{"id":186916,"date":"2024-11-11T09:54:26","date_gmt":"2024-11-11T01:54:26","guid":{"rendered":"https:\/\/server.hk\/cnblog\/186916\/"},"modified":"2024-11-11T09:54:27","modified_gmt":"2024-11-11T01:54:27","slug":"%e6%95%b8%e6%93%9a%e5%ba%ab%e6%a8%a1%e7%b3%8a%e6%9f%a5%e8%a9%a2%e6%8a%80%e5%b7%a7%ef%bc%9a%e9%81%8b%e7%94%a8%e9%97%9c%e9%8d%b5%e5%ad%97%e5%af%a6%e7%8f%be%e7%af%a9%e9%81%b8-%e5%9c%a8%e6%95%b8%e6%93%9a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/186916\/","title":{"rendered":"\u6578\u64da\u5eab\u6a21\u7cca\u67e5\u8a62\u6280\u5de7\uff1a\u904b\u7528\u95dc\u9375\u5b57\u5be6\u73fe\u7be9\u9078 (\u5728\u6578\u64da\u5eab\u4e2d\u6a21\u7cca\u67e5\u8a62\u7684\u95dc\u9375\u5b57)"},"content":{"rendered":"<h1 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e6%a8%a1%e7%b3%8a%e6%9f%a5%e8%a9%a2%e6%8a%80%e5%b7%a7%ef%bc%9a%e9%81%8b%e7%94%a8%e9%97%9c%e9%8d%b5%e5%ad%97%e5%af%a6%e7%8f%be%e7%af%a9%e9%81%b8-YEkWUhHuaU\">\u6578\u64da\u5eab\u6a21\u7cca\u67e5\u8a62\u6280\u5de7\uff1a\u904b\u7528\u95dc\u9375\u5b57\u5be6\u73fe\u7be9\u9078<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u7ba1\u7406\u548c\u67e5\u8a62\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002\u6a21\u7cca\u67e5\u8a62\u4f5c\u70ba\u4e00\u7a2e\u5f37\u5927\u7684\u67e5\u8a62\u6280\u8853\uff0c\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u5728\u6578\u64da\u5eab\u4e2d\u5feb\u901f\u627e\u5230\u6240\u9700\u7684\u4fe1\u606f\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u6578\u64da\u5eab\u4e2d\u7684\u6a21\u7cca\u67e5\u8a62\u6280\u5de7\uff0c\u7279\u5225\u662f\u5982\u4f55\u904b\u7528\u95dc\u9375\u5b57\u4f86\u5be6\u73fe\u7be9\u9078\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-YEkWUhHuaU\">\u4ec0\u9ebc\u662f\u6a21\u7cca\u67e5\u8a62\uff1f<\/h2>\n<p>\u6a21\u7cca\u67e5\u8a62\u662f\u4e00\u7a2e\u67e5\u8a62\u65b9\u5f0f\uff0c\u5141\u8a31\u7528\u6236\u5728\u4e0d\u5b8c\u5168\u78ba\u5b9a\u67e5\u8a62\u689d\u4ef6\u7684\u60c5\u6cc1\u4e0b\uff0c\u4ecd\u7136\u80fd\u5920\u7372\u5f97\u76f8\u95dc\u7684\u6578\u64da\u3002\u9019\u7a2e\u67e5\u8a62\u65b9\u5f0f\u7279\u5225\u9069\u5408\u65bc\u8655\u7406\u4e0d\u5b8c\u6574\u6216\u4e0d\u7cbe\u78ba\u7684\u6578\u64da\u3002\u4f8b\u5982\uff0c\u7576\u7528\u6236\u53ea\u8a18\u5f97\u67d0\u500b\u8a5e\u7684\u4e00\u90e8\u5206\u6642\uff0c\u6a21\u7cca\u67e5\u8a62\u53ef\u4ee5\u5e6b\u52a9\u4ed6\u5011\u627e\u5230\u6240\u6709\u5305\u542b\u8a72\u90e8\u5206\u7684\u8a18\u9304\u3002<\/p>\n<h2 id=\"%e6%a8%a1%e7%b3%8a%e6%9f%a5%e8%a9%a2%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-YEkWUhHuaU\">\u6a21\u7cca\u67e5\u8a62\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>\u5728\u5927\u591a\u6578\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u4e2d\uff0c\u6a21\u7cca\u67e5\u8a62\u901a\u5e38\u4f7f\u7528 SQL \u8a9e\u8a00\u4f86\u5be6\u73fe\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u6a21\u7cca\u67e5\u8a62\u8a9e\u6cd5\uff1a<\/p>\n<ul>\n<li><code>LIKE<\/code>\uff1a\u9019\u662f\u4e00\u500b\u5e38\u7528\u7684 SQL \u95dc\u9375\u5b57\uff0c\u7528\u65bc\u9032\u884c\u6a21\u7cca\u5339\u914d\u3002<\/li>\n<li><code>%<\/code>\uff1a\u5728 <code>LIKE<\/code> \u67e5\u8a62\u4e2d\uff0c\u767e\u5206\u865f\u4ee3\u8868\u4efb\u610f\u6578\u91cf\u7684\u5b57\u7b26\u3002<\/li>\n<li><code>_<\/code>\uff1a\u4e0b\u5283\u7dda\u4ee3\u8868\u55ae\u500b\u5b57\u7b26\u3002<\/li>\n<\/ul>\n<h3 id=\"%e7%a4%ba%e4%be%8b-YEkWUhHuaU\">\u793a\u4f8b<\/h3>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba <code>customers<\/code> \u7684\u8868\u683c\uff0c\u4e26\u4e14\u6211\u5011\u60f3\u67e5\u627e\u6240\u6709\u540d\u5b57\u4e2d\u5305\u542b\u300cJohn\u300d\u7684\u5ba2\u6236\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u67e5\u8a62\uff1a<\/p>\n<pre><code>SELECT * FROM customers WHERE name LIKE '%John%';<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u540d\u5b57\u4e2d\u5305\u542b\u300cJohn\u300d\u7684\u5ba2\u6236\u8a18\u9304\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e6%ad%a3%e5%89%87%e8%a1%a8%e9%81%94%e5%bc%8f%e9%80%b2%e8%a1%8c%e6%a8%a1%e7%b3%8a%e6%9f%a5%e8%a9%a2-YEkWUhHuaU\">\u4f7f\u7528\u6b63\u5247\u8868\u9054\u5f0f\u9032\u884c\u6a21\u7cca\u67e5\u8a62<\/h2>\n<p>\u9664\u4e86\u4f7f\u7528 <code>LIKE<\/code> \u4e4b\u5916\uff0c\u67d0\u4e9b\u6578\u64da\u5eab\u7cfb\u7d71\uff08\u5982 PostgreSQL \u548c MySQL\uff09\u9084\u652f\u6301\u6b63\u5247\u8868\u9054\u5f0f\u67e5\u8a62\u3002\u9019\u7a2e\u65b9\u6cd5\u63d0\u4f9b\u4e86\u66f4\u5f37\u5927\u7684\u5339\u914d\u80fd\u529b\uff0c\u5141\u8a31\u7528\u6236\u4f7f\u7528\u66f4\u8907\u96dc\u7684\u6a21\u5f0f\u4f86\u7be9\u9078\u6578\u64da\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b-YEkWUhHuaU\">\u793a\u4f8b<\/h3>\n<p>\u4ee5\u4e0b\u662f\u4f7f\u7528\u6b63\u5247\u8868\u9054\u5f0f\u67e5\u8a62\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>SELECT * FROM customers WHERE name REGEXP 'J.*n';<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u540d\u5b57\u4ee5\u300cJ\u300d\u958b\u982d\u4e26\u4ee5\u300cn\u300d\u7d50\u5c3e\u7684\u5ba2\u6236\u8a18\u9304\u3002<\/p>\n<h2 id=\"%e6%a8%a1%e7%b3%8a%e6%9f%a5%e8%a9%a2%e7%9a%84%e6%80%a7%e8%83%bd%e8%80%83%e9%87%8f-YEkWUhHuaU\">\u6a21\u7cca\u67e5\u8a62\u7684\u6027\u80fd\u8003\u91cf<\/h2>\n<p>\u96d6\u7136\u6a21\u7cca\u67e5\u8a62\u975e\u5e38\u6709\u7528\uff0c\u4f46\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\uff0c\u6027\u80fd\u53ef\u80fd\u6703\u6210\u70ba\u4e00\u500b\u554f\u984c\u3002\u4f7f\u7528 <code>LIKE<\/code> \u548c\u6b63\u5247\u8868\u9054\u5f0f\u67e5\u8a62\u6642\uff0c\u6578\u64da\u5eab\u53ef\u80fd\u9700\u8981\u9032\u884c\u5168\u8868\u6383\u63cf\uff0c\u9019\u6703\u5c0e\u81f4\u67e5\u8a62\u901f\u5ea6\u8b8a\u6162\u3002\u56e0\u6b64\uff0c\u5efa\u8b70\u5728\u8a2d\u8a08\u6578\u64da\u5eab\u6642\uff0c\u8003\u616e\u4f7f\u7528\u7d22\u5f15\u4f86\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-YEkWUhHuaU\">\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\u5feb\u901f\u627e\u5230\u6240\u9700\u7684\u4fe1\u606f\u3002\u901a\u904e\u904b\u7528\u95dc\u9375\u5b57\u548c\u9069\u7576\u7684\u67e5\u8a62\u8a9e\u6cd5\uff0c\u7528\u6236\u53ef\u4ee5\u6709\u6548\u5730\u7be9\u9078\u6578\u64da\u3002\u7121\u8ad6\u662f\u4f7f\u7528 <code>LIKE<\/code> \u9084\u662f\u6b63\u5247\u8868\u9054\u5f0f\uff0c\u4e86\u89e3\u9019\u4e9b\u67e5\u8a62\u6280\u5de7\u5c07\u6709\u52a9\u65bc\u63d0\u9ad8\u6578\u64da\u6aa2\u7d22\u7684\u6548\u7387\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\u652f\u6301\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\u548c\u6578\u64da\u7ba1\u7406\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u4e91\u670d\u52a1\u5668<\/a> \u9084\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u670d\u52a1\u5668<\/a>\uff0c\u6211\u5011\u90fd\u80fd\u63d0\u4f9b\u7a69\u5b9a\u7684\u6027\u80fd\u548c\u9748\u6d3b\u7684\u914d\u7f6e\u9078\u64c7\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u638c\u63e1\u6578\u64da\u5eab\u6a21\u7cca\u67e5\u8a62\u6280\u5de7\uff0c\u904b\u7528\u95dc\u9375\u5b57\u6709\u6548\u7be9\u9078\u8cc7\u6599\uff0c\u63d0\u5347\u67e5\u8a62\u6548\u7387\uff0c\u5feb\u901f\u627e\u5230\u6240\u9700\u4fe1\u606f\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-186916","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186916","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=186916"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186916\/revisions"}],"predecessor-version":[{"id":186917,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186916\/revisions\/186917"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=186916"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=186916"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=186916"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}