{"id":26519,"date":"2024-11-24T12:49:34","date_gmt":"2024-11-24T04:49:34","guid":{"rendered":"https:\/\/fwq.ai\/blog\/26519\/"},"modified":"2024-11-24T12:49:34","modified_gmt":"2024-11-24T04:49:34","slug":"mysql-%e9%bb%98%e8%ae%a4%e5%80%bc%e8%ae%be%e7%bd%ae%ef%bc%9a%e6%95%b0%e5%ad%97%e7%b1%bb%e5%9e%8b%e5%92%8c%e5%ad%97%e7%ac%a6%e4%b8%b2%e7%b1%bb%e5%9e%8b%e5%ad%97%e6%ae%b5%e5%a6%82%e4%bd%95%e5%8c%ba-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/26519\/","title":{"rendered":"MySQL \u9ed8\u8ba4\u503c\u8bbe\u7f6e\uff1a\u6570\u5b57\u7c7b\u578b\u548c\u5b57\u7b26\u4e32\u7c7b\u578b\u5b57\u6bb5\u5982\u4f55\u533a\u5206\uff1f"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/001\/246\/273\/173097275591942.jpg\" class=\"aligncenter\" title=\"MySQL \u9ed8\u8ba4\u503c\u8bbe\u7f6e\uff1a\u6570\u5b57\u7c7b\u578b\u548c\u5b57\u7b26\u4e32\u7c7b\u578b\u5b57\u6bb5\u5982\u4f55\u533a\u5206\uff1f\u63d2\u56fe\" alt=\"MySQL \u9ed8\u8ba4\u503c\u8bbe\u7f6e\uff1a\u6570\u5b57\u7c7b\u578b\u548c\u5b57\u7b26\u4e32\u7c7b\u578b\u5b57\u6bb5\u5982\u4f55\u533a\u5206\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong> \u8bed\u6cd5\u4e2d\u7684\u9ed8\u8ba4\u503c\u8bbe\u7f6e<\/strong><\/p>\n<p>\u5728 mysql \u4e2d\u8bbe\u7f6e\u5b57\u6bb5\u7684\u9ed8\u8ba4\u503c\u65f6\uff0c\u662f\u5426\u9700\u8981\u52a0\u5f15\u53f7\u53d6\u51b3\u4e8e\u5b57\u6bb5\u7684\u6570\u636e\u7c7b\u578b\u3002\u5b57\u7b26\u4e32\u7c7b\u578b\u5b57\u6bb5\u9700\u8981\u52a0\u5f15\u53f7\uff0c\u800c\u6570\u5b57\u7c7b\u578b\u5b57\u6bb5\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002<\/p>\n<p><strong>\u4f8b\u5b50\uff1a<\/strong><\/p>\n<ul>\n<li>\u8981\u8bbe\u7f6e\u4e00\u4e2a bigint unsigned \u7c7b\u578b\u5b57\u6bb5\u7684\u9ed8\u8ba4\u503c\u4e3a 3600\uff0c\u6b63\u786e\u7684\u8bed\u6cd5\u5e94\u8be5\u662f\uff1a<\/li>\n<\/ul>\n<pre>alter table `qra_works` add `upgraded_time` bigint unsigned not null default 3600 after `created_time`;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\uff0c\u56e0\u4e3a bigint unsigned \u662f\u6570\u5b57\u7c7b\u578b\u3002<\/p>\n<ul>\n<li>\u8981\u8bbe\u7f6e\u4e00\u4e2a char(6) \u7c7b\u578b\u5b57\u6bb5\u7684\u9ed8\u8ba4\u503c\u4e3a &#8220;3600&#8221;\uff0c\u6b63\u786e\u7684\u8bed\u6cd5\u5e94\u8be5\u662f\uff1a<\/li>\n<\/ul>\n<pre>ALTER TABLE `qra_works` ADD `upgraded_time` CHAR(6) NOT NULL DEFAULT '3600' AFTER `created_time`;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u9700\u8981\u52a0\u5f15\u53f7\uff0c\u56e0\u4e3a char(6) \u662f\u5b57\u7b26\u4e32\u7c7b\u578b\u3002<\/p>\n<p>\u8bb0\u4f4f\uff0c\u5982\u679c\u5b57\u6bb5\u7684\u6570\u636e\u7c7b\u578b\u662f\u6570\u5b57\uff0c\u5219\u5728\u8bbe\u7f6e\u9ed8\u8ba4\u503c\u65f6\u4e0d\u8981\u52a0\u5f15\u53f7\uff1b\u5982\u679c\u5b57\u6bb5\u7684\u6570\u636e\u7c7b\u578b\u662f\u5b57\u7b26\u4e32\uff0c\u5219\u9700\u8981\u52a0\u5f15\u53f7\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fMySQL \u9ed8\u8ba4\u503c\u8bbe\u7f6e\uff1a\u6570\u5b57\u7c7b\u578b\u548c\u5b57\u7b26\u4e32\u7c7b\u578b\u5b57\u6bb5\u5982\u4f55\u533a\u5206\uff1f\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8bed\u6cd5\u4e2d\u7684\u9ed8\u8ba4\u503c\u8bbe\u7f6e \u5728 mysql \u4e2d\u8bbe\u7f6e\u5b57\u6bb5\u7684\u9ed8\u8ba4\u503c\u65f6\uff0c\u662f\u5426\u9700\u8981\u52a0\u5f15\u53f7\u53d6\u51b3\u4e8e\u5b57\u6bb5\u7684\u6570\u636e\u7c7b\u578b\u3002\u5b57\u7b26\u4e32\u7c7b\u578b\u5b57\u6bb5\u9700\u8981\u52a0\u5f15\u53f7\uff0c\u800c\u6570\u5b57\u7c7b\u578b\u5b57\u6bb5\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002 \u4f8b\u5b50\uff1a \u8981\u8bbe\u7f6e\u4e00\u4e2a bigint unsigned \u7c7b\u578b\u5b57\u6bb5\u7684\u9ed8\u8ba4\u503c\u4e3a 3600\uff0c\u6b63\u786e\u7684\u8bed\u6cd5\u5e94\u8be5\u662f\uff1a alter table `qra_works` add `upgraded_time` bigint unsigned not null default 3600 after `created_time`; \u767b\u5f55\u540e\u590d\u5236 \u4e0d\u9700\u8981\u52a0\u5f15\u53f7\uff0c\u56e0\u4e3a bigint unsigned \u662f\u6570\u5b57\u7c7b\u578b\u3002 \u8981\u8bbe\u7f6e\u4e00\u4e2a char(6) \u7c7b\u578b\u5b57\u6bb5\u7684\u9ed8\u8ba4\u503c\u4e3a &#8220;3600&#8221;\uff0c\u6b63\u786e\u7684\u8bed\u6cd5\u5e94\u8be5\u662f\uff1a ALTER TABLE `qra_works` ADD `upgraded_time` CHAR(6) NOT NULL DEFAULT &#8216;3600&#8217; AFTER `created_time`; \u767b\u5f55\u540e\u590d\u5236 \u9700\u8981\u52a0\u5f15\u53f7\uff0c\u56e0\u4e3a char(6) \u662f\u5b57\u7b26\u4e32\u7c7b\u578b\u3002 \u8bb0\u4f4f\uff0c\u5982\u679c\u5b57\u6bb5\u7684\u6570\u636e\u7c7b\u578b\u662f\u6570\u5b57\uff0c\u5219\u5728\u8bbe\u7f6e\u9ed8\u8ba4\u503c\u65f6\u4e0d\u8981\u52a0\u5f15\u53f7\uff1b\u5982\u679c\u5b57\u6bb5\u7684\u6570\u636e\u7c7b\u578b\u662f\u5b57\u7b26\u4e32\uff0c\u5219\u9700\u8981\u52a0\u5f15\u53f7\u3002 \u4ee5\u4e0a\u5c31\u662fMySQL \u9ed8\u8ba4\u503c\u8bbe\u7f6e\uff1a\u6570\u5b57\u7c7b\u578b\u548c\u5b57\u7b26\u4e32\u7c7b\u578b\u5b57\u6bb5\u5982\u4f55\u533a\u5206\uff1f\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/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-26519","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/26519","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=26519"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/26519\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=26519"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=26519"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=26519"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}