{"id":179858,"date":"2024-11-09T05:23:21","date_gmt":"2024-11-08T21:23:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/179858\/"},"modified":"2024-11-09T05:23:22","modified_gmt":"2024-11-08T21:23:22","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e9%80%b2%e8%a1%8c%e6%9c%89%e6%95%88%e7%9a%84%e6%a8%a1%e7%b3%8a%e6%9f%a5%e8%a9%a2-%e6%95%b8%e6%93%9a%e5%ba%ab%e6%a8%a1%e7%b3%8a%e6%9f%a5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/179858\/","title":{"rendered":"\u5982\u4f55\u5728\u6578\u64da\u5eab\u4e2d\u9032\u884c\u6709\u6548\u7684\u6a21\u7cca\u67e5\u8a62 (\u6578\u64da\u5eab\u6a21\u7cca\u67e5\u8a62)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e5%9c%a8%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e9%80%b2%e8%a1%8c%e6%9c%89%e6%95%88%e7%9a%84%e6%a8%a1%e7%b3%8a%e6%9f%a5%e8%a9%a2-%e6%95%b8%e6%93%9a%e5%ba%ab%e6%a8%a1%e7%b3%8a%e6%9f%a5-xBPdjNppyZ\">\u5982\u4f55\u5728\u6578\u64da\u5eab\u4e2d\u9032\u884c\u6709\u6548\u7684\u6a21\u7cca\u67e5\u8a62 (\u6578\u64da\u5eab\u6a21\u7cca\u67e5\u8a62)<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u4f7f\u7528\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u666e\u904d\u3002\u7121\u8ad6\u662f\u4f01\u696d\u9084\u662f\u500b\u4eba\uff0c\u6578\u64da\u5eab\u90fd\u626e\u6f14\u8457\u91cd\u8981\u7684\u89d2\u8272\u3002\u6a21\u7cca\u67e5\u8a62\u4f5c\u70ba\u4e00\u7a2e\u67e5\u8a62\u6280\u8853\uff0c\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u5728\u6578\u64da\u5eab\u4e2d\u627e\u5230\u4e0d\u5b8c\u5168\u5339\u914d\u7684\u6578\u64da\uff0c\u9019\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u5c24\u70ba\u91cd\u8981\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728\u6578\u64da\u5eab\u4e2d\u9032\u884c\u6709\u6548\u7684\u6a21\u7cca\u67e5\u8a62\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u6280\u5de7\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e6%a8%a1%e7%b3%8a%e6%9f%a5%e8%a9%a2%ef%bc%9f-xBPdjNppyZ\">\u4ec0\u9ebc\u662f\u6a21\u7cca\u67e5\u8a62\uff1f<\/h2>\n<p>\u6a21\u7cca\u67e5\u8a62\u662f\u6307\u5728\u67e5\u8a62\u6642\u5141\u8a31\u4e0d\u5b8c\u5168\u5339\u914d\u7684\u67e5\u8a62\u65b9\u5f0f\u3002\u9019\u7a2e\u67e5\u8a62\u65b9\u5f0f\u901a\u5e38\u7528\u65bc\u7528\u6236\u4e0d\u78ba\u5b9a\u5b8c\u6574\u95dc\u9375\u5b57\u6216\u60f3\u8981\u67e5\u627e\u76f8\u4f3c\u9805\u76ee\u6642\u3002\u6a21\u7cca\u67e5\u8a62\u53ef\u4ee5\u901a\u904e\u4f7f\u7528\u901a\u914d\u7b26\u3001\u6b63\u5247\u8868\u9054\u5f0f\u6216\u7279\u5b9a\u7684\u67e5\u8a62\u8a9e\u6cd5\u4f86\u5be6\u73fe\u3002<\/p>\n<h2 