{"id":200766,"date":"2025-05-06T10:59:41","date_gmt":"2025-05-06T02:59:41","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200766\/"},"modified":"2025-05-06T10:59:41","modified_gmt":"2025-05-06T02:59:41","slug":"mysql-%e4%b8%ad-is-true-%e5%92%8c-true-%e4%b8%ba%e4%bb%80%e4%b9%88%e4%bc%9a%e8%bf%94%e5%9b%9e%e4%b8%8d%e5%90%8c%e7%9a%84%e7%bb%93%e6%9e%9c%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200766\/","title":{"rendered":"MySQL \u4e2d IS TRUE \u548c = TRUE \u4e3a\u4ec0\u4e48\u4f1a\u8fd4\u56de\u4e0d\u540c\u7684\u7ed3\u679c\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>MySQL \u4e2d IS TRUE \u548c = TRUE \u4e3a\u4ec0\u4e48\u4f1a\u8fd4\u56de\u4e0d\u540c\u7684\u7ed3\u679c\uff1f<\/h1>\n<p>\u6765\u5230\u4e3b\u673a\u5b9d\u8d1d\u7684\u5927\u5bb6\uff0c\u76f8\u4fe1\u90fd\u662f\u7f16\u7a0b\u5b66\u4e60\u7231\u597d\u8005\uff0c\u5e0c\u671b\u5728\u8fd9\u91cc\u5b66\u4e60\u6570\u636e\u5e93\u76f8\u5173\u7f16\u7a0b\u77e5\u8bc6\u3002\u4e0b\u9762\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u5e26\u5927\u5bb6\u804a\u804a\u300aMySQL \u4e2d IS TRUE \u548c = TRUE \u4e3a\u4ec0\u4e48\u4f1a\u8fd4\u56de\u4e0d\u540c\u7684\u7ed3\u679c\uff1f\u300b\uff0c\u4ecb\u7ecd\u4e00\u4e0b\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241114\/173155343067356896bb71f.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>mysql \u4e2d is true \u548c = true \u7ed3\u679c\u4e0d\u540c\u7684\u539f\u56e0<\/strong><\/p>\n<p>\u5728 mysql \u4e2d\uff0cis true \u548c = true \u8fd4\u56de\u4e0d\u540c\u7684\u7ed3\u679c\u3002\u8fd9\u80cc\u540e\u7684\u539f\u56e0\u5728\u4e8e\u8fd0\u7b97\u7b26\u7684\u4e0d\u540c\u3002<\/p>\n<p><strong>= \u8fd0\u7b97\u7b26<\/strong><\/p>\n<p>= \u8fd0\u7b97\u7b26\u8fdb\u884c\u7684\u662f\u6570\u503c\u6bd4\u8f83\u3002\u5728 mysql \u4e2d\uff0ctrue \u6620\u5c04\u4e3a\u6574\u578b\u503c 1\u3002\u56e0\u6b64\uff0cis_deleted = true \u5c06\u6bd4\u8f83 is_deleted \u5217\u7684\u503c\u548c 1\u3002<\/p>\n<p><strong>is true \u8fd0\u7b97\u7b26<\/strong><\/p>\n<p>\u53e6\u4e00\u65b9\u9762\uff0cis true \u8fd0\u7b97\u7b26\u6267\u884c\u771f\u5047\u5224\u65ad\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u4efb\u4f55\u975e\u96f6\u503c\u90fd\u5c06\u88ab\u89c6\u4e3a\u771f\uff0c\u5305\u62ec 1\u3001127 \u548c 255\u3002<\/p>\n<p><strong>\u793a\u4f8b<\/strong><\/p>\n<pre>select * from `user` where is_deleted is true;<\/pre>\n<p>\u6b64\u67e5\u8be2\u5c06\u8fd4\u56de\u6240\u6709 is_deleted \u5217\u4e0d\u4e3a\u96f6\u7684\u884c\u3002<\/p>\n<pre>SELECT * FROM `user` WHERE is_deleted = TRUE;<\/pre>\n<p>\u6b64\u67e5\u8be2\u4ec5\u8fd4\u56de is_deleted \u5217\u503c\u4e3a 1 \u7684\u884c\u3002<\/p>\n<p>\u56e0\u6b64\uff0c\u7531\u4e8e is_deleted \u5217\u7684\u503c\u4e3a 127\uff0cis true \u67e5\u8be2\u5c06\u8fd4\u56de\u6240\u6709\u884c\uff0c\u800c = true \u67e5\u8be2\u5c06\u8fd4\u56de\u7a7a\u7ed3\u679c\u3002<\/p>\n<p>\u4eca\u5929\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff1b\u5173\u4e8e\u6570\u636e\u5e93\u7684\u6280\u672f\u77e5\u8bc6\u6211\u4eec\u4f1a\u4e00\u70b9\u70b9\u6df1\u5165\u4ecb\u7ecd\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\uff0c\u4e00\u8d77\u5b66\u4e60\u7f16\u7a0b~<\/p>\n<dl>\n<dt>\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>MySQL \u4e2d IS TRUE &#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":[101],"tags":[],"class_list":["post-200766","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200766","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=200766"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200766\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=200766"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=200766"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=200766"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}