{"id":204814,"date":"2025-05-29T14:36:06","date_gmt":"2025-05-29T06:36:06","guid":{"rendered":"https:\/\/server.hk\/cnblog\/204814\/"},"modified":"2025-05-29T14:36:06","modified_gmt":"2025-05-29T06:36:06","slug":"mysql-%e4%b8%ad%e7%9a%84%e7%9b%b8%e7%ad%89%e5%88%a4%e6%96%ad%e4%b8%ba%e4%bd%95%e6%9c%89%e6%97%b6%e4%bc%9a%e8%a1%a8%e7%8e%b0%e5%87%ba%e6%a8%a1%e7%b3%8a%e5%8c%b9%e9%85%8d%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/204814\/","title":{"rendered":"MySQL \u4e2d\u7684\u76f8\u7b49\u5224\u65ad\u4e3a\u4f55\u6709\u65f6\u4f1a\u8868\u73b0\u51fa\u201c\u6a21\u7cca\u201d\u5339\u914d\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>MySQL \u4e2d\u7684\u76f8\u7b49\u5224\u65ad\u4e3a\u4f55\u6709\u65f6\u4f1a\u8868\u73b0\u51fa\u201c\u6a21\u7cca\u201d\u5339\u914d\uff1f<\/h1>\n<p>\u201c\u7eb5\u6709\u75be\u98ce\u6765\uff0c\u4eba\u751f\u4e0d\u8a00\u5f03\u201d\uff0c\u8fd9\u53e5\u8bdd\u9001\u7ed9\u6b63\u5728\u5b66\u4e60\u7684\u670b\u53cb\u4eec\uff0c\u4e5f\u5e0c\u671b\u5728\u9605\u8bfb\u672c\u6587<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300aMySQL \u4e2d\u7684\u76f8\u7b49\u5224\u65ad\u4e3a\u4f55\u6709\u65f6\u4f1a\u8868\u73b0\u51fa\u201c\u6a21\u7cca\u201d\u5339\u914d\uff1f\u300b<\/span>\u540e\uff0c\u80fd\u591f\u771f\u7684\u5e2e\u52a9\u5230\u5927\u5bb6\u3002\u6211\u4e5f\u4f1a\u5728\u540e\u7eed\u7684\u6587\u7ae0\u4e2d\uff0c\u9646\u7eed\u66f4\u65b0<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\u76f8\u5173\u7684\u6280\u672f\u6587\u7ae0\uff0c\u6709\u597d\u7684\u5efa\u8bae\u6b22\u8fce\u5927\u5bb6\u5728\u8bc4\u8bba\u7559\u8a00\uff0c\u975e\u5e38\u611f\u8c22\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241117\/173180507067393f8e08e8a.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>MySQL \u4e2d\u4f7f\u7528\u76f8\u7b49\u5224\u65ad\u4e3a\u4ec0\u4e48\u4f1a\u770b\u4f3c\u201c\u6a21\u7cca\u201d\u5339\u914d\uff1f<\/strong><\/p>\n<p>\u5728 MySQL \u4e2d\uff0c\u4f7f\u7528\u76f8\u7b49\u5224\u65ad\u901a\u5e38\u4f1a\u83b7\u5f97\u7cbe\u786e\u7684\u5339\u914d\u7ed3\u679c\u3002\u7136\u800c\uff0c\u6709\u65f6\u60a8\u53ef\u80fd\u4f1a\u9047\u5230\u7c7b\u4f3c\u4e8e\u201c\u6a21\u7cca\u201d\u5339\u914d\u7684\u7ed3\u679c\u3002\u8fd9\u53ef\u80fd\u662f\u7531\u4e8e\u4ee5\u4e0b\u539f\u56e0\uff1a<\/p>\n<p><strong>\u5b57\u6bb5\u7c7b\u578b\u4e0d\u5339\u914d<\/strong><\/p>\n<p>\u68c0\u67e5\u53c2\u4e0e\u6bd4\u8f83\u7684\u5b57\u6bb5\u7c7b\u578b\u662f\u5426\u76f8\u5339\u914d\u3002\u4f8b\u5982\uff0c\u5982\u679c\u7b2c\u4e00\u4e2a\u5b57\u6bb5\u4e3a\u5b57\u7b26\u4e32\u7c7b\u578b\uff0c\u7b2c\u4e8c\u4e2a\u5b57\u6bb5\u4e3a\u6570\u5b57\u7c7b\u578b\uff0c\u5219 MySQL \u53ef\u80fd\u4f1a\u8fdb\u884c\u9690\u5f0f\u7c7b\u578b\u8f6c\u6362\u3002\u8fd9\u53ef\u80fd\u4f1a\u5bfc\u81f4\u610f\u60f3\u4e0d\u5230\u7684\u5339\u914d\u7ed3\u679c\u3002<\/p>\n<p><strong>\u4f7f\u7528 != \u8fd0\u7b97\u7b26<\/strong><\/p>\n<p>!