{"id":176953,"date":"2024-11-08T12:37:21","date_gmt":"2024-11-08T04:37:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/176953\/"},"modified":"2024-11-08T12:37:22","modified_gmt":"2024-11-08T04:37:22","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a4-%e9%87%8d%e8%a4%87%e7%9a%84%e9%8d%b5%e5%90%8d%e7%a8%b1key_name","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/176953\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa4 &#8211; \u91cd\u8907\u7684\u9375\u540d\u7a31&#8217;key_name&#8217;"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a4-%e9%87%8d%e8%a4%87%e7%9a%84%e9%8d%b5%e5%90%8d%e7%a8%b1key_name-nEzCFIhVwG\">\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa4 &#8211; \u91cd\u8907\u7684\u9375\u540d\u7a31&#8217;key_name&#8217;<\/h1>\n<p>\u5728\u4f7f\u7528MySQL\u6578\u64da\u5eab\u6642\uff0c\u958b\u767c\u8005\u548c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u53ef\u80fd\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662f\u201c\u91cd\u8907\u7684\u9375\u540d\u7a31&#8217;key_name&#8217;\u201d\u932f\u8aa4\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u767c\u751f\u5728\u5617\u8a66\u5275\u5efa\u7d22\u5f15\u6216\u7d04\u675f\u6642\uff0c\u7576\u4f60\u8a66\u5716\u70ba\u4e00\u500b\u5df2\u7d93\u5b58\u5728\u7684\u9375\u540d\u7a31\u5275\u5efa\u65b0\u7684\u7d22\u5f15\u6642\uff0cMySQL\u6703\u5831\u544a\u6b64\u932f\u8aa4\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u9019\u500b\u554f\u984c\u7684\u539f\u56e0\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a4%e5%8e%9f%e5%9b%a0-nEzCFIhVwG\">\u932f\u8aa4\u539f\u56e0<\/h2>\n<p>\u91cd\u8907\u7684\u9375\u540d\u7a31\u932f\u8aa4\u901a\u5e38\u7531\u4ee5\u4e0b\u5e7e\u500b\u539f\u56e0\u5f15\u8d77\uff1a<\/p>\n<ul>\n<li><strong>\u91cd\u8907\u7684\u7d22\u5f15\u540d\u7a31\uff1a<\/strong>\u5728\u540c\u4e00\u500b\u8868\u4e2d\uff0c\u7d22\u5f15\u540d\u7a31\u5fc5\u9808\u662f\u552f\u4e00\u7684\u3002\u5982\u679c\u4f60\u5617\u8a66\u5275\u5efa\u4e00\u500b\u8207\u73fe\u6709\u7d22\u5f15\u540c\u540d\u7684\u65b0\u7d22\u5f15\uff0c\u5c31\u6703\u51fa\u73fe\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u91cd\u8907\u7684\u4e3b\u9375\u6216\u552f\u4e00\u7d04\u675f\uff1a<\/strong>\u5982\u679c\u4f60\u5728\u8868\u4e2d\u5df2\u7d93\u5b9a\u7fa9\u4e86\u4e00\u500b\u4e3b\u9375\u6216\u552f\u4e00\u7d04\u675f\uff0c\u7136\u5f8c\u53c8\u5617\u8a66\u70ba\u540c\u4e00\u5217\u5275\u5efa\u53e6\u4e00\u500b\u4e3b\u9375\u6216\u552f\u4e00\u7d04\u675f\uff0c\u4e5f\u6703\u5c0e\u81f4\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u6578\u64da\u5eab\u9077\u79fb\u6216\u5c0e\u5165\u554f\u984c\uff1a<\/strong>\u5728\u5f9e\u5176\u4ed6\u6578\u64da\u5eab\u5c0e\u5165\u6578\u64da\u6642\uff0c\u53ef\u80fd\u6703\u56e0\u70ba\u7d22\u5f15\u540d\u7a31\u885d\u7a81\u800c\u5c0e\u81f4\u6b64\u932f\u8aa4\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9%e6%ad%a4%e9%8c%af%e8%aa%a4-nEzCFIhVwG\">\u5982\u4f55\u4fee\u5fa9\u6b64\u932f\u8aa4<\/h2>\n<p>\u4fee\u5fa9\u201c\u91cd\u8907\u7684\u9375\u540d\u7a31&#8217;key_name&#8217;\u201d\u932f\u8aa4\u7684\u65b9\u6cd5\u53d6\u6c7a\u65bc\u5177\u9ad4\u60c5\u6cc1\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u89e3\u6c7a\u65b9\u6848\uff1a<\/p>\n<h3 id=\"1-%e6%aa%a2%e6%9f%a5%e7%8f%be%e6%9c%89%e7%b4%a2%e5%bc%95-nEzCFIhVwG\">1. \u6aa2\u67e5\u73fe\u6709\u7d22\u5f15<\/h3>\n<p>\u9996\u5148\uff0c\u4f60\u9700\u8981\u6aa2\u67e5\u8868\u4e2d\u5df2\u7d93\u5b58\u5728\u7684\u7d22\u5f15\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u67e5\u8a62\u4f86\u67e5\u770b\u8868\u7684\u7d22\u5f15\uff1a<\/p>\n<pre><code>SHOW INDEX FROM your_table_name;<\/code><\/pre>\n<p>\u9019\u5c07\u5217\u51fa\u6240\u6709\u7d22\u5f15\u53ca\u5176\u540d\u7a31\u3002\u78ba\u4fdd\u4f60\u8981\u5275\u5efa\u7684\u7d22\u5f15\u540d\u7a31\u4e0d\u8207\u73fe\u6709\u7d22\u5f15\u91cd\u8907\u3002<\/p>\n<h3 