{"id":76162,"date":"2024-10-16T04:22:14","date_gmt":"2024-10-15T20:22:14","guid":{"rendered":"https:\/\/server.hk\/cnblog\/76162\/"},"modified":"2024-10-16T04:22:14","modified_gmt":"2024-10-15T20:22:14","slug":"mysql%e5%85%a8%e6%96%87%e6%aa%a2%e7%b4%a2%e4%b8%adlike%e7%b4%a2%e5%bc%95%e7%9a%84%e5%af%a6%e7%8f%be","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/76162\/","title":{"rendered":"MySQL\u5168\u6587\u6aa2\u7d22\u4e2dLIKE\u7d22\u5f15\u7684\u5be6\u73fe"},"content":{"rendered":"<h1 id=\"mysql%e5%85%a8%e6%96%87%e6%aa%a2%e7%b4%a2%e4%b8%adlike%e7%b4%a2%e5%bc%95%e7%9a%84%e5%af%a6%e7%8f%be-UBtqgwjIPw\">MySQL\u5168\u6587\u6aa2\u7d22\u4e2dLIKE\u7d22\u5f15\u7684\u5be6\u73fe<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u6548\u7387\u81f3\u95dc\u91cd\u8981\u3002MySQL\u4f5c\u70ba\u4e00\u500b\u6d41\u884c\u7684\u958b\u6e90\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u67e5\u8a62\u65b9\u5f0f\u4f86\u6eff\u8db3\u4e0d\u540c\u7684\u9700\u6c42\u3002\u5176\u4e2d\uff0cLIKE\u67e5\u8a62\u662f\u4e00\u7a2e\u5e38\u898b\u7684\u5b57\u7b26\u4e32\u5339\u914d\u65b9\u6cd5\uff0c\u4f46\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\uff0c\u6027\u80fd\u53ef\u80fd\u6703\u53d7\u5230\u5f71\u97ff\u3002\u672c\u6587\u5c07\u63a2\u8a0eMySQL\u4e2dLIKE\u7d22\u5f15\u7684\u5be6\u73fe\u53ca\u5176\u512a\u7f3a\u9ede\u3002<\/p>\n<h2 id=\"like%e6%9f%a5%e8%a9%a2%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-UBtqgwjIPw\">LIKE\u67e5\u8a62\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>LIKE\u904b\u7b97\u7b26\u7528\u65bc\u5728SQL\u67e5\u8a62\u4e2d\u9032\u884c\u6a21\u5f0f\u5339\u914d\u3002\u5b83\u901a\u5e38\u8207\u901a\u914d\u7b26\u4e00\u8d77\u4f7f\u7528\uff0c\u9019\u4e9b\u901a\u914d\u7b26\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><code>%<\/code>\uff1a\u8868\u793a\u96f6\u500b\u6216\u591a\u500b\u5b57\u7b26\u3002<\/li>\n<li><code>_<\/code>\uff1a\u8868\u793a\u55ae\u500b\u5b57\u7b26\u3002<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u4ee5\u4e0b\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u4ee5\u201cabc\u201d\u958b\u982d\u7684\u8a18\u9304\uff1a<\/p>\n<pre><code>SELECT * FROM table_name WHERE column_name LIKE 'abc%';<\/code><\/pre>\n<h2 id=\"like%e6%9f%a5%e8%a9%a2%e7%9a%84%e6%80%a7%e8%83%bd%e5%95%8f%e9%a1%8c-UBtqgwjIPw\">LIKE\u67e5\u8a62\u7684\u6027\u80fd\u554f\u984c<\/h2>\n<p>\u5118\u7ba1LIKE\u67e5\u8a62\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\u975e\u5e38\u65b9\u4fbf\uff0c\u4f46\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\uff0c\u6027\u80fd\u53ef\u80fd\u6703\u6210\u70ba\u4e00\u500b\u554f\u984c\u3002\u7279\u5225\u662f\u7576\u4f7f\u7528\u901a\u914d\u7b26\u5728\u5b57\u7b26\u4e32\u7684\u958b\u982d\u6642\uff08\u4f8b\u5982\uff0c<code>LIKE '%abc'<\/code>\uff09\uff0cMySQL\u7121\u6cd5\u4f7f\u7528\u7d22\u5f15\uff0c\u9019\u6703\u5c0e\u81f4\u5168\u8868\u6383\u63cf\uff0c\u5f9e\u800c\u5f71\u97ff\u67e5\u8a62\u901f\u5ea6\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e7%b4%a2%e5%bc%95%e4%be%86%e5%84%aa%e5%8c%96like%e6%9f%a5%e8%a9%a2-UBtqgwjIPw\">\u4f7f\u7528\u7d22\u5f15\u4f86\u512a\u5316LIKE\u67e5\u8a62<\/h2>\n<p>\u70ba\u4e86\u63d0\u9ad8LIKE\u67e5\u8a62\u7684\u6027\u80fd\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u7d22\u5f15\u3002MySQL\u652f\u6301B-tree\u7d22\u5f15\uff0c\u9019\u5c0d\u65bc\u4ee5\u5b57\u7b26\u4e32\u958b\u982d\u7684LIKE\u67e5\u8a62\u975e\u5e38\u6709\u6548\u3002\u4ee5\u4e0b\u662f\u5275\u5efa\u7d22\u5f15\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>CREATE