{"id":49218,"date":"2024-12-02T10:25:09","date_gmt":"2024-12-02T02:25:09","guid":{"rendered":"https:\/\/fwq.ai\/blog\/49218\/"},"modified":"2024-12-02T10:25:09","modified_gmt":"2024-12-02T02:25:09","slug":"mysql%e4%b8%a4%e8%a1%a8%e5%85%b3%e8%81%94%e6%9b%b4%e6%96%b0%e6%97%a0%e6%95%88%ef%bc%9f%e5%a6%82%e4%bd%95%e8%a7%a3%e5%86%b3%e5%ae%89%e5%85%a8%e6%9b%b4%e6%96%b0%e6%a8%a1%e5%bc%8f%e5%b8%a6%e6%9d%a5","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/49218\/","title":{"rendered":"MySQL\u4e24\u8868\u5173\u8054\u66f4\u65b0\u65e0\u6548\uff1f\u5982\u4f55\u89e3\u51b3\u5b89\u5168\u66f4\u65b0\u6a21\u5f0f\u5e26\u6765\u7684\u95ee\u9898\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>MySQL\u4e24\u8868\u5173\u8054\u66f4\u65b0\u65e0\u6548\uff1f\u5982\u4f55\u89e3\u51b3\u5b89\u5168\u66f4\u65b0\u6a21\u5f0f\u5e26\u6765\u7684\u95ee\u9898\uff1f<\/h1>\n<p>\u6765\u5230\u7c73\u4e91\u7684\u5927\u5bb6\uff0c\u76f8\u4fe1\u90fd\u662f\u7f16\u7a0b\u5b66\u4e60\u7231\u597d\u8005\uff0c\u5e0c\u671b\u5728\u8fd9\u91cc\u5b66\u4e60\u6587\u7ae0\u76f8\u5173\u7f16\u7a0b\u77e5\u8bc6\u3002\u4e0b\u9762\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u5e26\u5927\u5bb6\u804a\u804a\u300aMySQL\u4e24\u8868\u5173\u8054\u66f4\u65b0\u65e0\u6548\uff1f\u5982\u4f55\u89e3\u51b3\u5b89\u5168\u66f4\u65b0\u6a21\u5f0f\u5e26\u6765\u7684\u95ee\u9898\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\/20241118\/1731903514673ac01a08bd0.jpg\" class=\"aligncenter\" title=\"MySQL\u4e24\u8868\u5173\u8054\u66f4\u65b0\u65e0\u6548\uff1f\u5982\u4f55\u89e3\u51b3\u5b89\u5168\u66f4\u65b0\u6a21\u5f0f\u5e26\u6765\u7684\u95ee\u9898\uff1f\u63d2\u56fe\" alt=\"MySQL\u4e24\u8868\u5173\u8054\u66f4\u65b0\u65e0\u6548\uff1f\u5982\u4f55\u89e3\u51b3\u5b89\u5168\u66f4\u65b0\u6a21\u5f0f\u5e26\u6765\u7684\u95ee\u9898\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>mysql\u4e24\u8868\u5173\u8054\u66f4\u65b0\u64cd\u4f5c\u65e0\u6548\u7684\u89e3\u51b3\u529e\u6cd5<\/strong><\/p>\n<p>\u5bf9\u4e8e\u63cf\u8ff0\u7684\u95ee\u9898\uff0c\u5373\u5728\u6ee1\u8db3\u7279\u5b9a\u6761\u4ef6\u65f6\uff0c\u6839\u636e\u4e00\u5f20\u8868\u4e2d\u7684\u5b57\u6bb5\u503c\u66f4\u65b0\u53e6\u4e00\u5f20\u8868\u4e2d\u7684\u5b57\u6bb5\u503c\uff0c\u4f46\u63d0\u4f9b\u7684sql\u8bed\u53e5\u65e0\u6548\u3002\u5176\u539f\u56e0\u5728\u4e8emysql\u542f\u7528\u4e86\u5b89\u5168\u66f4\u65b0\u6a21\u5f0f\uff08safe-updates\uff09\u3002<\/p>\n<p>\u4e3a\u4e86\u89e3\u51b3\u6b64\u95ee\u9898\uff0c\u9700\u8981\u5728where\u6761\u4ef6\u4e2d\u5305\u542b\u4e3b\u952e\u6761\u4ef6\u3002\u4fee\u6539\u540e\u7684sql\u8bed\u53e5\u5982\u4e0b\uff1a<\/p>\n<pre>UPDATE cmf_course_lesson a,\n cmf_course_chapter b\nSET a.chapterid = b.id\nWHERE\n    a.courseid = b.courseid AND a.id &gt; 0;<\/pre>\n<p>\u5176\u4e2d\uff0ca.id &gt; 0\u4e3a\u4e3b\u952e\u6761\u4ef6\uff0c\u5b83\u4f5c\u4e3awhere\u6761\u4ef6\u7684\u4e00\u90e8\u5206\uff0c\u786e\u4fdd\u4ec5\u5728\u6ee1\u8db3\u4e3b\u952e\u6761\u4ef6\u7684\u60c5\u51b5\u4e0b\u624d\u6267\u884c\u66f4\u65b0\u64cd\u4f5c\u3002<\/p>\n<p>\u5b89\u5168\u66f4\u65b0\u6a21\u5f0f\u662f\u4e3a\u4e86\u9632\u6b62\u5728\u66f4\u65b0\u6216\u5220\u9664\u6570\u636e\u65f6\u53d1\u751f\u610f\u5916\u60c5\u51b5\u3002\u901a\u8fc7\u6dfb\u52a0\u4e3b\u952e\u6761\u4ef6\uff0c\u53ef\u4ee5\u786e\u4fdd\u66f4\u65b0\u64cd\u4f5c\u53ea\u5f71\u54cd\u76ee\u6807\u8bb0\u5f55\uff0c\u800c\u4e0d\u662f\u6574\u4e2a\u8868\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u672c\u6587\u7684\u5168\u90e8\u5185\u5bb9\u4e86\uff0c