id=\"2-%e5%88%aa%e9%99%a4%e9%87%8d%e8%a4%87%e7%9a%84%e7%b4%a2%e5%bc%95-nEzCFIhVwG\">2. \u522a\u9664\u91cd\u8907\u7684\u7d22\u5f15<\/h3>\n<p>\u5982\u679c\u767c\u73fe\u6709\u91cd\u8907\u7684\u7d22\u5f15\u540d\u7a31\uff0c\u53ef\u4ee5\u9078\u64c7\u522a\u9664\u4e0d\u9700\u8981\u7684\u7d22\u5f15\u3002\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\u522a\u9664\u7d22\u5f15\uff1a<\/p>\n<pre><code>ALTER TABLE your_table_name DROP INDEX index_name;<\/code><\/pre>\n<p>\u5728\u57f7\u884c\u6b64\u64cd\u4f5c\u4e4b\u524d\uff0c\u8acb\u78ba\u4fdd\u4f60\u4e86\u89e3\u8a72\u7d22\u5f15\u7684\u7528\u9014\uff0c\u4ee5\u514d\u5f71\u97ff\u6578\u64da\u5eab\u6027\u80fd\u3002<\/p>\n<h3 id=\"3-%e4%bf%ae%e6%94%b9%e7%b4%a2%e5%bc%95%e5%90%8d%e7%a8%b1-nEzCFIhVwG\">3. \u4fee\u6539\u7d22\u5f15\u540d\u7a31<\/h3>\n<p>\u5982\u679c\u4f60\u9700\u8981\u4fdd\u7559\u73fe\u6709\u7684\u7d22\u5f15\uff0c\u53ef\u4ee5\u8003\u616e\u4fee\u6539\u65b0\u7d22\u5f15\u7684\u540d\u7a31\u3002\u78ba\u4fdd\u65b0\u540d\u7a31\u662f\u552f\u4e00\u7684\uff0c\u7136\u5f8c\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\u5275\u5efa\u7d22\u5f15\uff1a<\/p>\n<pre><code>CREATE INDEX new_index_name ON your_table_name (column_name);<\/code><\/pre>\n<h3 id=\"4-%e6%aa%a2%e6%9f%a5%e6%95%b8%e6%93%9a%e5%ba%ab%e9%81%b7%e7%a7%bb%e8%85%b3%e6%9c%ac-nEzCFIhVwG\">4. \u6aa2\u67e5\u6578\u64da\u5eab\u9077\u79fb\u8173\u672c<\/h3>\n<p>\u5982\u679c\u932f\u8aa4\u767c\u751f\u5728\u6578\u64da\u5eab\u9077\u79fb\u6216\u5c0e\u5165\u904e\u7a0b\u4e2d\uff0c\u8acb\u6aa2\u67e5\u4f60\u7684\u9077\u79fb\u8173\u672c\uff0c\u78ba\u4fdd\u4e0d\u6703\u91cd\u8907\u5275\u5efa\u7d22\u5f15\u3002\u53ef\u4ee5\u901a\u904e\u6dfb\u52a0\u689d\u4ef6\u4f86\u907f\u514d\u91cd\u8907\u5275\u5efa\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre><code>CREATE INDEX IF NOT EXISTS index_name ON your_table_name (column_name);<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-nEzCFIhVwG\">\u7e3d\u7d50<\/h2>\n<p>\u91cd\u8907\u7684\u9375\u540d\u7a31\u932f\u8aa4\u5728MySQL\u4e2d\u662f\u4e00\u500b\u5e38\u898b\u554f\u984c\uff0c\u4f46\u901a\u904e\u6aa2\u67e5\u73fe\u6709\u7d22\u5f15\u3001\u522a\u9664\u4e0d\u5fc5\u8981\u7684\u7d22\u5f15\u6216\u4fee\u6539\u7d22\u5f15\u540d\u7a31\uff0c\u53ef\u4ee5\u8f15\u9b06\u89e3\u6c7a\u3002\u4e86\u89e3\u5982\u4f55\u7ba1\u7406\u7d22\u5f15\u5c0d\u65bc\u7dad\u8b77\u6578\u64da\u5eab\u7684\u6027\u80fd\u81f3\u95dc\u91cd\u8981\u3002\u5982\u679c\u4f60\u9700\u8981\u9032\u4e00\u6b65\u7684\u652f\u6301\u6216\u5c0b\u627e\u9ad8\u6548\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u670d\u52d9\uff0c\u4ee5\u4fbf\u66f4\u597d\u5730\u7ba1\u7406\u4f60\u7684\u6578\u64da\u5eab\u548c\u61c9\u7528\u7a0b\u5e8f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa4\uff1a\u91cd\u8907\u7684\u9375\u540d\u7a31&#8217;key_name&#8217;\uff0c\u89e3\u6c7a\u65b9\u6848\u548c\u6b65\u9a5f\uff0c\u8b93\u60a8\u7684\u6578\u64da\u5eab\u904b\u884c\u9806\u66a2\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-176953","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/176953","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"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=176953"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/176953\/revisions"}],"predecessor-version":[{"id":176954,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/176953\/revisions\/176954"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=176953"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=176953"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=176953"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}