{"id":3183,"date":"2018-02-24T10:21:17","date_gmt":"2018-02-24T02:21:17","guid":{"rendered":"http:\/\/cn.hostease.com\/xueyuan\/?p=3183"},"modified":"2018-02-24T10:21:17","modified_gmt":"2018-02-24T02:21:17","slug":"mysql%e4%b8%ad%e7%9a%84%e9%94%ae%e5%92%8c%e7%b4%a2%e5%bc%95","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/xueyuan\/uncategorized\/mysql%e4%b8%ad%e7%9a%84%e9%94%ae%e5%92%8c%e7%b4%a2%e5%bc%95\/","title":{"rendered":"mysql\u4e2d\u7684\u952e\u548c\u7d22\u5f15"},"content":{"rendered":"<div class=\"artical-content-bak main-content\">\n<div class=\"con artical-content editor-preview-side\">\n<h1>\u4e00\u3001\u4e3b\u952e \u7d22\u5f15 \u5173\u7cfb<\/h1>\n<p>1.\u4e3b\u952e\uff1a\u4e3b\u952e\u7684\u552f\u4e00\u4f5c\u7528\u5c31\u662f<strong>\u552f\u4e00\u6807\u8bc6<\/strong>\u8868\u4e2d\u7684\u67d0\u4e00\u884c\u6570\u636e\u3002\u5206\u4e3a\u5355\u4e00\u4e3b\u952e\u548c\u8054\u5408\u4e3b\u952e\uff1a<br \/>\n<strong>\u5355\u4e00\u4e3b\u952e\uff1a\u53ea\u7528\u4e00\u5217\u5c31\u80fd\u552f\u4e00\u6807\u8bc6\u4e00\u884c\u3002<\/strong><br \/>\n\u8054\u5408\u4e3b\u952e\uff1a\u5f53\u4f7f\u7528\u4e00\u5217\u5df2\u7ecf\u4e0d\u80fd\u552f\u4e00\u6807\u793a\u4e00\u884c\u7684\u65f6\u5019\uff0c\u5c31\u8981\u91c7\u7528\u591a\u5217\u552f\u4e00\u6807\u8bc6\u4e00\u884c\uff0c\u5c31\u662f\u8054\u5408\u4e3b\u952e\u3002<strong>\u8054\u5408\u4e3b\u5065\u591a\u4e2a\u5b57\u6bb5\u4e0d\u80fd\u540c\u65f6\u76f8\u540c<\/strong><\/p>\n<p>2.\u7d22\u5f15\uff1a\u7d22\u5f15\u7684\u4f5c\u7528\u5c31\u662f\u63d0\u9ad8\u6570\u636e\u7684\u68c0\u7d22\u901f\u5ea6\uff0c\u5206\u4e3a\u5355\u4e00\u7d22\u5f15\u548c\u8054\u5408\u7d22\u5f15\uff1a<br \/>\n\u5355\u4e00\u7d22\u5f15\uff1a\u53ea\u662f\u7528\u67d0\u4e00\u5217\u6570\u636e\u4f5c\u4e3a\u7d22\u5f15\uff0c\u9ed8\u8ba4\u662findex\u7d22\u5f15\uff0c\u8fd9\u4e00\u5217\u53ef\u4ee5\u5305\u542b\u91cd\u590d\u6570\u636e\uff1b\u5982\u679c\u67d0\u4e00\u5217\u4e0d\u5b58\u5728\u91cd\u590d\u6570\u636e\u6700\u597d\u8bbe\u7f6e\u6210unique\u5f62\u5f0f\u7684\u7d22\u5f15\uff0c\u6bd4index\u7684\u7d22\u5f15\u901f\u5ea6\u66f4\u5feb\uff0c\u5728text\u6570\u636e\u4e0a\u8981\u4f7f\u7528fulltext\u7d22\u5f15\u3002<br \/>\n\u8054\u5408\u7d22\u5f15\uff1a\u4e3a\u4e86\u66f4\u8fdb\u4e00\u6b65\u63d0\u9ad8\u68c0\u7d22\u901f\u5ea6\uff0c\u6bcf\u6b21\u68c0\u7d22\u90fd\u9700\u8981\u7528\u591a\u5217\u540c\u65f6\u8fdb\u884c\u65f6\uff0c\u5c31\u53ef\u4ee5\u628a\u8fd9\u591a\u5217\u8bbe\u4e3a\u8054\u5408\u7d22\u5f15\uff0c\u63d0\u9ad8\u7d22\u5f15\u901f\u5ea6\uff0c\u6839\u636e\u591a\u5217\u662f\u5426\u552f\u4e00\uff0c\u4e5f\u5206\u4e3aindex\u7d22\u5f15\u548cunique\u7d22\u5f15\u3002<br \/>\n<strong> \u8054\u5408\u7d22\u5f15\u7684\u4f7f\u7528\u5fc5\u987b\u6ce8\u610f\uff1a\u4e0d\u80fd\u57ae\u5b57\u6bb5\u4f7f\u7528\uff0c\u6bd4\u5982a b c\u8054\u5408\u7d22\u5f15 \u53ea\u6709a\uff5cab\uff5cabc \u624d\u80fd\u7528\u4e0a\u8054\u5408\u7d22\u5f15\u5b57\u6bb5\u3002<\/strong><\/p>\n<p>3.