INDEX idx_column_name ON table_name (column_name);<\/code><\/pre>\n<p>\u9019\u6a23\uff0c\u7576\u57f7\u884c\u67e5\u8a62\u6642\uff0cMySQL\u53ef\u4ee5\u5229\u7528\u7d22\u5f15\u4f86\u52a0\u901f\u67e5\u8a62\u904e\u7a0b\u3002<\/p>\n<h2 id=\"%e5%85%a8%e6%96%87%e6%aa%a2%e7%b4%a2%e8%88%87like%e7%9a%84%e6%af%94%e8%bc%83-UBtqgwjIPw\">\u5168\u6587\u6aa2\u7d22\u8207LIKE\u7684\u6bd4\u8f03<\/h2>\n<p>\u9664\u4e86LIKE\u67e5\u8a62\uff0cMySQL\u9084\u63d0\u4f9b\u4e86\u5168\u6587\u6aa2\u7d22\u529f\u80fd\uff0c\u9019\u5c0d\u65bc\u8655\u7406\u5927\u91cf\u6587\u672c\u6578\u64da\u6642\u66f4\u70ba\u9ad8\u6548\u3002\u5168\u6587\u6aa2\u7d22\u4f7f\u7528FULLTEXT\u7d22\u5f15\uff0c\u80fd\u5920\u66f4\u5feb\u5730\u67e5\u627e\u5305\u542b\u7279\u5b9a\u55ae\u8a5e\u6216\u77ed\u8a9e\u7684\u8a18\u9304\u3002\u4ee5\u4e0b\u662f\u5275\u5efaFULLTEXT\u7d22\u5f15\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>CREATE FULLTEXT INDEX idx_fulltext ON table_name (column_name);<\/code><\/pre>\n<p>\u4f7f\u7528FULLTEXT\u67e5\u8a62\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>SELECT * FROM table_name WHERE MATCH(column_name) AGAINST('search_term');<\/code><\/pre>\n<p>\u8207LIKE\u67e5\u8a62\u76f8\u6bd4\uff0cFULLTEXT\u67e5\u8a62\u5728\u8655\u7406\u5927\u91cf\u6587\u672c\u6642\u901a\u5e38\u80fd\u63d0\u4f9b\u66f4\u597d\u7684\u6027\u80fd\u548c\u6e96\u78ba\u6027\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-UBtqgwjIPw\">\u7d50\u8ad6<\/h2>\n<p>\u5728MySQL\u4e2d\uff0cLIKE\u67e5\u8a62\u662f\u4e00\u7a2e\u9748\u6d3b\u7684\u5b57\u7b26\u4e32\u5339\u914d\u65b9\u6cd5\uff0c\u4f46\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u53ef\u80fd\u6703\u9762\u81e8\u6027\u80fd\u6311\u6230\u3002\u901a\u904e\u5275\u5efa\u7d22\u5f15\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8LIKE\u67e5\u8a62\u7684\u6548\u7387\u3002\u7136\u800c\uff0c\u5c0d\u65bc\u9700\u8981\u9032\u884c\u8907\u96dc\u6587\u672c\u641c\u7d22\u7684\u60c5\u6cc1\uff0c\u4f7f\u7528FULLTEXT\u7d22\u5f15\u53ef\u80fd\u662f\u66f4\u597d\u7684\u9078\u64c7\u3002\u6839\u64da\u5177\u9ad4\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u67e5\u8a62\u65b9\u5f0f\uff0c\u5c07\u6709\u52a9\u65bc\u63d0\u5347\u6578\u64da\u5eab\u7684\u6574\u9ad4\u6027\u80fd\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u6258\u7ba1\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u9019\u5c07\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u548c\u5feb\u901f\u7684\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22MySQL\u5168\u6587\u6aa2\u7d22\u4e2dLIKE\u7d22\u5f15\u7684\u5be6\u73fe\uff0c\u4e86\u89e3\u5176\u6027\u80fd\u512a\u5316\u53ca\u4f7f\u7528\u6280\u5de7\uff0c\u63d0\u5347\u67e5\u8a62\u6548\u7387\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-76162","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76162","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=76162"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76162\/revisions"}],"predecessor-version":[{"id":76163,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76162\/revisions\/76163"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=76162"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=76162"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=76162"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}