{"id":187748,"date":"2024-11-11T16:51:17","date_gmt":"2024-11-11T08:51:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/187748\/"},"modified":"2024-11-11T16:51:18","modified_gmt":"2024-11-11T08:51:18","slug":"%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84%e7%94%b7%e5%a5%b3%e7%b4%84%e6%9d%9f%ef%bc%8c%e5%a6%82%e4%bd%95%e4%bf%9d%e8%ad%89%e6%95%b8%e6%93%9a%e7%9a%84%e6%ba%96%e7%a2%ba%e6%80%a7%ef%bc%9f-%e6%95%b8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/187748\/","title":{"rendered":"\u6578\u64da\u5eab\u4e2d\u7684\u7537\u5973\u7d04\u675f\uff0c\u5982\u4f55\u4fdd\u8b49\u6578\u64da\u7684\u6e96\u78ba\u6027\uff1f (\u6578\u64da\u5eab \u7537\u5973\u7d04\u675f)"},"content":{"rendered":"<h1 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84%e7%94%b7%e5%a5%b3%e7%b4%84%e6%9d%9f%ef%bc%8c%e5%a6%82%e4%bd%95%e4%bf%9d%e8%ad%89%e6%95%b8%e6%93%9a%e7%9a%84%e6%ba%96%e7%a2%ba%e6%80%a7%ef%bc%9f-aEtxadhFFM\">\u6578\u64da\u5eab\u4e2d\u7684\u7537\u5973\u7d04\u675f\uff0c\u5982\u4f55\u4fdd\u8b49\u6578\u64da\u7684\u6e96\u78ba\u6027\uff1f<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u6e96\u78ba\u6027\u5c0d\u65bc\u4f01\u696d\u7684\u904b\u71df\u548c\u6c7a\u7b56\u81f3\u95dc\u91cd\u8981\u3002\u5c24\u5176\u662f\u5728\u6d89\u53ca\u6027\u5225\u7684\u6578\u64da\u6642\uff0c\u5982\u4f55\u8a2d\u7f6e\u7537\u5973\u7d04\u675f\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u6e96\u78ba\u6027\u6210\u70ba\u4e00\u500b\u91cd\u8981\u7684\u8ab2\u984c\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u6578\u64da\u5eab\u4e2d\u7537\u5973\u7d04\u675f\u7684\u6982\u5ff5\u3001\u5be6\u65bd\u65b9\u6cd5\u4ee5\u53ca\u5982\u4f55\u4fdd\u8b49\u6578\u64da\u7684\u6e96\u78ba\u6027\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e7%94%b7%e5%a5%b3%e7%b4%84%e6%9d%9f%ef%bc%9f-aEtxadhFFM\">\u4ec0\u9ebc\u662f\u7537\u5973\u7d04\u675f\uff1f<\/h2>\n<p>\u7537\u5973\u7d04\u675f\u662f\u6307\u5728\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\uff0c\u5c0d\u6027\u5225\u5b57\u6bb5\u9032\u884c\u9650\u5236\uff0c\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u6e96\u78ba\u6027\u3002\u9019\u7a2e\u7d04\u675f\u901a\u5e38\u7528\u65bc\u9700\u8981\u6027\u5225\u4fe1\u606f\u7684\u61c9\u7528\u5834\u666f\uff0c\u4f8b\u5982\u4eba\u529b\u8cc7\u6e90\u7ba1\u7406\u3001\u91ab\u7642\u8a18\u9304\u548c\u5e02\u5834\u8abf\u67e5\u7b49\u3002\u901a\u904e\u8a2d\u7f6e\u7537\u5973\u7d04\u675f\uff0c\u53ef\u4ee5\u9632\u6b62\u4e0d\u6b63\u78ba\u6216\u4e0d\u4e00\u81f4\u7684\u6578\u64da\u8f38\u5165\uff0c\u5f9e\u800c\u63d0\u9ad8\u6578\u64da\u7684\u53ef\u9760\u6027\u3002<\/p>\n<h2 id=\"%e5%a6%82%e4%bd%95%e5%af%a6%e6%96%bd%e7%94%b7%e5%a5%b3%e7%b4%84%e6%9d%9f%ef%bc%9f-aEtxadhFFM\">\u5982\u4f55\u5be6\u65bd\u7537\u5973\u7d04\u675f\uff1f<\/h2>\n<p>\u5be6\u65bd\u7537\u5973\u7d04\u675f\u7684\u65b9\u5f0f\u6709\u591a\u7a2e\uff0c\u4ee5\u4e0b\u662f\u5e7e\u7a2e\u5e38\u898b\u7684\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u985e\u578b\u9650\u5236\uff1a<\/strong>\u5728\u6578\u64da\u5eab\u4e2d\uff0c\u6027\u5225\u5b57\u6bb5\u53ef\u4ee5\u8a2d\u7f6e\u70ba\u7279\u5b9a\u7684\u6578\u64da\u985e\u578b\uff0c\u4f8b\u5982\u5b57\u7b26\u578b\uff08CHAR\uff09\u6216\u6574\u6578\u578b\uff08INTEGER\uff09\uff0c\u4e26\u9650\u5236\u5176\u503c\u70ba\u201c\u7537\u201d\u6216\u201c\u5973\u201d\u3002<\/li>\n<li><strong>\u6aa2\u67e5\u7d04\u675f\uff08CHECK