\u4e3b\u952e\u4e00\u5b9a\u662f\u7d22\u5f15\uff0c\u4f46\u662f\u7d22\u5f15\u4e0d\u4e00\u5b9a\u662f\u4e3b\u952e\u3002\u4e00\u4e2a\u8868\u53ea\u80fd\u6709\u4e00\u4e2a\u4e3b\u952e\u6216\u8054\u5408\u4e3b\u952e\uff0c\u4f46\u662f\u53ef\u4ee5\u6709\u591a\u4e2a\u7d22\u5f15\u3002<br \/>\n\u4e3b\u952e\u5b57\u6bb5\u5fc5\u987b\u4e0d\u80fd\u4e3a\u7a7a\uff0c\u4f46\u662f\u7d22\u5f15\u5b57\u6bb5\u53ef\u4ee5\u4e3a\u7a7a\u3002<\/p>\n<h1>\u4e8c\u3001\u5916\u952e\u548c\u4e3b\u5065\u7684\u5173\u7cfb<\/h1>\n<p>1.\u5916\u952e\u5c31\u662f\u8ba9\u8868\u4e2d\u5b57\u6bb5\u7684\u503c\u5728\u53c2\u7167\u8868\u4e2d\u7684\u5b57\u6bb5\u4e2d\u9009\u62e9\u7684\u4e00\u79cd\u7ea6\u675f\u6807\u793a<br \/>\n2.\u521b\u5efa\u5916\u952e\u7684\u6761\u4ef6<br \/>\n\u88ab\u53c2\u7167\u5b57\u6bb5\u5fc5\u987b\u662f\u4e3b\u952e<br \/>\n\u53c2\u7167\u5b57\u6bb5\u548c\u88ab\u53c2\u7167\u5b57\u6bb5\u5fc5\u987b\u662f\u76f8\u540c\u7684\u6570\u636e\u7c7b\u578b<br \/>\n\u8868\u7684\u50a8\u5b58\u5f15\u64ce\u5fc5\u987b\u662finnodb<\/p>\n<h1>\u4e09\u3001\u8bed\u6cd5\u683c\u5f0f<\/h1>\n<p><strong>1.\u521b\u5efa\u4e3b\u952e\u7684\u547d\u4ee4\u683c\u5f0f<\/strong><\/p>\n<pre><code class=\"hljs cs\"><span class=\"hljs-number\">1.1<\/span>.\u5728\u521b\u5efa\u8868\u65f6\u521b\u5efa\u4e3b\u5065\r\ncreate table \u8868\u540d(\u5b57\u6bb5\u5217\u8868\uff0c<span class=\"hljs-function\">primary <span class=\"hljs-title\">key<\/span>(<span class=\"hljs-params\">\u9700\u8981\u8bbe\u7f6e\u6210\u4e3b\u5065\u7684\u5b57\u6bb5\u540d<\/span>) auto_increment)<\/span>;  <span class=\"hljs-meta\">#auto_increment \u662f\u9700\u8981\u5c06\u4e3b\u5065\u5b57\u6bb5\u8bbe\u7f6e\u6210\u81ea\u52a8\u589e\u957f\u7684\u5173\u952e\u5b57\uff0c\u5982\u679c\u4e3b\u5065\u4e0d\u662f\u6574\u6570\u7c7b\u578b\u6216\u8005\u4e0d\u9700\u8981\u81ea\u52a8\u589e\u957f\u7684\u65f6\u5019\u4e0d\u9700\u8981\u8be5\u5173\u952e\u5b57;\u5f53\u9700\u8981\u8bbe\u7f6e\u8054\u5408\u4e3b\u952e\u65f6\uff0c\u591a\u4e2a\u9700\u8981\u8bbe\u7f6e\u6210\u4e3b\u5065\u7684\u5b57\u6bb5\u540d\u4e4b\u95f4\u7528\u9017\u53f7\u9694\u5f00\uff0c\u800c\u4e14\u4e0d\u80fd\u4f7f\u7528\u81ea\u52a8\u589e\u957f`<\/span>\r\n\u6216\u8005\r\n\r\ncreate table \u8868\u540d(\u4e3b\u5065\u5b57\u6bb5 \u5b57\u6bb5\u7c7b\u578b primary key auto_increment,\u5b57\u6bb5\u5217\u8868);<span class=\"hljs-meta\">#\u6b64\u65b9\u6cd5\u5728\u521b\u5efa\u8054\u5408\u4e3b\u5065\u65f6\u4e0d\u53ef\u7528<\/span>\r\n<span class=\"hljs-number\">1.2<\/span>.