{"id":78842,"date":"2024-10-16T12:23:18","date_gmt":"2024-10-16T04:23:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/78842\/"},"modified":"2024-10-16T12:23:18","modified_gmt":"2024-10-16T04:23:18","slug":"mysql%e6%8c%87%e4%bb%a4-language-sql%ef%bc%88sql%e8%aa%9e%e8%a8%80%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/78842\/","title":{"rendered":"MySQL\u6307\u4ee4: LANGUAGE SQL\uff08SQL\u8a9e\u8a00\uff09"},"content":{"rendered":"<h1 id=\"mysql%e6%8c%87%e4%bb%a4-language-sql%ef%bc%88sql%e8%aa%9e%e8%a8%80%ef%bc%89-kShmqIViAK\">MySQL\u6307\u4ee4: LANGUAGE SQL\uff08SQL\u8a9e\u8a00\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u4e16\u754c\u4e2d\uff0cMySQL\u4f5c\u70ba\u4e00\u7a2e\u6d41\u884c\u7684\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u61c9\u7528\u7a0b\u5e8f\u4e2d\u3002MySQL\u4f7f\u7528SQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u4f86\u9032\u884c\u6578\u64da\u7684\u67e5\u8a62\u548c\u7ba1\u7406\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eMySQL\u4e2d\u7684SQL\u8a9e\u8a00\uff0c\u5305\u62ec\u5176\u57fa\u672c\u6307\u4ee4\u3001\u8a9e\u6cd5\u7d50\u69cb\u53ca\u5e38\u898b\u7528\u6cd5\u3002<\/p>\n<h2 id=\"sql%e8%aa%9e%e8%a8%80%e6%a6%82%e8%bf%b0-kShmqIViAK\">SQL\u8a9e\u8a00\u6982\u8ff0<\/h2>\n<p>SQL\u662f\u4e00\u7a2e\u5c08\u9580\u7528\u65bc\u7ba1\u7406\u548c\u64cd\u4f5c\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7684\u8a9e\u8a00\u3002\u5b83\u7684\u4e3b\u8981\u529f\u80fd\u5305\u62ec\u6578\u64da\u67e5\u8a62\u3001\u6578\u64da\u63d2\u5165\u3001\u6578\u64da\u66f4\u65b0\u548c\u6578\u64da\u522a\u9664\u3002SQL\u8a9e\u8a00\u7684\u8a2d\u8a08\u4f7f\u5f97\u7528\u6236\u80fd\u5920\u4ee5\u7c21\u55ae\u7684\u65b9\u5f0f\u8207\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\uff0c\u7121\u9700\u6df1\u5165\u4e86\u89e3\u6578\u64da\u5eab\u7684\u5167\u90e8\u7d50\u69cb\u3002<\/p>\n<h2 id=\"%e5%9f%ba%e6%9c%acsql%e6%8c%87%e4%bb%a4-kShmqIViAK\">\u57fa\u672cSQL\u6307\u4ee4<\/h2>\n<p>\u5728MySQL\u4e2d\uff0c\u5e38\u898b\u7684SQL\u6307\u4ee4\u4e3b\u8981\u5305\u62ec\u4ee5\u4e0b\u5e7e\u7a2e\uff1a<\/p>\n<ul>\n<li><strong>SELECT<\/strong>: \u7528\u65bc\u67e5\u8a62\u6578\u64da\u3002<\/li>\n<li><strong>INSERT<\/strong>: \u7528\u65bc\u63d2\u5165\u65b0\u6578\u64da\u3002<\/li>\n<li><strong>UPDATE<\/strong>: \u7528\u65bc\u66f4\u65b0\u73fe\u6709\u6578\u64da\u3002<\/li>\n<li><strong>DELETE<\/strong>: \u7528\u65bc\u522a\u9664\u6578\u64da\u3002<\/li>\n<li><strong>CREATE<\/strong>: \u7528\u65bc\u5275\u5efa\u65b0\u8868\u6216\u6578\u64da\u5eab\u3002<\/li>\n<li><strong>DROP<\/strong>: \u7528\u65bc\u522a\u9664\u8868\u6216\u6578\u64da\u5eab\u3002<\/li>\n<\/ul>\n<h3 id=\"1-select%e6%8c%87%e4%bb%a4-kShmqIViAK\">1. SELECT\u6307\u4ee4<\/h3>\n<p>SELECT\u6307\u4ee4\u662fSQL\u4e2d\u6700\u5e38\u7528\u7684\u6307\u4ee4\u4e4b\u4e00\uff0c\u7528\u65bc\u5f9e\u6578\u64da\u5eab\u4e2d\u6aa2\u7d22\u6578\u64da\u3002\u5176\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>SELECT column1, column2 FROM table_name WHERE condition;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u82e5\u8981\u5f9e\u540d\u70ba\u201cusers\u201d\u7684\u8868\u4e2d\u67e5\u8a62\u6240\u6709\u7528\u6236\u7684\u59d3\u540d\u548c\u96fb\u5b50\u90f5\u4ef6\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u6307\u4ee4\uff1a<\/p>\n<pre><code>SELECT name, email FROM users;<\/code><\/pre>\n<h3 id=\"2-insert%e6%8c%87%e4%bb%a4-kShmqIViAK\">2. INSERT\u6307\u4ee4<\/h3>\n<p>INSERT\u6307\u4ee4\u7528\u65bc\u5411\u8868\u4e2d\u63d2\u5165\u65b0\u6578\u64da\u3002\u5176\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>INSERT INTO table_name (column1, column2) VALUES (value1, value2);<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u82e5\u8981\u5411\u201cusers\u201d\u8868\u4e2d\u63d2\u5165\u4e00\u500b\u65b0\u7528\u6236\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u6307\u4ee4\uff1a<\/p>\n<pre><code>INSERT INTO users (name, email) VALUES ('John