{"id":140422,"date":"2024-10-31T20:35:23","date_gmt":"2024-10-31T12:35:23","guid":{"rendered":"https:\/\/server.hk\/cnblog\/140422\/"},"modified":"2024-10-31T20:35:24","modified_gmt":"2024-10-31T12:35:24","slug":"sql-server%e5%a4%96%e9%8d%b5%e7%9a%84%e5%88%aa%e9%99%a4%e5%8f%8a%e6%9b%b4%e6%96%b0%e8%a6%8f%e5%89%87","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/140422\/","title":{"rendered":"sql server\u5916\u9375\u7684\u522a\u9664\u53ca\u66f4\u65b0\u898f\u5247"},"content":{"rendered":"<h1 id=\"sql-server-%e5%a4%96%e9%8d%b5%e7%9a%84%e5%88%aa%e9%99%a4%e5%8f%8a%e6%9b%b4%e6%96%b0%e8%a6%8f%e5%89%87-MHvRHRDbrP\">SQL Server \u5916\u9375\u7684\u522a\u9664\u53ca\u66f4\u65b0\u898f\u5247<\/h1>\n<p>\u5728\u95dc\u806f\u5f0f\u8cc7\u6599\u5eab\u4e2d\uff0c\u5916\u9375\uff08Foreign Key\uff09\u662f\u4e00\u7a2e\u91cd\u8981\u7684\u7d04\u675f\u689d\u4ef6\uff0c\u7528\u65bc\u7dad\u8b77\u8cc7\u6599\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u3002\u5916\u9375\u7684\u4e3b\u8981\u529f\u80fd\u662f\u5efa\u7acb\u5169\u500b\u8cc7\u6599\u8868\u4e4b\u9593\u7684\u95dc\u806f\uff0c\u4e26\u78ba\u4fdd\u5728\u4e00\u500b\u8868\u4e2d\u5f15\u7528\u7684\u8cc7\u6599\u5728\u53e6\u4e00\u500b\u8868\u4e2d\u662f\u5b58\u5728\u7684\u3002\u7576\u6d89\u53ca\u5230\u5916\u9375\u7684\u522a\u9664\u548c\u66f4\u65b0\u6642\uff0cSQL Server \u63d0\u4f9b\u4e86\u591a\u7a2e\u898f\u5247\u4f86\u8655\u7406\u9019\u4e9b\u64cd\u4f5c\uff0c\u4ee5\u78ba\u4fdd\u8cc7\u6599\u7684\u5b8c\u6574\u6027\u4e0d\u6703\u53d7\u5230\u5f71\u97ff\u3002<\/p>\n<h2 id=\"%e5%a4%96%e9%8d%b5%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-MHvRHRDbrP\">\u5916\u9375\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u5916\u9375\u662f\u6307\u4e00\u500b\u8868\u4e2d\u7684\u4e00\u500b\u6216\u591a\u500b\u6b04\u4f4d\uff0c\u5176\u503c\u5fc5\u9808\u5728\u53e6\u4e00\u500b\u8868\u7684\u4e3b\u9375\u6216\u552f\u4e00\u9375\u4e2d\u5b58\u5728\u3002\u9019\u7a2e\u95dc\u806f\u4f7f\u5f97\u8cc7\u6599\u5eab\u80fd\u5920\u4fdd\u6301\u8cc7\u6599\u7684\u4e00\u81f4\u6027\u3002\u4f8b\u5982\uff0c\u5047\u8a2d\u6709\u5169\u500b\u8868\uff1a<code>Customers<\/code> \u548c <code>Orders<\/code>\uff0c\u5176\u4e2d <code>Orders<\/code> \u8868\u4e2d\u7684 <code>CustomerID<\/code> \u6b04\u4f4d\u662f <code>Customers<\/code> \u8868\u7684\u5916\u9375\u3002\u9019\u610f\u5473\u8457\u6bcf\u4e00\u7b46\u8a02\u55ae\u90fd\u5fc5\u9808\u5c0d\u61c9\u5230\u4e00\u4f4d\u5ba2\u6236\u3002<\/p>\n<h2 id=\"%e5%88%aa%e9%99%a4%e5%a4%96%e9%8d%b5%e7%9a%84%e8%a6%8f%e5%89%87-MHvRHRDbrP\">\u522a\u9664\u5916\u9375\u7684\u898f\u5247<\/h2>\n<p>\u5728 SQL Server \u4e2d\uff0c\u7576\u522a\u9664\u4e00\u500b\u8868\u4e2d\u7684\u8cc7\u6599\u6642\uff0c\u5916\u9375\u7684\u884c\u70ba\u53d6\u6c7a\u65bc\u6240\u8a2d\u7f6e\u7684\u522a\u9664\u898f\u5247\u3002\u4e3b\u8981\u6709\u4ee5\u4e0b\u5e7e\u7a2e\u9078\u64c7\uff1a<\/p>\n<ul>\n<li><strong>CASCADE<\/strong>\uff1a\u7576\u4e3b\u8868\u4e2d\u7684\u8cc7\u6599\u88ab\u522a\u9664\u6642\uff0c\u6240\u6709\u5f15\u7528\u8a72\u8cc7\u6599\u7684\u5916\u9375\u8cc7\u6599\u4e5f\u6703\u81ea\u52d5\u88ab\u522a\u9664\u3002\u4f8b\u5982\uff0c\u5982\u679c\u522a\u9664\u4e00\u4f4d\u5ba2\u6236\uff0c\u5247\u6240\u6709\u8a72\u5ba2\u6236\u7684\u8a02\u55ae\u4e5f\u6703\u88ab\u522a\u9664\u3002<\/li>\n<li><strong>SET NULL<\/strong>\uff1a\u7576\u4e3b\u8868\u4e2d\u7684\u8cc7\u6599\u88ab\u522a\u9664\u6642\uff0c\u6240\u6709\u5f15\u7528\u8a72\u8cc7\u6599\u7684\u5916\u9375\u6b04\u4f4d\u6703\u88ab\u8a2d\u7f6e\u70ba NULL\u3002\u9019\u610f\u5473\u8457\u8a72\u8a02\u55ae\u5c07\u4e0d\u518d\u95dc\u806f\u5230\u4efb\u4f55\u5ba2\u6236\u3002<\/li>\n<li><strong>NO ACTION<\/strong>\uff1a\u5982\u679c\u5617\u8a66\u522a\u9664\u4e3b\u8868\u4e2d\u7684\u8cc7\u6599\uff0c\u800c\u8a72\u8cc7\u6599\u4ecd\u88ab\u5916\u9375\u5f15\u7528\uff0c\u5247\u6703\u5f15\u767c\u932f\u8aa4\uff0c\u963b\u6b62\u522a\u9664\u64cd\u4f5c\u3002<\/li>\n<li><strong>SET DEFAULT<\/strong>\uff1a\u7576\u4e3b\u8868\u4e2d\u7684\u8cc7\u6599\u88ab\u522a\u9664\u6642\uff0c\u6240\u6709\u5f15\u7528\u8a72\u8cc7\u6599\u7684\u5916\u9375\u6b04\u4f4d\u6703\u88ab\u8a2d\u7f6e\u70ba\u9810\u8a2d\u503c\u3002<\/li>\n<\/ul>\n<h3 id=\"%e7%af%84%e4%be%8b%ef%bc%9a%e5%88%aa%e9%99%a4%e8%a6%8f%e5%89%87%e7%9a%84%e8%a8%ad%e7%bd%ae-MHvRHRDbrP\">\u7bc4\u4f8b\uff1a\u522a\u9664\u898f\u5247\u7684\u8a2d\u7f6e<\/h3>\n<pre><code>CREATE TABLE Customers (\n    CustomerID INT PRIMARY KEY,\n    CustomerName NVARCHAR(100)\n);\n\nCREATE TABLE Orders (\n    OrderID INT PRIMARY KEY,\n    CustomerID INT,\n    FOREIGN KEY (CustomerID) REFERENCES Customers(CustomerID) ON DELETE CASCADE\n);<\/code><\/pre>\n<p>\u5728\u4e0a\u8ff0\u7bc4\u4f8b\u4e2d\uff0c\u7576 <code>Customers<\/code> \u8868\u4e2d\u7684\u67d0\u4f4d\u5ba2\u6236\u88ab\u522a\u9664\u6642\uff0c\u6240\u6709\u8207\u8a72\u5ba2\u6236\u76f8\u95dc\u7684\u8a02\u55ae\u4e5f\u6703\u81ea\u52d5\u88ab\u522a\u9664\u3002<\/p>\n<h2 id=\"%e6%9b%b4%e6%96%b0%e5%a4%96%e9%8d%b5%e7%9a%84%e8%a6%8f%e5%89%87-MHvRHRDbrP\">\u66f4\u65b0\u5916\u9375\u7684\u898f\u5247<\/h2>\n<p>\u985e\u4f3c\u65bc\u522a\u9664\uff0c\u66f4\u65b0\u5916\u9375\u7684\u884c\u70ba\u4e5f\u53d6\u6c7a\u65bc\u6240\u8a2d\u7f6e\u7684\u66f4\u65b0\u898f\u5247\u3002\u4e3b\u8981\u6709\u4ee5\u4e0b\u5e7e\u7a2e\u9078\u64c7\uff1a<\/p>\n<ul>\n<li><strong>CASCADE<\/strong>\uff1a\u7576\u4e3b\u8868\u4e2d\u7684\u4e3b\u9375\u88ab\u66f4\u65b0\u6642\uff0c\u6240\u6709\u5f15\u7528\u8a72\u4e3b\u9375\u7684\u5916\u9375\u8cc7\u6599\u4e5f\u6703\u81ea\u52d5\u66f4\u65b0\u3002<\/li>\n<li><strong>SET NULL<\/strong>\uff1a\u7576\u4e3b\u8868\u4e2d\u7684\u4e3b\u9375\u88ab\u66f4\u65b0\u6642\uff0c\u6240\u6709\u5f15\u7528\u8a72\u4e3b\u9375\u7684\u5916\u9375\u6b04\u4f4d\u6703\u88ab\u8a2d\u7f6e\u70ba NULL\u3002<\/li>\n<li><strong>NO