{"id":7496,"date":"2024-11-14T15:36:26","date_gmt":"2024-11-14T07:36:26","guid":{"rendered":"https:\/\/fwq.ai\/blog\/7496\/"},"modified":"2024-11-14T15:36:26","modified_gmt":"2024-11-14T07:36:26","slug":"%e4%b8%ba%e4%bb%80%e4%b9%88-mysql-%e7%9a%84-where-%e8%af%ad%e5%8f%a5%e6%97%a0%e6%b3%95%e7%9b%b4%e6%8e%a5%e7%94%a8-%e6%a3%80%e7%b4%a2-bool-%e5%80%bc%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/7496\/","title":{"rendered":"\u4e3a\u4ec0\u4e48 MySQL \u7684 where \u8bed\u53e5\u65e0\u6cd5\u76f4\u63a5\u7528 `=` \u68c0\u7d22 bool \u503c\uff1f"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/001\/246\/273\/173090163472651.jpg\" class=\"aligncenter\" title=\"\u4e3a\u4ec0\u4e48 MySQL \u7684 where \u8bed\u53e5\u65e0\u6cd5\u76f4\u63a5\u7528 `=` \u68c0\u7d22 bool \u503c\uff1f\u63d2\u56fe\" alt=\"\u4e3a\u4ec0\u4e48 MySQL \u7684 where \u8bed\u53e5\u65e0\u6cd5\u76f4\u63a5\u7528 `=` \u68c0\u7d22 bool \u503c\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong> \u7684 where \u4e4b\u95f4\u65e0\u6cd5\u4f7f\u7528 = \u68c0\u7d22 bool \u503c\u7684\u539f\u56e0<\/strong><\/p>\n<p>\u5728 mysql \u4e2d\uff0cenum \u7c7b\u578b\u7684\u7d22\u5f15\u662f\u4ece 1 \u5f00\u59cb\u7684\uff0c\u8fd9\u610f\u5473\u7740\u5728\u8868\u7ed3\u6784\u4e2d\u5b9a\u4e49\u7684 is_svddb \u548c is_svddb_match \u5217\u4e2d\u7684 true \u548c false \u503c\u5bf9\u5e94\u4e8e\u7d22\u5f15\u503c 1 \u548c 2\u3002<\/p>\n<p>\u56e0\u6b64\uff0c\u5728\u67e5\u8be2\u4e2d\u4f7f\u7528 where is_svddb_match = false\uff0cmysql \u5b9e\u9645\u4e0a\u662f\u5728\u6bd4\u8f83 is_svddb_match \u5217\u7684\u7d22\u5f15\u503c\u662f\u5426\u7b49\u4e8e 0\uff0c\u800c\u4e0d\u662f 2\uff0c\u56e0\u6b64\u8fd4\u56de 0 \u884c\u7ed3\u679c\u3002<\/p>\n<p>\u89e3\u51b3\u65b9\u6cd5\u662f\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u6bd4\u8f83 enum \u503c\uff1a<\/p>\n<pre>where is_svddb_match = 'false'<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u6216\u8005\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u6bd4\u8f83 enum \u503c\uff1a<\/p>\n<pre>where is_svddb_match = 2<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u56e0\u4e3a false \u5bf9\u5e94\u4e8e\u7d22\u5f15\u503c 2\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u4e3a\u4ec0\u4e48 MySQL \u7684 where \u8bed\u53e5\u65e0\u6cd5\u76f4\u63a5\u7528 `=` \u68c0\u7d22 bool \u503c\uff1f\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7684 where \u4e4b\u95f4\u65e0\u6cd5\u4f7f\u7528 = \u68c0\u7d22 bool \u503c\u7684\u539f\u56e0 \u5728 mysql \u4e2d\uff0cenum \u7c7b\u578b\u7684\u7d22\u5f15\u662f\u4ece 1 \u5f00\u59cb\u7684\uff0c\u8fd9\u610f\u5473\u7740\u5728\u8868\u7ed3\u6784\u4e2d\u5b9a\u4e49\u7684 is_svddb \u548c is_svddb_match \u5217\u4e2d\u7684 true \u548c false \u503c\u5bf9\u5e94\u4e8e\u7d22\u5f15\u503c 1 \u548c 2\u3002 \u56e0\u6b64\uff0c\u5728\u67e5\u8be2\u4e2d\u4f7f\u7528 where is_svddb_match = false\uff0cmysql \u5b9e\u9645\u4e0a\u662f\u5728\u6bd4\u8f83 is_svddb_match \u5217\u7684\u7d22\u5f15\u503c\u662f\u5426\u7b49\u4e8e 0\uff0c\u800c\u4e0d\u662f 2\uff0c\u56e0\u6b64\u8fd4\u56de 0 \u884c\u7ed3\u679c\u3002 \u89e3\u51b3\u65b9\u6cd5\u662f\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u6bd4\u8f83 enum \u503c\uff1a where is_svddb_match = &#8216;false&#8217; \u767b\u5f55\u540e\u590d\u5236 \u6216\u8005\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u6bd4\u8f83 enum \u503c\uff1a where is_svddb_match = 2 \u767b\u5f55\u540e\u590d\u5236 \u56e0\u4e3a false \u5bf9\u5e94\u4e8e\u7d22\u5f15\u503c [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-7496","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/7496","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=7496"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/7496\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=7496"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=7496"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=7496"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}