{"id":95800,"date":"2024-10-20T04:06:16","date_gmt":"2024-10-19T20:06:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/95800\/"},"modified":"2024-10-20T04:06:17","modified_gmt":"2024-10-19T20:06:17","slug":"oracle%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a8%ad%e8%a8%88%e8%a6%81%e5%81%9a%e5%88%b0%e4%ba%94%e6%88%92","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/95800\/","title":{"rendered":"Oracle\u6578\u64da\u5eab\u8a2d\u8a08\u8981\u505a\u5230\u4e94\u6212"},"content":{"rendered":"

Oracle\u6578\u64da\u5eab\u8a2d\u8a08\u8981\u505a\u5230\u4e94\u6212<\/h1>\n

\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u8a2d\u8a08\u81f3\u95dc\u91cd\u8981\u3002Oracle\u6578\u64da\u5eab\u4f5c\u70ba\u4e00\u500b\u5f37\u5927\u7684\u6578\u64da\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u884c\u5404\u696d\u3002\u70ba\u4e86\u78ba\u4fdd\u6578\u64da\u5eab\u7684\u9ad8\u6548\u904b\u884c\u548c\u53ef\u7dad\u8b77\u6027\uff0c\u8a2d\u8a08\u8005\u9700\u8981\u9075\u5faa\u4e00\u4e9b\u57fa\u672c\u539f\u5247\u3002\u672c\u6587\u5c07\u63a2\u8a0eOracle\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\u61c9\u9075\u5faa\u7684\u4e94\u6212\u3002<\/p>\n

\u4e00\u3001\u6212\u5197\u9918<\/h2>\n

\u5197\u9918\u6578\u64da\u6703\u5c0e\u81f4\u6578\u64da\u4e0d\u4e00\u81f4\u6027\u548c\u5b58\u5132\u7a7a\u9593\u7684\u6d6a\u8cbb\u3002\u5728\u8a2d\u8a08\u6578\u64da\u5eab\u6642\uff0c\u61c9\u8a72\u9075\u5faa\u6b63\u898f\u5316\u7684\u539f\u5247\uff0c\u5c07\u6578\u64da\u5206\u89e3\u70ba\u591a\u500b\u8868\u683c\uff0c\u4e26\u901a\u904e\u5916\u9375\u95dc\u806f\u4f86\u4fdd\u6301\u6578\u64da\u7684\u5b8c\u6574\u6027\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u4e00\u500b\u5305\u542b\u5ba2\u6236\u548c\u8a02\u55ae\u7684\u6578\u64da\u5eab\uff0c\u61c9\u8a72\u5c07\u5ba2\u6236\u4fe1\u606f\u548c\u8a02\u55ae\u4fe1\u606f\u5206\u958b\u5b58\u5132\uff0c\u907f\u514d\u5728\u591a\u500b\u5730\u65b9\u91cd\u8907\u5b58\u5132\u5ba2\u6236\u7684\u8a73\u7d30\u4fe1\u606f\u3002<\/p>\n