\u5728\u5df2\u7ecf\u521b\u5efa\u597d\u7684\u8868\u4e0a\u521b\u5efa\u4e3b\u5065\uff08\u5982\u679c\u8be5\u8868\u4e2d\u5df2\u7ecf\u5b58\u5728\u6570\u636e\uff0c\u4e14\u6570\u636e\u8fdd\u53cd\u4e86\u4e3b\u952e\u7ea6\u675f\uff0c\u5219\u65e0\u6cd5\u521b\u5efa\u4e3b\u5065\uff0c\u9700\u8981\u89e3\u51b3\u6570\u636e\u51b2\u7a81\u540e\u518d\u521b\u5efa\uff09\r\nalter table \u8868\u540d <span class=\"hljs-function\"><span class=\"hljs-keyword\">add<\/span> primary <span class=\"hljs-title\">key<\/span>(<span class=\"hljs-params\">\u9700\u8981\u8bbe\u7f6e\u6210\u4e3b\u5065\u7684\u5b57\u6bb5\u540d<\/span>) auto_increment\uff1b<\/span><\/code><\/pre>\n<p><strong>2.\u521b\u5efa\u5916\u952e\u7684\u547d\u4ee4\u683c\u5f0f<\/strong><\/p>\n<pre><code class=\"hljs sql\">2.1.\u5728\u521b\u5efa\u8868\u65f6\u521b\u5efa\u5916\u952e(\u6ee1\u8db3\u521b\u5efa\u5916\u952e\u7684\u6761\u4ef6\u4e0b)\r\n<span class=\"hljs-keyword\">create<\/span> <span class=\"hljs-keyword\">table<\/span> \u8868\u540d(\u5b57\u6bb5\u5217\u8868,foreign <span class=\"hljs-keyword\">key<\/span>(\u9700\u8981\u521b\u5efa\u5916\u952e\u7ea6\u675f\u7684\u5b57\u6bb5) <span class=\"hljs-keyword\">references<\/span> \u88ab\u53c2\u7167\u8868\u7684\u8868\u540d(\u88ab\u53c2\u7167\u8868\u7684\u88ab\u53c2\u7167\u5b57\u6bb5) <span class=\"hljs-keyword\">on<\/span> <span class=\"hljs-keyword\">update<\/span> <span class=\"hljs-keyword\">cascade<\/span> <span class=\"hljs-keyword\">on<\/span> <span class=\"hljs-keyword\">delete<\/span> <span class=\"hljs-keyword\">cascade<\/span>)<span class=\"hljs-keyword\">engine<\/span>=<span class=\"hljs-keyword\">innodb<\/span>;\r\n\u5982\u679c\u5916\u952e\u9700\u8981\u5177\u6709\u552f\u4e00\u6807\u793a\u7684\u65f6\u5019\u8fd8\u53ef\u4ee5\u5728\u5916\u952e\u4e0a\u52a0\u4e0a\u4e3b\u5065\u7ea6\u675f\r\n2.2.\u5728\u5df2\u7ecf\u5b58\u5728\u7684\u8868\u4e2d\u521b\u5efa\u5916\u952e\r\n<span class=\"hljs-keyword\">alter<\/span> <span class=\"hljs-keyword\">table<\/span> \u8868\u540d <span class=\"hljs-keyword\">add<\/span> foreign <span class=\"hljs-keyword\">key<\/span>(\u5b57\u6bb5\u540d) <span class=\"hljs-keyword\">references<\/span> \u53c2\u8003\u8868\u540d(\u53c2\u8003\u5b57\u6bb5\u540d) <span class=\"hljs-keyword\">on<\/span> <span class=\"hljs-keyword\">update<\/span> casecade <span class=\"hljs-keyword\">on<\/span> <span class=\"hljs-keyword\">delete<\/span> <span class=\"hljs-keyword\">cascade<\/span>) <span class=\"hljs-keyword\">engine<\/span>=<span class=\"hljs-keyword\">innodb<\/span>;<\/code><\/pre>\n<p><strong>3.\u521b\u5efa\u7d22\u5f15\u7684\u547d\u4ee4\u683c\u5f0f<\/strong><\/p>\n<pre><code class=\"hljs perl\"><span class=\"hljs-number\">3.1<\/span>.