{"id":140426,"date":"2024-10-31T20:37:20","date_gmt":"2024-10-31T12:37:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/140426\/"},"modified":"2024-10-31T20:37:21","modified_gmt":"2024-10-31T12:37:21","slug":"sql-server%e5%a4%96%e9%8d%b5%e5%bb%ba%e7%ab%8b%e7%9a%84%e5%af%ab%e6%b3%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/140426\/","title":{"rendered":"sql server\u5916\u9375\u5efa\u7acb\u7684\u5beb\u6cd5"},"content":{"rendered":"<h1 id=\"sql-server-%e5%a4%96%e9%8d%b5%e5%bb%ba%e7%ab%8b%e7%9a%84%e5%af%ab%e6%b3%95-iSNTnxHQfl\">SQL Server \u5916\u9375\u5efa\u7acb\u7684\u5beb\u6cd5<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u8a2d\u8a08\u4e2d\uff0c\u5916\u9375\uff08Foreign Key\uff09\u662f\u4e00\u500b\u91cd\u8981\u7684\u6982\u5ff5\uff0c\u5b83\u7528\u65bc\u5efa\u7acb\u5169\u500b\u8cc7\u6599\u8868\u4e4b\u9593\u7684\u95dc\u806f\u3002\u900f\u904e\u5916\u9375\uff0c\u6211\u5011\u53ef\u4ee5\u78ba\u4fdd\u8cc7\u6599\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e SQL Server \u4e2d\u5916\u9375\u7684\u5efa\u7acb\u65b9\u6cd5\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u7bc4\u4f8b\u548c\u6ce8\u610f\u4e8b\u9805\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%a4%96%e9%8d%b5%ef%bc%9f-iSNTnxHQfl\">\u4ec0\u9ebc\u662f\u5916\u9375\uff1f<\/h2>\n<p>\u5916\u9375\u662f\u4e00\u500b\u8cc7\u6599\u8868\u4e2d\u7684\u6b04\u4f4d\uff0c\u5b83\u53c3\u8003\u53e6\u4e00\u500b\u8cc7\u6599\u8868\u7684\u4e3b\u9375\u3002\u9019\u7a2e\u95dc\u806f\u4f7f\u5f97\u8cc7\u6599\u5eab\u80fd\u5920\u7dad\u6301\u8cc7\u6599\u7684\u5b8c\u6574\u6027\uff0c\u9632\u6b62\u4e0d\u4e00\u81f4\u7684\u8cc7\u6599\u51fa\u73fe\u3002\u4f8b\u5982\uff0c\u5047\u8a2d\u6709\u4e00\u500b\u300c\u8a02\u55ae\u300d\u8cc7\u6599\u8868\u548c\u4e00\u500b\u300c\u5ba2\u6236\u300d\u8cc7\u6599\u8868\uff0c\u8a02\u55ae\u8cc7\u6599\u8868\u4e2d\u7684\u300c\u5ba2\u6236ID\u300d\u53ef\u4ee5\u4f5c\u70ba\u5916\u9375\uff0c\u53c3\u8003\u5ba2\u6236\u8cc7\u6599\u8868\u4e2d\u7684\u300c\u5ba2\u6236ID\u300d\u4e3b\u9375\u3002<\/p>\n<h2 id=\"%e5%bb%ba%e7%ab%8b%e5%a4%96%e9%8d%b5%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-iSNTnxHQfl\">\u5efa\u7acb\u5916\u9375\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>\u5728 SQL Server \u4e2d\uff0c\u5efa\u7acb\u5916\u9375\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>ALTER TABLE \u8868\u540d\nADD CONSTRAINT \u5916\u9375\u540d\u7a31\nFOREIGN KEY (\u5916\u9375\u6b04\u4f4d)\nREFERENCES \u53c3\u8003\u8868\u540d (\u4e3b\u9375\u6b04\u4f4d);<\/code><\/pre>\n<h2 id=\"%e7%af%84%e4%be%8b%ef%bc%9a%e5%bb%ba%e7%ab%8b%e5%a4%96%e9%8d%b5-iSNTnxHQfl\">\u7bc4\u4f8b\uff1a\u5efa\u7acb\u5916\u9375<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u5177\u9ad4\u7684\u7bc4\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5728 SQL Server \u4e2d\u5efa\u7acb\u5916\u9375\u3002<\/p>\n<h3 id=\"%e6%ad%a5%e9%a9%9f-1%ef%bc%9a%e5%89%b5%e5%bb%ba%e8%b3%87%e6%96%99%e8%a1%a8-iSNTnxHQfl\">\u6b65\u9a5f 1\uff1a\u5275\u5efa\u8cc7\u6599\u8868<\/h3>\n<p>\u9996\u5148\uff0c\u6211\u5011\u9700\u8981\u5275\u5efa\u5169\u500b\u8cc7\u6599\u8868\uff1a\u4e00\u500b\u662f\u300c\u5ba2\u6236\u300d\u8cc7\u6599\u8868\uff0c\u53e6\u4e00\u500b\u662f\u300c\u8a02\u55ae\u300d\u8cc7\u6599\u8868\u3002<\/p>\n<pre><code>CREATE TABLE \u5ba2\u6236 (\n    \u5ba2\u6236ID INT PRIMARY KEY,\n    \u5ba2\u6236\u540d\u7a31 NVARCHAR(100)\n);\n\nCREATE TABLE \u8a02\u55ae (\n    \u8a02\u55aeID INT PRIMARY KEY,\n    \u5ba2\u6236ID INT,\n    \u8a02\u55ae\u65e5\u671f DATETIME\n);<\/code><\/pre>\n<h3 id=\"%e6%ad%a5%e9%a9%9f-2%ef%bc%9a%e6%b7%bb%e5%8a%a0%e5%a4%96%e9%8d%b5-iSNTnxHQfl\">\u6b65\u9a5f 2\uff1a\u6dfb\u52a0\u5916\u9375<\/h3>\n<p>\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u5c07\u5728\u300c\u8a02\u55ae\u300d\u8cc7\u6599\u8868\u4e2d\u6dfb\u52a0\u4e00\u500b\u5916\u9375\uff0c\u53c3\u8003\u300c\u5ba2\u6236\u300d\u8cc7\u6599\u8868\u7684\u300c\u5ba2\u6236ID\u300d\u3002<\/p>\n<pre><code>ALTER