CREATE TABLE Customers (\n    CustomerID INT PRIMARY KEY,\n    CustomerName VARCHAR(100),\n    ContactEmail VARCHAR(100)\n);\n\nCREATE TABLE Orders (\n    OrderID INT PRIMARY KEY,\n    CustomerID INT,\n    OrderDate DATE,\n    FOREIGN KEY (CustomerID) REFERENCES Customers(CustomerID)\n);\n<\/code><\/pre>\n
\u4e8c\u3001\u6212\u4e0d\u4e00\u81f4<\/h2>\n
\u6578\u64da\u7684\u4e00\u81f4\u6027\u662f\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\u7684\u53e6\u4e00\u500b\u91cd\u8981\u8003\u91cf\u3002\u8a2d\u8a08\u8005\u61c9\u78ba\u4fdd\u6578\u64da\u5728\u4e0d\u540c\u8868\u683c\u4e4b\u9593\u7684\u4e00\u81f4\u6027\uff0c\u4e26\u4f7f\u7528\u7d04\u675f\u689d\u4ef6\u4f86\u5f37\u5236\u57f7\u884c\u9019\u4e00\u9ede\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528\u552f\u4e00\u7d04\u675f\u4f86\u78ba\u4fdd\u67d0\u4e9b\u5b57\u6bb5\uff08\u5982\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\uff09\u5728\u6574\u500b\u6578\u64da\u5eab\u4e2d\u662f\u552f\u4e00\u7684\u3002<\/p>\n
ALTER TABLE Customers\nADD CONSTRAINT unique_email UNIQUE (ContactEmail);\n<\/code><\/pre>\n
\u4e09\u3001\u6212\u904e\u5ea6\u8907\u96dc<\/h2>\n
\u6578\u64da\u5eab\u8a2d\u8a08\u61c9\u8a72\u7c21\u55ae\u660e\u4e86\uff0c\u904e\u5ea6\u8907\u96dc\u7684\u8a2d\u8a08\u6703\u4f7f\u5f97\u6578\u64da\u5eab\u7684\u7dad\u8b77\u548c\u67e5\u8a62\u8b8a\u5f97\u56f0\u96e3\u3002\u8a2d\u8a08\u8005\u61c9\u8a72\u907f\u514d\u904e\u591a\u7684\u8868\u683c\u548c\u95dc\u806f\uff0c\u4e26\u78ba\u4fdd\u6bcf\u500b\u8868\u683c\u7684\u529f\u80fd\u660e\u78ba\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u4e00\u500b\u7c21\u55ae\u7684\u96fb\u5546\u5e73\u53f0\uff0c\u61c9\u8a72\u5c07\u7528\u6236\u3001\u7522\u54c1\u548c\u8a02\u55ae\u5206\u958b\uff0c\u4f46\u4e0d\u5fc5\u70ba\u6bcf\u4e00\u500b\u5c0f\u529f\u80fd\u5275\u5efa\u7368\u7acb\u7684\u8868\u683c\u3002<\/p>\n
\u56db\u3001\u6212\u7f3a\u4e4f\u6587\u6a94<\/h2>\n
\u826f\u597d\u7684\u6587\u6a94\u662f\u6578\u64da\u5eab\u8a2d\u8a08\u7684\u91cd\u8981\u7d44\u6210\u90e8\u5206\u3002\u8a2d\u8a08\u8005\u61c9\u8a72\u70ba\u6bcf\u500b\u8868\u683c\u3001\u5b57\u6bb5\u53ca\u5176\u95dc\u806f\u63d0\u4f9b\u8a73\u7d30\u7684\u8aaa\u660e\uff0c\u9019\u6a23\u5728\u672a\u4f86\u7684\u7dad\u8b77\u548c\u64f4\u5c55\u4e2d\uff0c\u5176\u4ed6\u958b\u767c\u8005\u80fd\u5920\u5feb\u901f\u7406\u89e3\u6578\u64da\u5eab\u7684\u7d50\u69cb\u548c\u908f\u8f2f\u3002\u4f7f\u7528ER\u5716\uff08\u5be6\u9ad4\u95dc\u4fc2\u5716\uff09\u4f86\u53ef\u8996\u5316\u6578\u64da\u5eab\u7d50\u69cb\u4e5f\u662f\u4e00\u500b\u597d\u65b9\u6cd5\u3002<\/p>\n
\u4e94\u3001\u6212\u5ffd\u8996\u6027\u80fd<\/h2>\n
\u6027\u80fd\u662f\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\u4e0d\u53ef\u5ffd\u8996\u7684\u4e00\u74b0\u3002\u8a2d\u8a08\u8005\u61c9\u8a72\u8003\u616e\u5230\u67e5\u8a62\u7684\u6548\u7387\uff0c\u4e26\u6839\u64da\u5be6\u969b\u9700\u6c42\u8a2d\u8a08\u7d22\u5f15\u3002\u904e\u591a\u7684\u7d22\u5f15\u6703\u5f71\u97ff\u5beb\u5165\u6027\u80fd\uff0c\u800c\u7f3a\u4e4f\u7d22\u5f15\u5247\u6703\u5c0e\u81f4\u67e5\u8a62\u901f\u5ea6\u7de9\u6162\u3002\u56e0\u6b64\uff0c\u8a2d\u8a08\u8005\u9700\u8981\u5728\u6027\u80fd\u548c\u5b58\u5132\u4e4b\u9593\u627e\u5230\u5e73\u8861\u3002<\/p>\n
CREATE INDEX idx_customer_name ON Customers(CustomerName);\n<\/code><\/pre>\n
\u7e3d\u7d50<\/h2>\n
\u5728Oracle\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\uff0c\u9075\u5faa\u4e94\u6212\u53ef\u4ee5\u5e6b\u52a9\u8a2d\u8a08\u8005\u5275\u5efa\u9ad8\u6548\u3001\u53ef\u7dad\u8b77\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u3002\u9019\u4e9b\u6212\u5f8b\u5305\u62ec\u6212\u5197\u9918\u3001\u6212\u4e0d\u4e00\u81f4\u3001\u6212\u904e\u5ea6\u8907\u96dc\u3001\u6212\u7f3a\u4e4f\u6587\u6a94\u548c\u6212\u5ffd\u8996\u6027\u80fd\u3002\u901a\u904e\u9075\u5faa\u9019\u4e9b\u539f\u5247\uff0c\u958b\u767c\u8005\u80fd\u5920\u78ba\u4fdd\u6578\u64da\u5eab\u7684\u7a69\u5b9a\u6027\u548c\u53ef\u64f4\u5c55\u6027\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u6578\u64da\u5eab\u9700\u6c42\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u5e6b\u52a9\u60a8\u8f15\u9b06\u7ba1\u7406\u548c\u64f4\u5c55\u60a8\u7684\u6578\u64da\u5eab\u74b0\u5883\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e86\u89e3Oracle\u6578\u64da\u5eab\u8a2d\u8a08\u7684\u4e94\u6212\uff0c\u78ba\u4fdd\u6578\u64da\u5b8c\u6574\u6027\u3001\u6027\u80fd\u512a\u5316\u3001\u5b89\u5168\u6027\u3001\u53ef\u64f4\u5c55\u6027\u53ca\u6613\u7dad\u8b77\u6027\uff0c\u63d0\u5347\u7cfb\u7d71\u6548\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-95800","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95800","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=95800"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95800\/revisions"}],"predecessor-version":[{"id":95801,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95800\/revisions\/95801"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=95800"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=95800"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=95800"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}