Doe', 'john@example.com');<\/code><\/pre>\n<h3 id=\"3-update%e6%8c%87%e4%bb%a4-kShmqIViAK\">3. UPDATE\u6307\u4ee4<\/h3>\n<p>UPDATE\u6307\u4ee4\u7528\u65bc\u66f4\u65b0\u8868\u4e2d\u73fe\u6709\u7684\u6578\u64da\u3002\u5176\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>UPDATE table_name SET column1 = value1 WHERE condition;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u82e5\u8981\u66f4\u65b0\u201cusers\u201d\u8868\u4e2d\u67d0\u500b\u7528\u6236\u7684\u96fb\u5b50\u90f5\u4ef6\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u6307\u4ee4\uff1a<\/p>\n<pre><code>UPDATE users SET email = 'john.doe@example.com' WHERE name = 'John Doe';<\/code><\/pre>\n<h3 id=\"4-delete%e6%8c%87%e4%bb%a4-kShmqIViAK\">4. DELETE\u6307\u4ee4<\/h3>\n<p>DELETE\u6307\u4ee4\u7528\u65bc\u522a\u9664\u8868\u4e2d\u7684\u6578\u64da\u3002\u5176\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>DELETE FROM table_name WHERE condition;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u82e5\u8981\u522a\u9664\u201cusers\u201d\u8868\u4e2d\u67d0\u500b\u7528\u6236\u7684\u8a18\u9304\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u6307\u4ee4\uff1a<\/p>\n<pre><code>DELETE FROM users WHERE name = 'John Doe';<\/code><\/pre>\n<h2 id=\"sql%e8%aa%9e%e8%a8%80%e7%9a%84%e5%84%aa%e5%8b%a2-kShmqIViAK\">SQL\u8a9e\u8a00\u7684\u512a\u52e2<\/h2>\n<p>\u4f7f\u7528SQL\u8a9e\u8a00\u7684\u4e3b\u8981\u512a\u52e2\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u7c21\u55ae\u6613\u5b78<\/strong>: SQL\u8a9e\u8a00\u7684\u8a9e\u6cd5\u76f8\u5c0d\u7c21\u55ae\uff0c\u6613\u65bc\u5b78\u7fd2\u548c\u4f7f\u7528\u3002<\/li>\n<li><strong>\u9ad8\u6548\u6027<\/strong>: SQL\u80fd\u5920\u5feb\u901f\u8655\u7406\u5927\u91cf\u6578\u64da\uff0c\u9069\u5408\u7528\u65bc\u5927\u898f\u6a21\u6578\u64da\u5eab\u3002<\/li>\n<li><strong>\u6a19\u6e96\u5316<\/strong>: SQL\u662f\u4e00\u7a2e\u6a19\u6e96\u5316\u7684\u8a9e\u8a00\uff0c\u80fd\u5920\u5728\u4e0d\u540c\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u4e2d\u4f7f\u7528\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-kShmqIViAK\">\u7e3d\u7d50<\/h2>\n<p>MySQL\u4e2d\u7684SQL\u8a9e\u8a00\u662f\u4e00\u7a2e\u5f37\u5927\u4e14\u9748\u6d3b\u7684\u5de5\u5177\uff0c\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u9ad8\u6548\u5730\u7ba1\u7406\u548c\u64cd\u4f5c\u6578\u64da\u3002\u7121\u8ad6\u662f\u67e5\u8a62\u3001\u63d2\u5165\u3001\u66f4\u65b0\u9084\u662f\u522a\u9664\u6578\u64da\uff0cSQL\u90fd\u63d0\u4f9b\u4e86\u7c21\u55ae\u660e\u77ad\u7684\u6307\u4ee4\u4f86\u5be6\u73fe\u9019\u4e9b\u529f\u80fd\u3002\u5c0d\u65bc\u5e0c\u671b\u6df1\u5165\u4e86\u89e3\u6578\u64da\u5eab\u7ba1\u7406\u7684\u958b\u767c\u8005\u4f86\u8aaa\uff0c\u638c\u63e1SQL\u8a9e\u8a00\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u4f7f\u7528 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9032\u884c\u6578\u64da\u5eab\u7ba1\u7406\u6709\u8208\u8da3\uff0cServer.HK\u63d0\u4f9b\u4e86\u7a69\u5b9a\u7684\u670d\u52d9\u548c\u652f\u6301\uff0c\u5e6b\u52a9\u60a8\u8f15\u9b06\u7ba1\u7406\u60a8\u7684\u6578\u64da\u5eab\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22MySQL\u6307\u4ee4\u4e2d\u7684SQL\u8a9e\u8a00\uff0c\u5b78\u7fd2\u5982\u4f55\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u5eab\uff0c\u57f7\u884c\u67e5\u8a62\u548c\u64cd\u4f5c\u6578\u64da\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-78842","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/78842","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=78842"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/78842\/revisions"}],"predecessor-version":[{"id":78843,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/78842\/revisions\/78843"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=78842"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=78842"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=78842"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}