= \u8fd0\u7b97\u7b26\u7528\u4e8e\u5224\u65ad\u4e0d\u76f8\u7b49\u7684\u6761\u4ef6\u3002\u5982\u679c\u60a8\u610f\u5916\u4f7f\u7528\u4e86 != \u8fd0\u7b97\u7b26\uff0c\u5b83\u5c06\u8fd4\u56de\u4e0e\u76f8\u7b49\u5224\u65ad\u76f8\u53cd\u7684\u7ed3\u679c\uff0c\u4ece\u800c\u53ef\u80fd\u5bfc\u81f4\u7c7b\u4f3c\u6a21\u7cca\u5339\u914d\u7684\u67e5\u8be2\u7ed3\u679c\u3002<\/p>\n<p><strong>\u67e5\u8be2\u4f18\u5316<\/strong><\/p>\n<p>MySQL \u53ef\u80fd\u4f1a\u5bf9\u67e5\u8be2\u8fdb\u884c\u4f18\u5316\uff0c\u4ee5\u63d0\u9ad8\u6027\u80fd\u3002\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u8fd9\u53ef\u80fd\u4f1a\u5bfc\u81f4\u67e5\u8be2\u7ed3\u679c\u4e0e\u9884\u671f\u7565\u6709\u4e0d\u540c\u3002\u4f8b\u5982\uff0cMySQL \u53ef\u80fd\u4f7f\u7528\u7d22\u5f15\u626b\u63cf\u6765\u66ff\u4ee3\u5168\u8868\u626b\u63cf\uff0c\u8fd9\u53ef\u80fd\u4f1a\u5bfc\u81f4\u4e0d\u51c6\u786e\u7684\u5339\u914d\u3002<\/p>\n<p><strong>\u6570\u636e\u95ee\u9898<\/strong><\/p>\n<p>\u786e\u4fdd\u67e5\u8be2\u4e2d\u63d0\u4f9b\u7684\u6570\u636e\u51c6\u786e\u65e0\u8bef\u3002\u6709\u65f6\uff0c\u6570\u636e\u4e2d\u7684\u4e0d\u4e00\u81f4\u6216\u9519\u8bef\u53ef\u80fd\u4f1a\u5bfc\u81f4\u610f\u60f3\u4e0d\u5230\u7684\u67e5\u8be2\u7ed3\u679c\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4e24\u4e2a\u5b57\u6bb5\u5e94\u8be5\u76f8\u7b49\u4f46\u5b9e\u9645\u4e0a\u4e0d\u540c\uff0c\u5219\u53ef\u80fd\u4f1a\u8fd4\u56de\u6a21\u7cca\u5339\u914d\u7684\u7ed3\u679c\u3002<\/p>\n<p><strong>\u89e3\u51b3\u65b9\u6cd5\uff1a<\/strong><\/p>\n<p>\u4e3a\u4e86\u907f\u514d\u6b64\u7c7b\u95ee\u9898\uff0c\u8bf7\u786e\u4fdd\uff1a<\/p>\n<ul>\n<li><strong>\u5b57\u6bb5\u7c7b\u578b\u5339\u914d\u3002<\/strong><\/li>\n<li><strong>\u6b63\u786e\u4f7f\u7528\u7b49\u4e8e\u53f7 (=) \u548c\u4e0d\u7b49\u4e8e\u53f7 (!=) \u8fd0\u7b97\u7b26\u3002<\/strong><\/li>\n<li><strong>\u68c0\u67e5\u67e5\u8be2\u4f18\u5316\u8bbe\u7f6e\u4ee5\u786e\u4fdd\u4e0d\u4f1a\u5f71\u54cd\u7ed3\u679c\u7684\u51c6\u786e\u6027\u3002<\/strong><\/li>\n<li><strong>\u9a8c\u8bc1\u67e5\u8be2\u4e2d\u63d0\u4f9b\u7684\u6570\u636e\u7684\u5b8c\u6574\u6027\u548c\u51c6\u786e\u6027\u3002<\/strong><\/li>\n<\/ul>\n<p>\u7ec8\u4e8e\u4ecb\u7ecd\u5b8c\u5566\uff01\u5c0f\u4f19\u4f34\u4eec\uff0c\u8fd9\u7bc7\u5173\u4e8e\u300aMySQL \u4e2d\u7684\u76f8\u7b49\u5224\u65ad\u4e3a\u4f55\u6709\u65f6\u4f1a\u8868\u73b0\u51fa\u201c\u6a21\u7cca\u201d\u5339\u914d\uff1f\u300b\u7684\u4ecb\u7ecd\u5e94\u8be5\u8ba9\u4f60\u6536\u83b7\u591a\u591a\u4e86\u5427\uff01\u6b22\u8fce\u5927\u5bb6\u6536\u85cf\u6216\u5206\u4eab\u7ed9\u66f4\u591a\u9700\u8981\u5b66\u4e60\u7684\u670b\u53cb\u5427~\u516c\u4f17\u53f7\u4e5f\u4f1a\u53d1\u5e03\u6587\u7ae0\u76f8\u5173\u77e5\u8bc6\uff0c\u5feb\u6765\u5173\u6ce8\u5427\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MySQL \u4e2d\u7684\u76f8\u7b49\u5224\u65ad\u4e3a\u4f55\u6709\u65f6&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-204814","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/204814","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=204814"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/204814\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=204814"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=204814"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=204814"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}