TABLE \u8a02\u55ae\nADD CONSTRAINT FK_\u8a02\u55ae_\u5ba2\u6236\nFOREIGN KEY (\u5ba2\u6236ID)\nREFERENCES \u5ba2\u6236 (\u5ba2\u6236ID);<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-iSNTnxHQfl\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li>\u5728\u6dfb\u52a0\u5916\u9375\u4e4b\u524d\uff0c\u78ba\u4fdd\u53c3\u8003\u7684\u4e3b\u9375\u5df2\u7d93\u5b58\u5728\u3002<\/li>\n<li>\u5916\u9375\u6b04\u4f4d\u7684\u8cc7\u6599\u985e\u578b\u5fc5\u9808\u8207\u53c3\u8003\u7684\u4e3b\u9375\u6b04\u4f4d\u76f8\u540c\u3002<\/li>\n<li>\u5982\u679c\u5728\u5916\u9375\u6b04\u4f4d\u4e2d\u63d2\u5165\u4e00\u500b\u4e0d\u5b58\u5728\u65bc\u4e3b\u9375\u6b04\u4f4d\u7684\u503c\uff0c\u5c07\u6703\u5c0e\u81f4\u932f\u8aa4\u3002<\/li>\n<li>\u53ef\u4ee5\u4f7f\u7528 ON DELETE \u548c ON UPDATE \u5b50\u53e5\u4f86\u5b9a\u7fa9\u5728\u522a\u9664\u6216\u66f4\u65b0\u53c3\u8003\u8cc7\u6599\u6642\u7684\u884c\u70ba\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%bd%bf%e7%94%a8-on-delete-%e5%92%8c-on-update-iSNTnxHQfl\">\u4f7f\u7528 ON DELETE \u548c ON UPDATE<\/h2>\n<p>\u5728\u5efa\u7acb\u5916\u9375\u6642\uff0c\u53ef\u4ee5\u6307\u5b9a\u5728\u522a\u9664\u6216\u66f4\u65b0\u53c3\u8003\u8cc7\u6599\u6642\u7684\u884c\u70ba\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u4f7f\u7528\u9019\u4e9b\u9078\u9805\u7684\u7bc4\u4f8b\uff1a<\/p>\n<pre><code>ALTER TABLE \u8a02\u55ae\nADD CONSTRAINT FK_\u8a02\u55ae_\u5ba2\u6236\nFOREIGN KEY (\u5ba2\u6236ID)\nREFERENCES \u5ba2\u6236 (\u5ba2\u6236ID)\nON DELETE CASCADE\nON UPDATE CASCADE;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u7576\u300c\u5ba2\u6236\u300d\u8cc7\u6599\u8868\u4e2d\u7684\u67d0\u500b\u5ba2\u6236\u88ab\u522a\u9664\u6642\uff0c\u6240\u6709\u76f8\u95dc\u7684\u8a02\u55ae\u4e5f\u6703\u81ea\u52d5\u88ab\u522a\u9664\uff1b\u540c\u6a23\u5730\uff0c\u7576\u5ba2\u6236ID\u88ab\u66f4\u65b0\u6642\uff0c\u8a02\u55ae\u8cc7\u6599\u8868\u4e2d\u7684\u5ba2\u6236ID\u4e5f\u6703\u96a8\u4e4b\u66f4\u65b0\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-iSNTnxHQfl\">\u7e3d\u7d50<\/h2>\n<p>\u5916\u9375\u5728 SQL Server \u4e2d\u626e\u6f14\u8457\u91cd\u8981\u7684\u89d2\u8272\uff0c\u5e6b\u52a9\u7dad\u8b77\u8cc7\u6599\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u3002\u900f\u904e\u6b63\u78ba\u7684\u8a9e\u6cd5\u548c\u6ce8\u610f\u4e8b\u9805\uff0c\u6211\u5011\u53ef\u4ee5\u6709\u6548\u5730\u5efa\u7acb\u548c\u7ba1\u7406\u5916\u9375\u95dc\u806f\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u80fd\u548c\u7a69\u5b9a\u6027\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4e5f\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u4e86\u89e3\u5982\u4f55\u5728 SQL Server \u4e2d\u4f7f\u7528\u5916\u9375\uff0c\u5c07\u6709\u52a9\u65bc\u63d0\u5347\u8cc7\u6599\u5eab\u7684\u8a2d\u8a08\u548c\u7ba1\u7406\u6548\u7387\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3SQL Server\u4e2d\u5916\u9375\u5efa\u7acb\u7684\u5beb\u6cd5\uff0c\u5b78\u7fd2\u5982\u4f55\u6709\u6548\u7ba1\u7406\u8cc7\u6599\u8868\u4e4b\u9593\u7684\u95dc\u806f\u6027\uff0c\u78ba\u4fdd\u6578\u64da\u5b8c\u6574\u6027\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-140426","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/140426","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=140426"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/140426\/revisions"}],"predecessor-version":[{"id":140427,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/140426\/revisions\/140427"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=140426"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=140426"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=140426"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}