{"id":160779,"date":"2024-11-04T00:56:30","date_gmt":"2024-11-03T16:56:30","guid":{"rendered":"https:\/\/server.hk\/cnblog\/160779\/"},"modified":"2024-11-04T00:56:31","modified_gmt":"2024-11-03T16:56:31","slug":"%e8%b3%87%e6%96%99%e5%ba%ab%e6%95%99%e7%a8%8b%ef%bc%9amysql-%e9%82%8f%e8%bc%af%e9%81%8b%e7%ae%97%e7%ac%a6","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/160779\/","title":{"rendered":"\u8cc7\u6599\u5eab\u6559\u7a0b\uff1aMySQL \u908f\u8f2f\u904b\u7b97\u7b26"},"content":{"rendered":"<h1 id=\"%e8%b3%87%e6%96%99%e5%ba%ab%e6%95%99%e7%a8%8b%ef%bc%9amysql-%e9%82%8f%e8%bc%af%e9%81%8b%e7%ae%97%e7%ac%a6-zYDOHZAgfz\">\u8cc7\u6599\u5eab\u6559\u7a0b\uff1aMySQL \u908f\u8f2f\u904b\u7b97\u7b26<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u908f\u8f2f\u904b\u7b97\u7b26\u662f\u7528\u4f86\u9032\u884c\u689d\u4ef6\u5224\u65b7\u7684\u91cd\u8981\u5de5\u5177\u3002MySQL \u4f5c\u70ba\u4e00\u500b\u6d41\u884c\u7684\u958b\u6e90\u8cc7\u6599\u5eab\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u908f\u8f2f\u904b\u7b97\u7b26\uff0c\u5e6b\u52a9\u7528\u6236\u5728\u67e5\u8a62\u8cc7\u6599\u6642\u9032\u884c\u66f4\u7cbe\u78ba\u7684\u7be9\u9078\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e MySQL \u4e2d\u7684\u908f\u8f2f\u904b\u7b97\u7b26\uff0c\u5305\u62ec\u5176\u7528\u6cd5\u3001\u7bc4\u4f8b\u53ca\u6ce8\u610f\u4e8b\u9805\u3002<\/p>\n<h2 id=\"%e9%82%8f%e8%bc%af%e9%81%8b%e7%ae%97%e7%ac%a6%e6%a6%82%e8%bf%b0-zYDOHZAgfz\">\u908f\u8f2f\u904b\u7b97\u7b26\u6982\u8ff0<\/h2>\n<p>\u908f\u8f2f\u904b\u7b97\u7b26\u4e3b\u8981\u7528\u65bc SQL \u67e5\u8a62\u4e2d\u7684 WHERE \u5b50\u53e5\uff0c\u5e6b\u52a9\u7528\u6236\u6839\u64da\u591a\u500b\u689d\u4ef6\u904e\u6ffe\u8cc7\u6599\u3002MySQL \u4e2d\u5e38\u7528\u7684\u908f\u8f2f\u904b\u7b97\u7b26\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><code>AND<\/code><\/li>\n<li><code>OR<\/code><\/li>\n<li><code>NOT<\/code><\/li>\n<\/ul>\n<h2 id=\"1-and-%e9%81%8b%e7%ae%97%e7%ac%a6-zYDOHZAgfz\">1. AND \u904b\u7b97\u7b26<\/h2>\n<p><code>AND<\/code> \u904b\u7b97\u7b26\u7528\u65bc\u540c\u6642\u6eff\u8db3\u591a\u500b\u689d\u4ef6\u7684\u60c5\u6cc1\u3002\u53ea\u6709\u7576\u6240\u6709\u689d\u4ef6\u90fd\u70ba\u771f\u6642\uff0c\u6574\u500b\u8868\u9054\u5f0f\u624d\u6703\u8fd4\u56de\u771f\u3002<\/p>\n<h3 id=\"%e7%af%84%e4%be%8b-zYDOHZAgfz\">\u7bc4\u4f8b<\/h3>\n<pre><code>SELECT * FROM users WHERE age &gt; 18 AND city = 'Hong Kong';<\/code><\/pre>\n<p>\u4e0a\u8ff0\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u5e74\u9f61\u5927\u65bc 18 \u6b72\u4e14\u5c45\u4f4f\u5728\u9999\u6e2f\u7684\u7528\u6236\u8cc7\u6599\u3002<\/p>\n<h2 id=\"2-or-%e9%81%8b%e7%ae%97%e7%ac%a6-zYDOHZAgfz\">2. OR \u904b\u7b97\u7b26<\/h2>\n<p><code>OR<\/code> \u904b\u7b97\u7b26\u7528\u65bc\u6eff\u8db3\u4efb\u4e00\u689d\u4ef6\u7684\u60c5\u6cc1\u3002\u53ea\u8981\u6709\u4e00\u500b\u689d\u4ef6\u70ba\u771f\uff0c\u6574\u500b\u8868\u9054\u5f0f\u5c31\u6703\u8fd4\u56de\u771f\u3002<\/p>\n<h3 id=\"%e7%af%84%e4%be%8b-zYDOHZAgfz\">\u7bc4\u4f8b<\/h3>\n<pre><code>SELECT * FROM products WHERE category = 'Electronics' OR category = 'Books';<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u985e\u5225\u70ba\u96fb\u5b50\u7522\u54c1\u6216\u66f8\u7c4d\u7684\u7522\u54c1\u8cc7\u6599\u3002<\/p>\n<h2 id=\"3-not-%e9%81%8b%e7%ae%97%e7%ac%a6-zYDOHZAgfz\">3. NOT \u904b\u7b97\u7b26<\/h2>\n<p><code>NOT<\/code> \u904b\u7b97\u7b26\u7528\u65bc\u53cd\u8f49\u689d\u4ef6\u7684\u7d50\u679c\u3002\u7576\u689d\u4ef6\u70ba\u771f\u6642\uff0c<code>NOT<\/code> \u5c07\u5176\u8f49\u70ba\u5047\uff0c\u53cd\u4e4b\u4ea6\u7136\u3002<\/p>\n<h3 id=\"%e7%af%84%e4%be%8b-zYDOHZAgfz\">\u7bc4\u4f8b<\/h3>\n<pre><code>SELECT * FROM employees WHERE NOT