{"id":7104,"date":"2024-11-14T15:36:36","date_gmt":"2024-11-14T07:36:36","guid":{"rendered":"https:\/\/fwq.ai\/blog\/7104\/"},"modified":"2024-11-14T15:36:36","modified_gmt":"2024-11-14T07:36:36","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8-update-%e8%af%ad%e5%8f%a5%e6%89%b9%e9%87%8f%e4%bf%ae%e6%94%b9-mysql-%e8%a1%a8%e6%a0%bc%e6%95%b0%e6%8d%ae%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/7104\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528 UPDATE \u8bed\u53e5\u6279\u91cf\u4fee\u6539 MySQL \u8868\u683c\u6570\u636e\uff1f"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/001\/246\/273\/173044459941956.jpg\" class=\"aligncenter\" title=\"\u5982\u4f55\u4f7f\u7528 UPDATE \u8bed\u53e5\u6279\u91cf\u4fee\u6539 MySQL \u8868\u683c\u6570\u636e\uff1f\u63d2\u56fe\" alt=\"\u5982\u4f55\u4f7f\u7528 UPDATE \u8bed\u53e5\u6279\u91cf\u4fee\u6539 MySQL \u8868\u683c\u6570\u636e\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>\u6279\u91cf\u4fee\u6539  \u8868\u683c\u4e2d\u7684\u6570\u636e<\/strong><\/p>\n<p>\u5728 mysql \u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7 update \u8bed\u53e5\u5b9e\u73b0\u5bf9\u8868\u683c\u6570\u636e\u7684\u6279\u91cf\u4fee\u6539\u3002\u5177\u4f53\u64cd\u4f5c\u6b65\u9aa4\u5982\u4e0b\uff1a<\/p>\n<pre>update \u8868\u683c\u540d\nset \u5217\u540d = \u65b0\u503c\nwhere \u5217\u540d = \u65e7\u503c<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4f8b\u5982\uff0c\u8981\u4fee\u6539 user_info \u8868\u683c\u4e2d column_a \u4e3a a \u7684\u6240\u6709\u8bb0\u5f55\uff0c\u5c06 column_b \u4fee\u6539\u4e3a b\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u53e5\uff1a<\/p>\n<pre>UPDATE user_info\nSET column_b = 'b'\nWHERE column_a = 'a'<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u6267\u884c\u6b64\u8bed\u53e5\u540e\uff0cuser_info \u8868\u683c\u4e2d column_a \u4e3a a \u7684\u6240\u6709\u8bb0\u5f55\u7684 column_b \u5b57\u6bb5\u90fd\u5c06\u88ab\u4fee\u6539\u4e3a b\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5982\u4f55\u4f7f\u7528 UPDATE \u8bed\u53e5\u6279\u91cf\u4fee\u6539 MySQL \u8868\u683c\u6570\u636e\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>\u6279\u91cf\u4fee\u6539 \u8868\u683c\u4e2d\u7684\u6570\u636e \u5728 mysql \u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7 update \u8bed\u53e5\u5b9e\u73b0\u5bf9\u8868\u683c\u6570\u636e\u7684\u6279\u91cf\u4fee\u6539\u3002\u5177\u4f53\u64cd\u4f5c\u6b65\u9aa4\u5982\u4e0b\uff1a update \u8868\u683c\u540d set \u5217\u540d = \u65b0\u503c where \u5217\u540d = \u65e7\u503c \u767b\u5f55\u540e\u590d\u5236 \u4f8b\u5982\uff0c\u8981\u4fee\u6539 user_info \u8868\u683c\u4e2d column_a \u4e3a a \u7684\u6240\u6709\u8bb0\u5f55\uff0c\u5c06 column_b \u4fee\u6539\u4e3a b\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u53e5\uff1a UPDATE user_info SET column_b = &#8216;b&#8217; WHERE column_a = &#8216;a&#8217; \u767b\u5f55\u540e\u590d\u5236 \u6267\u884c\u6b64\u8bed\u53e5\u540e\uff0cuser_info \u8868\u683c\u4e2d column_a \u4e3a a \u7684\u6240\u6709\u8bb0\u5f55\u7684 column_b \u5b57\u6bb5\u90fd\u5c06\u88ab\u4fee\u6539\u4e3a b\u3002 \u4ee5\u4e0a\u5c31\u662f\u5982\u4f55\u4f7f\u7528 UPDATE \u8bed\u53e5\u6279\u91cf\u4fee\u6539 MySQL \u8868\u683c\u6570\u636e\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},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-7104","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/7104","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=7104"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/7104\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=7104"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=7104"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=7104"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}