{"id":96288,"date":"2024-10-20T08:10:17","date_gmt":"2024-10-20T00:10:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/96288\/"},"modified":"2024-10-20T08:10:17","modified_gmt":"2024-10-20T00:10:17","slug":"oracle%e8%87%aa%e5%a2%9e%e5%ad%97%e6%ae%b5%e7%9a%84%e5%89%b5%e5%bb%ba","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/96288\/","title":{"rendered":"Oracle\u81ea\u589e\u5b57\u6bb5\u7684\u5275\u5efa"},"content":{"rendered":"

Oracle\u81ea\u589e\u5b57\u6bb5\u7684\u5275\u5efa<\/h1>\n

\u5728\u8cc7\u6599\u5eab\u8a2d\u8a08\u4e2d\uff0c\u81ea\u589e\u5b57\u6bb5\u662f\u4e00\u500b\u975e\u5e38\u91cd\u8981\u7684\u6982\u5ff5\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u552f\u4e00\u6a19\u8b58\u6bcf\u4e00\u689d\u8a18\u9304\u7684\u60c5\u6cc1\u4e0b\u3002Oracle\u8cc7\u6599\u5eab\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u5275\u5efa\u81ea\u589e\u5b57\u6bb5\uff0c\u672c\u6587\u5c07\u8a73\u7d30\u4ecb\u7d39\u5982\u4f55\u5728Oracle\u4e2d\u5275\u5efa\u81ea\u589e\u5b57\u6bb5\uff0c\u5305\u62ec\u4f7f\u7528\u5e8f\u5217\u548c\u89f8\u767c\u5668\u7684\u65b9\u6cd5\u3002<\/p>\n

\u81ea\u589e\u5b57\u6bb5\u7684\u6982\u5ff5<\/h2>\n

\u81ea\u589e\u5b57\u6bb5\u901a\u5e38\u7528\u65bc\u4e3b\u9375\uff0c\u78ba\u4fdd\u6bcf\u4e00\u689d\u8a18\u9304\u90fd\u6709\u4e00\u500b\u552f\u4e00\u7684\u6a19\u8b58\u7b26\u3002\u5728Oracle\u4e2d\uff0c\u50b3\u7d71\u4e0a\u4e26\u4e0d\u652f\u6301\u76f4\u63a5\u5728\u8868\u4e2d\u5b9a\u7fa9\u81ea\u589e\u5b57\u6bb5\uff0c\u56e0\u6b64\u9700\u8981\u4f7f\u7528\u5e8f\u5217\uff08Sequence\uff09\u548c\u89f8\u767c\u5668\uff08Trigger\uff09\u4f86\u5be6\u73fe\u9019\u4e00\u529f\u80fd\u3002<\/p>\n

\u4f7f\u7528\u5e8f\u5217\u5275\u5efa\u81ea\u589e\u5b57\u6bb5<\/h2>\n

\u5e8f\u5217\u662f\u4e00\u7a2e\u6578\u64da\u5eab\u5c0d\u8c61\uff0c\u7528\u65bc\u751f\u6210\u552f\u4e00\u7684\u6578\u5b57\u3002\u4ee5\u4e0b\u662f\u5275\u5efa\u5e8f\u5217\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n