constraint\uff09\uff1a<\/strong>\u4f7f\u7528\u6aa2\u67e5\u7d04\u675f\u4f86\u9650\u5236\u6027\u5225\u5b57\u6bb5\u7684\u503c\u3002\u4f8b\u5982\uff0c\u5728SQL\u4e2d\u53ef\u4ee5\u9019\u6a23\u8a2d\u7f6e\uff1a<\/li>\n<\/ul>\n<pre><code>CREATE TABLE Users (\n    ID INT PRIMARY KEY,\n    Name VARCHAR(100),\n    Gender CHAR(1) CHECK (Gender IN ('M', 'F'))\n);<\/code><\/pre>\n<ul>\n<li><strong>\u89f8\u767c\u5668\uff08Triggers\uff09\uff1a<\/strong>\u53ef\u4ee5\u4f7f\u7528\u89f8\u767c\u5668\u4f86\u6aa2\u67e5\u6578\u64da\u7684\u6709\u6548\u6027\uff0c\u7576\u63d2\u5165\u6216\u66f4\u65b0\u6578\u64da\u6642\uff0c\u81ea\u52d5\u6aa2\u67e5\u6027\u5225\u5b57\u6bb5\u7684\u503c\u662f\u5426\u7b26\u5408\u8981\u6c42\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bf%9d%e8%ad%89%e6%95%b8%e6%93%9a%e7%9a%84%e6%ba%96%e7%a2%ba%e6%80%a7%ef%bc%9f-aEtxadhFFM\">\u5982\u4f55\u4fdd\u8b49\u6578\u64da\u7684\u6e96\u78ba\u6027\uff1f<\/h2>\n<p>\u9664\u4e86\u8a2d\u7f6e\u7537\u5973\u7d04\u675f\u5916\uff0c\u9084\u6709\u5176\u4ed6\u5e7e\u7a2e\u65b9\u6cd5\u53ef\u4ee5\u4fdd\u8b49\u6578\u64da\u7684\u6e96\u78ba\u6027\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u9a57\u8b49\uff1a<\/strong>\u5728\u6578\u64da\u8f38\u5165\u968e\u6bb5\uff0c\u901a\u904e\u524d\u7aef\u9a57\u8b49\u4f86\u78ba\u4fdd\u7528\u6236\u8f38\u5165\u7684\u6027\u5225\u4fe1\u606f\u662f\u6b63\u78ba\u7684\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528JavaScript\u9032\u884c\u5373\u6642\u9a57\u8b49\uff0c\u63d0\u793a\u7528\u6236\u9078\u64c7\u6709\u6548\u7684\u6027\u5225\u9078\u9805\u3002<\/li>\n<li><strong>\u6578\u64da\u6e05\u7406\uff1a<\/strong>\u5b9a\u671f\u5c0d\u6578\u64da\u5eab\u9032\u884c\u6e05\u7406\uff0c\u6aa2\u67e5\u4e26\u4fee\u6b63\u4e0d\u4e00\u81f4\u6216\u932f\u8aa4\u7684<br \/>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u8a0e\u6578\u64da\u5eab\u4e2d\u7537\u5973\u7d04\u675f\u7684\u5be6\u65bd\u65b9\u6cd5\uff0c\u78ba\u4fdd\u6578\u64da\u6e96\u78ba\u6027\u8207\u5b8c\u6574\u6027\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u7684\u6709\u6548\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-187748","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187748","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=187748"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187748\/revisions"}],"predecessor-version":[{"id":187749,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187748\/revisions\/187749"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=187748"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=187748"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=187748"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}