\u662f\u5426\u6709\u987a\u5229\u5e2e\u52a9\u4f60\u89e3\u51b3\u95ee\u9898\uff1f\u82e5\u662f\u80fd\u7ed9\u4f60\u5e26\u6765\u5b66\u4e60\u4e0a\u7684\u5e2e\u52a9\uff0c\u8bf7\u5927\u5bb6\u591a\u591a\u652f\u6301\u7c73\u4e91\uff01\u66f4\u591a\u5173\u4e8e\u6587\u7ae0\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u4e5f\u53ef\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MySQL\u4e24\u8868\u5173\u8054\u66f4\u65b0\u65e0\u6548\uff1f\u5982\u4f55\u89e3\u51b3\u5b89\u5168\u66f4\u65b0\u6a21\u5f0f\u5e26\u6765\u7684\u95ee\u9898\uff1f \u6765\u5230\u7c73\u4e91\u7684\u5927\u5bb6\uff0c\u76f8\u4fe1\u90fd\u662f\u7f16\u7a0b\u5b66\u4e60\u7231\u597d\u8005\uff0c\u5e0c\u671b\u5728\u8fd9\u91cc\u5b66\u4e60\u6587\u7ae0\u76f8\u5173\u7f16\u7a0b\u77e5\u8bc6\u3002\u4e0b\u9762\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u5e26\u5927\u5bb6\u804a\u804a\u300aMySQL\u4e24\u8868\u5173\u8054\u66f4\u65b0\u65e0\u6548\uff1f\u5982\u4f55\u89e3\u51b3\u5b89\u5168\u66f4\u65b0\u6a21\u5f0f\u5e26\u6765\u7684\u95ee\u9898\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 mysql\u4e24\u8868\u5173\u8054\u66f4\u65b0\u64cd\u4f5c\u65e0\u6548\u7684\u89e3\u51b3\u529e\u6cd5 \u5bf9\u4e8e\u63cf\u8ff0\u7684\u95ee\u9898\uff0c\u5373\u5728\u6ee1\u8db3\u7279\u5b9a\u6761\u4ef6\u65f6\uff0c\u6839\u636e\u4e00\u5f20\u8868\u4e2d\u7684\u5b57\u6bb5\u503c\u66f4\u65b0\u53e6\u4e00\u5f20\u8868\u4e2d\u7684\u5b57\u6bb5\u503c\uff0c\u4f46\u63d0\u4f9b\u7684sql\u8bed\u53e5\u65e0\u6548\u3002\u5176\u539f\u56e0\u5728\u4e8emysql\u542f\u7528\u4e86\u5b89\u5168\u66f4\u65b0\u6a21\u5f0f\uff08safe-updates\uff09\u3002 \u4e3a\u4e86\u89e3\u51b3\u6b64\u95ee\u9898\uff0c\u9700\u8981\u5728where\u6761\u4ef6\u4e2d\u5305\u542b\u4e3b\u952e\u6761\u4ef6\u3002\u4fee\u6539\u540e\u7684sql\u8bed\u53e5\u5982\u4e0b\uff1a UPDATE cmf_course_lesson a, cmf_course_chapter b SET a.chapterid = b.id WHERE a.courseid = b.courseid AND a.id &gt; 0; \u5176\u4e2d\uff0ca.id &gt; 0\u4e3a\u4e3b\u952e\u6761\u4ef6\uff0c\u5b83\u4f5c\u4e3awhere\u6761\u4ef6\u7684\u4e00\u90e8\u5206\uff0c\u786e\u4fdd\u4ec5\u5728\u6ee1\u8db3\u4e3b\u952e\u6761\u4ef6\u7684\u60c5\u51b5\u4e0b\u624d\u6267\u884c\u66f4\u65b0\u64cd\u4f5c\u3002 \u5b89\u5168\u66f4\u65b0\u6a21\u5f0f\u662f\u4e3a\u4e86\u9632\u6b62\u5728\u66f4\u65b0\u6216\u5220\u9664\u6570\u636e\u65f6\u53d1\u751f\u610f\u5916\u60c5\u51b5\u3002\u901a\u8fc7\u6dfb\u52a0\u4e3b\u952e\u6761\u4ef6\uff0c\u53ef\u4ee5\u786e\u4fdd\u66f4\u65b0\u64cd\u4f5c\u53ea\u5f71\u54cd\u76ee\u6807\u8bb0\u5f55\uff0c\u800c\u4e0d\u662f\u6574\u4e2a\u8868\u3002 \u4ee5\u4e0a\u5c31\u662f\u672c\u6587\u7684\u5168\u90e8\u5185\u5bb9\u4e86\uff0c\u662f\u5426\u6709\u987a\u5229\u5e2e\u52a9\u4f60\u89e3\u51b3\u95ee\u9898\uff1f\u82e5\u662f\u80fd\u7ed9\u4f60\u5e26\u6765\u5b66\u4e60\u4e0a\u7684\u5e2e\u52a9\uff0c\u8bf7\u5927\u5bb6\u591a\u591a\u652f\u6301\u7c73\u4e91\uff01\u66f4\u591a\u5173\u4e8e\u6587\u7ae0\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u4e5f\u53ef\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\u3002<\/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-49218","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/49218","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=49218"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/49218\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=49218"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=49218"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=49218"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}