id=\"%e6%a8%a1%e7%b3%8a%e6%9f%a5%e8%a9%a2%e7%9a%84%e5%b8%b8%e8%a6%8b%e6%96%b9%e6%b3%95-xBPdjNppyZ\">\u6a21\u7cca\u67e5\u8a62\u7684\u5e38\u898b\u65b9\u6cd5<\/h2>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8%e9%80%9a%e9%85%8d%e7%ac%a6-xBPdjNppyZ\">1. \u4f7f\u7528\u901a\u914d\u7b26<\/h3>\n<p>\u901a\u914d\u7b26\u662f\u6a21\u7cca\u67e5\u8a62\u4e2d\u6700\u5e38\u7528\u7684\u5de5\u5177\u3002\u5728 SQL \u4e2d\uff0c\u6700\u5e38\u898b\u7684\u901a\u914d\u7b26\u662f\u767e\u5206\u865f\uff08%\uff09\u548c\u4e0b\u5283\u7dda\uff08_\uff09\u3002<\/p>\n<ul>\n<li><strong>\u767e\u5206\u865f\uff08%\uff09<\/strong>\uff1a\u8868\u793a\u96f6\u500b\u6216\u591a\u500b\u5b57\u7b26\u3002\u4f8b\u5982\uff0c\u67e5\u8a62 &#8220;A%&#8221; \u5c07\u8fd4\u56de\u6240\u6709\u4ee5 &#8220;A&#8221; \u958b\u982d\u7684\u8a18\u9304\u3002<\/li>\n<li><strong>\u4e0b\u5283\u7dda\uff08_\uff09<\/strong>\uff1a\u8868\u793a\u55ae\u500b\u5b57\u7b26\u3002\u4f8b\u5982\uff0c\u67e5\u8a62 &#8220;A_%&#8221; \u5c07\u8fd4\u56de\u6240\u6709\u4ee5 &#8220;A&#8221; \u958b\u982d\uff0c\u4e26\u4e14\u7b2c\u4e8c\u500b\u5b57\u7b26\u53ef\u4ee5\u662f\u4efb\u4f55\u5b57\u7b26\u7684\u8a18\u9304\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528\u901a\u914d\u7b26\u7684 SQL \u67e5\u8a62\u793a\u4f8b\uff1a<\/p>\n<pre><code>SELECT * FROM users WHERE username LIKE 'A%';<\/code><\/pre>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8%e6%ad%a3%e5%89%87%e8%a1%a8%e9%81%94%e5%bc%8f-xBPdjNppyZ\">2. \u4f7f\u7528\u6b63\u5247\u8868\u9054\u5f0f<\/h3>\n<p>\u5728\u67d0\u4e9b\u6578\u64da\u5eab\u7cfb\u7d71\u4e2d\uff0c\u5982 MySQL \u548c PostgreSQL\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u6b63\u5247\u8868\u9054\u5f0f\u9032\u884c\u66f4\u8907\u96dc\u7684\u6a21\u7cca\u67e5\u8a62\u3002\u6b63\u5247\u8868\u9054\u5f0f\u5141\u8a31\u7528\u6236\u5b9a\u7fa9\u66f4\u9748\u6d3b\u7684\u5339\u914d\u6a21\u5f0f\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528\u6b63\u5247\u8868\u9054\u5f0f\u7684\u67e5\u8a62\u793a\u4f8b\uff1a<\/p>\n<pre><code>SELECT * FROM users WHERE username REGEXP '^A.*';<\/code><\/pre>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8%e5%85%a8%e6%96%87%e6%90%9c%e7%b4%a2-xBPdjNppyZ\">3. \u4f7f\u7528\u5168\u6587\u641c\u7d22<\/h3>\n<p>\u5c0d\u65bc\u5927\u578b\u6587\u672c\u6578\u64da\uff0c\u4f7f\u7528\u5168\u6587\u641c\u7d22\u529f\u80fd\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002\u8a31\u591a\u6578\u64da\u5eab\u7cfb\u7d71\uff08\u5982 MySQL \u548c PostgreSQL\uff09\u90fd\u63d0\u4f9b\u4e86\u5168\u6587\u641c\u7d22\u7684\u529f\u80fd\uff0c\u5141\u8a31\u7528\u6236\u5728\u6587\u672c\u5b57\u6bb5\u4e2d\u9032\u884c\u6a21\u7cca\u67e5\u8a62\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528\u5168\u6587\u641c\u7d22\u7684\u67e5\u8a62\u793a\u4f8b\uff1a<\/p>\n<pre><code>SELECT * FROM articles WHERE