ACTION<\/strong>\uff1a\u5982\u679c\u5617\u8a66\u66f4\u65b0\u4e3b\u8868\u4e2d\u7684\u4e3b\u9375\uff0c\u800c\u8a72\u4e3b\u9375\u4ecd\u88ab\u5916\u9375\u5f15\u7528\uff0c\u5247\u6703\u5f15\u767c\u932f\u8aa4\uff0c\u963b\u6b62\u66f4\u65b0\u64cd\u4f5c\u3002<\/li>\n<li><strong>SET DEFAULT<\/strong>\uff1a\u7576\u4e3b\u8868\u4e2d\u7684\u4e3b\u9375\u88ab\u66f4\u65b0\u6642\uff0c\u6240\u6709\u5f15\u7528\u8a72\u4e3b\u9375\u7684\u5916\u9375\u6b04\u4f4d\u6703\u88ab\u8a2d\u7f6e\u70ba\u9810\u8a2d\u503c\u3002<\/li>\n<\/ul>\n<h3 id=\"%e7%af%84%e4%be%8b%ef%bc%9a%e6%9b%b4%e6%96%b0%e8%a6%8f%e5%89%87%e7%9a%84%e8%a8%ad%e7%bd%ae-MHvRHRDbrP\">\u7bc4\u4f8b\uff1a\u66f4\u65b0\u898f\u5247\u7684\u8a2d\u7f6e<\/h3>\n<pre><code>CREATE TABLE Customers (\n    CustomerID INT PRIMARY KEY,\n    CustomerName NVARCHAR(100)\n);\n\nCREATE TABLE Orders (\n    OrderID INT PRIMARY KEY,\n    CustomerID INT,\n    FOREIGN KEY (CustomerID) REFERENCES Customers(CustomerID) ON UPDATE CASCADE\n);<\/code><\/pre>\n<p>\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u7576 <code>Customers<\/code> \u8868\u4e2d\u7684\u67d0\u4f4d\u5ba2\u6236\u7684 <code>CustomerID<\/code> \u88ab\u66f4\u65b0\u6642\uff0c\u6240\u6709\u8207\u8a72\u5ba2\u6236\u76f8\u95dc\u7684\u8a02\u55ae\u4e2d\u7684 <code>CustomerID<\/code> \u4e5f\u6703\u81ea\u52d5\u66f4\u65b0\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-MHvRHRDbrP\">\u7e3d\u7d50<\/h2>\n<p>\u5728 SQL Server \u4e2d\uff0c\u5916\u9375\u7684\u522a\u9664\u548c\u66f4\u65b0\u898f\u5247\u662f\u7dad\u8b77\u8cc7\u6599\u5b8c\u6574\u6027\u7684\u91cd\u8981\u6a5f\u5236\u3002\u900f\u904e\u9069\u7576\u7684\u8a2d\u7f6e\uff0c\u53ef\u4ee5\u78ba\u4fdd\u8cc7\u6599\u4e4b\u9593\u7684\u95dc\u806f\u4e0d\u6703\u56e0\u70ba\u522a\u9664\u6216\u66f4\u65b0\u64cd\u4f5c\u800c\u53d7\u5230\u7834\u58de\u3002\u4e86\u89e3\u9019\u4e9b\u898f\u5247\u4e0d\u50c5\u6709\u52a9\u65bc\u8cc7\u6599\u5eab\u8a2d\u8a08\uff0c\u9084\u80fd\u63d0\u9ad8\u8cc7\u6599\u64cd\u4f5c\u7684\u5b89\u5168\u6027\u548c\u53ef\u9760\u6027\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f\u8cc7\u6599\u5eab\u7ba1\u7406\u9084\u662f\u7db2\u7ad9\u6258\u7ba1\uff0c\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3SQL Server\u4e2d\u5916\u9375\u7684\u522a\u9664\u53ca\u66f4\u65b0\u898f\u5247\uff0c\u78ba\u4fdd\u6578\u64da\u5b8c\u6574\u6027\u8207\u95dc\u806f\u6027\uff0c\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u932f\u8aa4\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-140422","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/140422","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=140422"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/140422\/revisions"}],"predecessor-version":[{"id":140423,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/140422\/revisions\/140423"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=140422"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=140422"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=140422"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}