\u521b\u5efa\u8868\u7684\u65f6\u5019\u521b\u5efa\u7d22\u5f15(\u7d22\u5f15\u53ef\u4ee5\u6709\u591a\u4e2a\uff0c\u5728\u4ee5\u4e0b\u793a\u4f8b\u4e2d\u6dfb\u52a0\u7684\u662f\u4e24\u4e2a)\r\ncreate table \u8868\u540d(\u5b57\u6bb5\u5217\u8868\uff0c<span class=\"hljs-keyword\">index<\/span>(\u5df2\u7ecf\u5b58\u5728\u5b57\u6bb5\u540d)\uff0c<span class=\"hljs-keyword\">index<\/span>(\u5df2\u7ecf\u5b58\u5728\u7684\u5b57\u6bb5\u540d));<span class=\"hljs-comment\">#\u5982\u679c\u662f\u8054\u5408\u7d22\u5f15\u7684\u591a\u4e2a\u5df2\u7ecf\u5b58\u5728\u5b57\u6bb5\u540d\u7528\uff0c\u9694\u5f00\uff0c\u8bb0\u4f4f\u4e0d\u80fd\u8de8\u5b57\u6bb5\u8bbe\u7f6e\u8054\u5408\u7d22\u5f15<\/span>\r\n\u9ed8\u8ba4\u7684\u7d22\u5f15\u540d\u548c\u5b57\u6bb5\u540d\u76f8\u540c\r\n<span class=\"hljs-number\">3.2<\/span>.\u628a\u5df2\u7ecf\u5b58\u5728\u7684\u8868\u4e2d\u7684\u5b57\u6bb5\u8bbe\u7f6e\u4e3a\u7d22\u5f15\u5b57\u6bb5\r\ncreate <span class=\"hljs-keyword\">index<\/span> \u7d22\u5f15\u540d\u79f0  on \u8868\u540d(\u5b57\u6bb5\u540d)\r\n\u7d22\u5f15\u540d\u53ef\u4ee5\u81ea\u5df1\u547d\u540d  \u4e00\u822c\u4f7f\u7528\u5b57\u6bb5\u540d\u4f5c\u4e3a\u7d22\u5f15\u540d<\/code><\/pre>\n<p>4.\u521b\u5efa\u552f\u4e00\u7d22\u5f15\u7684\u547d\u4ee4\u683c\u5f0f\u548c\u666e\u901a\u7d22\u5f15\u7684\u683c\u5f0f\u76f8\u4f3c\u53ea\u9700\u8981\u4fdd\u8bc1\u5b57\u6bb5\u8bb0\u5f55\u7684\u552f\u4e00\u6027\u5c31\u53ef\u4ee5\u4f7f\u7528unique\u5173\u952e\u5b57<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u3001\u4e3b\u952e \u7d22\u5f15 \u5173\u7cfb 1.\u4e3b\u952e\uff1a\u4e3b\u952e\u7684\u552f\u4e00\u4f5c\u7528\u5c31\u662f\u552f\u4e00\u6807\u8bc6\u8868\u4e2d\u7684\u67d0\u4e00\u884c\u6570\u636e\u3002\u5206\u4e3a\u5355\u4e00\u4e3b\u952e\u548c\u8054\u5408\u4e3b\u952e\uff1a \u5355\u4e00\u4e3b\u952e &#8230; <a title=\"mysql\u4e2d\u7684\u952e\u548c\u7d22\u5f15\" class=\"read-more\" href=\"https:\/\/cn.hostease.com\/xueyuan\/uncategorized\/mysql%e4%b8%ad%e7%9a%84%e9%94%ae%e5%92%8c%e7%b4%a2%e5%bc%95\/\" aria-label=\"\u9605\u8bfb mysql\u4e2d\u7684\u952e\u548c\u7d22\u5f15\">\u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3183","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"aioseo_notices":[],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/3183","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/comments?post=3183"}],"version-history":[{"count":1,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/3183\/revisions"}],"predecessor-version":[{"id":3184,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/3183\/revisions\/3184"}],"wp:attachment":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/media?parent=3183"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/categories?post=3183"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/tags?post=3183"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}