department = 'Sales';<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u4e0d\u5728\u92b7\u552e\u90e8\u9580\u7684\u54e1\u5de5\u8cc7\u6599\u3002<\/p>\n<h2 id=\"%e9%82%8f%e8%bc%af%e9%81%8b%e7%ae%97%e7%ac%a6%e7%9a%84%e7%b5%84%e5%90%88%e4%bd%bf%e7%94%a8-zYDOHZAgfz\">\u908f\u8f2f\u904b\u7b97\u7b26\u7684\u7d44\u5408\u4f7f\u7528<\/h2>\n<p>\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u908f\u8f2f\u904b\u7b97\u7b26\u53ef\u4ee5\u7d44\u5408\u4f7f\u7528\uff0c\u4ee5\u6eff\u8db3\u66f4\u8907\u96dc\u7684\u67e5\u8a62\u9700\u6c42\u3002\u7576\u4f7f\u7528\u591a\u500b\u908f\u8f2f\u904b\u7b97\u7b26\u6642\uff0c\u5efa\u8b70\u4f7f\u7528\u62ec\u865f\u4f86\u660e\u78ba\u904b\u7b97\u7684\u512a\u5148\u9806\u5e8f\u3002<\/p>\n<h3 id=\"%e7%af%84%e4%be%8b-zYDOHZAgfz\">\u7bc4\u4f8b<\/h3>\n<pre><code>SELECT * FROM orders WHERE (status = 'shipped' OR status = 'pending') AND customer_id = 123;<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u72c0\u614b\u70ba\u5df2\u767c\u8ca8\u6216\u5f85\u8655\u7406\uff0c\u4e14\u5ba2\u6236 ID \u70ba 123 \u7684\u8a02\u55ae\u8cc7\u6599\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-zYDOHZAgfz\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li>\u5728\u4f7f\u7528\u908f\u8f2f\u904b\u7b97\u7b26\u6642\uff0c\u6ce8\u610f SQL \u7684\u5927\u5c0f\u5beb\u4e0d\u654f\u611f\uff0c\u4f46\u5efa\u8b70\u4f7f\u7528\u5927\u5beb\u4ee5\u63d0\u9ad8\u53ef\u8b80\u6027\u3002<\/li>\n<li>\u4f7f\u7528\u62ec\u865f\u53ef\u4ee5\u907f\u514d\u904b\u7b97\u512a\u5148\u9806\u5e8f\u7684\u6df7\u6dc6\uff0c\u7279\u5225\u662f\u5728\u8907\u96dc\u67e5\u8a62\u4e2d\u3002<\/li>\n<li>\u904e\u591a\u7684\u689d\u4ef6\u53ef\u80fd\u6703\u5f71\u97ff\u67e5\u8a62\u6027\u80fd\uff0c\u61c9\u6839\u64da\u5be6\u969b\u9700\u6c42\u9032\u884c\u5408\u7406\u8a2d\u8a08\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-zYDOHZAgfz\">\u7e3d\u7d50<\/h2>\n<p>MySQL \u7684\u908f\u8f2f\u904b\u7b97\u7b26\u662f\u9032\u884c\u8cc7\u6599\u67e5\u8a62\u6642\u4e0d\u53ef\u6216\u7f3a\u7684\u5de5\u5177\u3002\u900f\u904e\u5408\u7406\u4f7f\u7528 <code>AND<\/code>\u3001<code>OR<\/code> \u548c <code>NOT<\/code> \u904b\u7b97\u7b26\uff0c\u7528\u6236\u53ef\u4ee5\u9748\u6d3b\u5730\u7be9\u9078\u51fa\u6240\u9700\u7684\u8cc7\u6599\u3002\u7121\u8ad6\u662f\u5728\u958b\u767c\u61c9\u7528\u7a0b\u5f0f\u9084\u662f\u9032\u884c\u6578\u64da\u5206\u6790\uff0c\u638c\u63e1\u9019\u4e9b\u904b\u7b97\u7b26\u7684\u4f7f\u7528\u65b9\u6cd5\u90fd\u5c07\u5927\u5927\u63d0\u9ad8\u5de5\u4f5c\u6548\u7387\u3002\u5982\u679c\u60a8\u9700\u8981\u7a69\u5b9a\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u670d\u52d9\u4f86\u652f\u63f4\u60a8\u7684\u8cc7\u6599\u5eab\u64cd\u4f5c\uff0c\u8acb\u8003\u616e\u6211\u5011\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u8b93\u60a8\u7684\u696d\u52d9\u904b\u884c\u66f4\u52a0\u9806\u66a2\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22 MySQL \u4e2d\u7684\u908f\u8f2f\u904b\u7b97\u7b26\uff0c\u5b78\u7fd2\u5982\u4f55\u6709\u6548\u5730\u67e5\u8a62\u548c\u7ba1\u7406\u8cc7\u6599\u5eab\uff0c\u63d0\u5347\u60a8\u7684\u8cc7\u6599\u5eab\u6280\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-160779","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160779","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=160779"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160779\/revisions"}],"predecessor-version":[{"id":160780,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160779\/revisions\/160780"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=160779"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=160779"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=160779"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}