MATCH(title, content) AGAINST('\u6a21\u7cca\u67e5\u8a62' IN NATURAL LANGUAGE MODE);<\/code><\/pre>\n<h2 id=\"%e6%a8%a1%e7%b3%8a%e6%9f%a5%e8%a9%a2%e7%9a%84%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90-xBPdjNppyZ\">\u6a21\u7cca\u67e5\u8a62\u7684\u6700\u4f73\u5be6\u8e10<\/h2>\n<ul>\n<li><strong>\u9650\u5236\u67e5\u8a62\u7bc4\u570d<\/strong>\uff1a\u5728\u9032\u884c\u6a21\u7cca\u67e5\u8a62\u6642\uff0c\u76e1\u91cf\u9650\u5236\u67e5\u8a62\u7684\u7bc4\u570d\uff0c\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002<\/li>\n<li><strong>\u4f7f\u7528\u7d22\u5f15<\/strong>\uff1a\u5c0d\u65bc\u7d93\u5e38\u9032\u884c\u6a21\u7cca\u67e5\u8a62\u7684\u5b57\u6bb5\uff0c\u8003\u616e\u5efa\u7acb\u7d22\u5f15\uff0c\u4ee5\u52a0\u5feb\u67e5\u8a62\u901f\u5ea6\u3002<\/li>\n<li><strong>\u6e2c\u8a66\u67e5\u8a62\u6027\u80fd<\/strong>\uff1a\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u5b9a\u671f\u6e2c\u8a66\u548c\u512a\u5316\u67e5\u8a62\u6027\u80fd\uff0c\u4ee5\u78ba\u4fdd\u7cfb\u7d71\u7684\u9ad8\u6548\u904b\u884c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-xBPdjNppyZ\">\u7d50\u8ad6<\/h2>\n<p>\u6a21\u7cca\u67e5\u8a62\u662f\u4e00\u7a2e\u5f37\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u5e6b\u52a9\u7528\u6236\u5728\u6578\u64da\u5eab\u4e2d\u627e\u5230\u4e0d\u5b8c\u5168\u5339\u914d\u7684\u6578\u64da\u3002\u901a\u904e\u4f7f\u7528\u901a\u914d\u7b26\u3001\u6b63\u5247\u8868\u9054\u5f0f\u548c\u5168\u6587\u641c\u7d22\u7b49\u6280\u8853\uff0c\u7528\u6236\u53ef\u4ee5\u6709\u6548\u5730\u9032\u884c\u6a21\u7cca\u67e5\u8a62\u3002\u9075\u5faa\u6700\u4f73\u5be6\u8e10\u53ef\u4ee5\u9032\u4e00\u6b65\u63d0\u9ad8\u67e5\u8a62\u7684\u6548\u7387\u548c\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> \u670d\u52d9\uff0c\u9019\u5c07\u70ba\u60a8\u7684\u6578\u64da\u5eab\u64cd\u4f5c\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728\u6578\u64da\u5eab\u4e2d\u9032\u884c\u6709\u6548\u7684\u6a21\u7cca\u67e5\u8a62\uff0c\u63d0\u5347\u6578\u64da\u6aa2\u7d22\u7cbe\u6e96\u5ea6\uff0c\u512a\u5316\u67e5\u8a62\u6027\u80fd\uff0c\u6eff\u8db3\u591a\u6a23\u5316\u9700\u6c42\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-179858","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179858","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=179858"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179858\/revisions"}],"predecessor-version":[{"id":179859,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179858\/revisions\/179859"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=179858"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=179858"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=179858"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}