CREATE SEQUENCE seq_example\nSTART WITH 1\nINCREMENT BY 1\nNOCACHE;\n<\/code><\/pre>\n
\u4e0a\u8ff0\u4ee3\u78bc\u5275\u5efa\u4e86\u4e00\u500b\u540d\u70ba seq_example<\/code> \u7684\u5e8f\u5217\uff0c\u5f9e1\u958b\u59cb\uff0c\u6bcf\u6b21\u589e\u52a01\u3002\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u9700\u8981\u5275\u5efa\u4e00\u500b\u8868\uff0c\u4e26\u5728\u63d2\u5165\u6578\u64da\u6642\u4f7f\u7528\u9019\u500b\u5e8f\u5217\u3002<\/p>\n
CREATE TABLE example_table (\n    id NUMBER PRIMARY KEY,\n    name VARCHAR2(50)\n);\n<\/code><\/pre>\n
\u5728\u63d2\u5165\u6578\u64da\u6642\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u5e8f\u5217\u4f86\u751f\u6210\u81ea\u589e\u7684ID\uff1a<\/p>\n
INSERT INTO example_table (id, name)\nVALUES (seq_example.NEXTVAL, 'Alice');\n<\/code><\/pre>\n
\u9019\u6a23\uff0c\u6bcf\u6b21\u63d2\u5165\u65b0\u8a18\u9304\u6642\uff0cid<\/code> \u5b57\u6bb5\u90fd\u6703\u81ea\u52d5\u7372\u53d6\u4e00\u500b\u552f\u4e00\u7684\u503c\u3002<\/p>\n
\u4f7f\u7528\u89f8\u767c\u5668\u5275\u5efa\u81ea\u589e\u5b57\u6bb5<\/h2>\n
\u9664\u4e86\u4f7f\u7528\u5e8f\u5217\uff0c\u6211\u5011\u9084\u53ef\u4ee5\u901a\u904e\u89f8\u767c\u5668\u4f86\u5be6\u73fe\u81ea\u589e\u5b57\u6bb5\u7684\u529f\u80fd\u3002\u89f8\u767c\u5668\u662f\u4e00\u7a2e\u7279\u6b8a\u7684\u5b58\u5132\u904e\u7a0b\uff0c\u6703\u5728\u7279\u5b9a\u4e8b\u4ef6\u767c\u751f\u6642\u81ea\u52d5\u57f7\u884c\u3002\u4ee5\u4e0b\u662f\u5275\u5efa\u89f8\u767c\u5668\u7684\u6b65\u9a5f\uff1a<\/p>\n
CREATE OR REPLACE TRIGGER trg_example\nBEFORE INSERT ON example_table\nFOR EACH ROW\nBEGIN\n    :new.id := seq_example.NEXTVAL;\nEND;\n<\/code><\/pre>\n
\u9019\u500b\u89f8\u767c\u5668\u6703\u5728\u6bcf\u6b21\u63d2\u5165 example_table<\/code> \u8868\u6642\u81ea\u52d5\u70ba id<\/code> \u5b57\u6bb5\u8ce6\u503c\u3002\u9019\u6a23\uff0c\u4f7f\u7528\u8005\u5728\u63d2\u5165\u6578\u64da\u6642\u5c31\u4e0d\u9700\u8981\u624b\u52d5\u6307\u5b9a id<\/code> \u7684\u503c\u4e86\u3002<\/p>\n
\u793a\u4f8b\u7e3d\u7d50<\/h2>\n
\u7e3d\u7d50\u4f86\u8aaa\uff0cOracle\u8cc7\u6599\u5eab\u4e2d\u81ea\u589e\u5b57\u6bb5\u7684\u5275\u5efa\u4e3b\u8981\u4f9d\u8cf4\u65bc\u5e8f\u5217\u548c\u89f8\u767c\u5668\u3002\u9019\u5169\u7a2e\u65b9\u6cd5\u5404\u6709\u512a\u7f3a\u9ede\uff0c\u4f7f\u7528\u8005\u53ef\u4ee5\u6839\u64da\u5177\u9ad4\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u65b9\u5f0f\u3002\u5e8f\u5217\u65b9\u6cd5\u8f03\u70ba\u7c21\u55ae\u76f4\u63a5\uff0c\u800c\u89f8\u767c\u5668\u5247\u63d0\u4f9b\u4e86\u66f4\u9ad8\u7684\u9748\u6d3b\u6027\u548c\u81ea\u52d5\u5316\u3002<\/p>\n
\u7d50\u8ad6<\/h2>\n
\u5728\u8a2d\u8a08\u8cc7\u6599\u5eab\u6642\uff0c\u5408\u7406\u4f7f\u7528\u81ea\u589e\u5b57\u6bb5\u53ef\u4ee5\u63d0\u9ad8\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u3002\u7121\u8ad6\u662f\u4f7f\u7528\u5e8f\u5217\u9084\u662f\u89f8\u767c\u5668\uff0c\u4e86\u89e3\u5176\u5de5\u4f5c\u539f\u7406\u548c\u4f7f\u7528\u65b9\u6cd5\u90fd\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u7ba1\u7406\u6578\u64da\u7684\u4f01\u696d\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684\u8cc7\u6599\u5eab\u89e3\u6c7a\u65b9\u6848\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n
\u5982\u679c\u60a8\u5c0d\u65bc \u9999\u6e2fVPS<\/a> \u670d\u52d9\u6709\u8208\u8da3\uff0c\u6216\u60f3\u4e86\u89e3\u66f4\u591a\u95dc\u65bc \u4f3a\u670d\u5668<\/a> \u7684\u8cc7\u8a0a\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8a73\u7d30\u8cc7\u6599\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5b78\u7fd2\u5982\u4f55\u5728Oracle\u4e2d\u5275\u5efa\u81ea\u589e\u5b57\u6bb5\uff0c\u7c21\u5316\u6578\u64da\u63d2\u5165\u904e\u7a0b\uff0c\u63d0\u5347\u6578\u64da\u5eab\u7ba1\u7406\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-96288","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96288","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=96288"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96288\/revisions"}],"predecessor-version":[{"id":96289,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96288\/revisions\/96289"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=96288"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=96288"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=96288"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}