u64cd\u4f5c\u6642\u9593, \u64cd\u4f5c\u985e\u578b)\n        VALUES (:OLD.\u8a02\u55aeID, v_time, CASE\n            WHEN INSERTING THEN 'INSERT'\n            WHEN UPDATING THEN 'UPDATE'\n            WHEN DELETING THEN 'DELETE'\n        END);\n    END AFTER EACH ROW;\n\n    AFTER STATEMENT IS\n    BEGIN\n        -- \u53ef\u4ee5\u5728\u9019\u88e1\u57f7\u884c\u5176\u4ed6\u64cd\u4f5c\n    END AFTER STATEMENT;\nEND \u8a02\u55ae\u89f8\u767c\u5668;<\/code><\/pre>\n
\u7e3d\u7d50<\/h2>\n
\u865b\u64ec\u5217\u548c\u8907\u5408\u89f8\u767c\u5668\u662fOracle\u6578\u64da\u5eab\u4e2d\u975e\u5e38\u6709\u7528\u7684\u529f\u80fd\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u9ad8\u6548\u5730\u7ba1\u7406\u6578\u64da\u548c\u81ea\u52d5\u5316\u64cd\u4f5c\u3002\u901a\u904e\u4f7f\u7528\u865b\u64ec\u5217\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u7bc0\u7701\u5b58\u5132\u7a7a\u9593\uff0c\u800c\u8907\u5408\u89f8\u767c\u5668\u5247\u80fd\u7c21\u5316\u4ee3\u78bc\u7d50\u69cb\uff0c\u63d0\u5347\u6027\u80fd\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u61c9\u7528\u5834\u666f\uff0c\u9019\u4e9b\u529f\u80fd\u7121\u7591\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u5ba2\u6236\u3002\u7121\u8ad6\u662f \u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u53ef\u9760\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e86\u89e3\u5982\u4f55\u5728Oracle\u6578\u64da\u5eab\u4e2d\u5275\u5efa\u865b\u64ec\u5217\u548c\u8907\u5408\u89f8\u767c\u5668\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u548c\u81ea\u52d5\u5316\u6548\u7387\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-95772","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95772","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=95772"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95772\/revisions"}],"predecessor-version":[{"id":95773,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95772\/revisions\/95773"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=95772"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=95772"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=95772"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}