{"id":162257,"date":"2024-11-04T13:31:22","date_gmt":"2024-11-04T05:31:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/162257\/"},"modified":"2024-11-04T13:31:23","modified_gmt":"2024-11-04T05:31:23","slug":"%e7%b0%a1%e4%be%bf%e5%bf%ab%e6%8d%b7%ef%bc%9a%e6%89%b9%e9%87%8f%e4%bf%ae%e6%94%b9-sql-%e6%95%b8%e6%93%9a%e5%ba%ab-%e6%89%b9%e9%87%8f%e4%bf%ae%e6%94%b9%e6%95%b8%e6%93%9a%e5%ba%ab-sql","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/162257\/","title":{"rendered":"\u7c21\u4fbf\u5feb\u6377\uff1a\u6279\u91cf\u4fee\u6539 SQL \u6578\u64da\u5eab (\u6279\u91cf\u4fee\u6539\u6578\u64da\u5eab sql)"},"content":{"rendered":"<h1 id=\"%e7%b0%a1%e4%be%bf%e5%bf%ab%e6%8d%b7%ef%bc%9a%e6%89%b9%e9%87%8f%e4%bf%ae%e6%94%b9-sql-%e6%95%b8%e6%93%9a%e5%ba%ab-wFRBgQZwkG\">\u7c21\u4fbf\u5feb\u6377\uff1a\u6279\u91cf\u4fee\u6539 SQL \u6578\u64da\u5eab<\/h1>\n<p>\u5728\u73fe\u4eca\u7684\u6578\u64da\u9a45\u52d5\u6642\u4ee3\uff0c\u6578\u64da\u5eab\u7684\u7ba1\u7406\u548c\u7dad\u8b77\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002\u5c24\u5176\u662f\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\uff0c\u6279\u91cf\u4fee\u6539 SQL \u6578\u64da\u5eab\u7684\u80fd\u529b\u986f\u5f97\u5c24\u70ba\u95dc\u9375\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u6709\u6548\u5730\u9032\u884c\u6279\u91cf\u4fee\u6539\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%89%b9%e9%87%8f%e4%bf%ae%e6%94%b9-sql-%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%9f-wFRBgQZwkG\">\u4ec0\u9ebc\u662f\u6279\u91cf\u4fee\u6539 SQL \u6578\u64da\u5eab\uff1f<\/h2>\n<p>\u6279\u91cf\u4fee\u6539 SQL \u6578\u64da\u5eab\u662f\u6307\u5728\u4e00\u6b21\u64cd\u4f5c\u4e2d\u5c0d\u591a\u689d\u8a18\u9304\u9032\u884c\u66f4\u65b0\u3001\u522a\u9664\u6216\u63d2\u5165\u7684\u904e\u7a0b\u3002\u9019\u7a2e\u65b9\u6cd5\u4e0d\u50c5\u63d0\u9ad8\u4e86\u6548\u7387\uff0c\u9084\u80fd\u6e1b\u5c11\u5c0d\u6578\u64da\u5eab\u7684\u591a\u6b21\u8a2a\u554f\uff0c\u5f9e\u800c\u964d\u4f4e\u4e86\u7cfb\u7d71\u8ca0\u64d4\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%9c%80%e8%a6%81%e6%89%b9%e9%87%8f%e4%bf%ae%e6%94%b9%ef%bc%9f-wFRBgQZwkG\">\u70ba\u4ec0\u9ebc\u9700\u8981\u6279\u91cf\u4fee\u6539\uff1f<\/h2>\n<ul>\n<li><strong>\u6548\u7387\u63d0\u5347\uff1a<\/strong>\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\uff0c\u6279\u91cf\u64cd\u4f5c\u80fd\u986f\u8457\u6e1b\u5c11\u57f7\u884c\u6642\u9593\u3002<\/li>\n<li><strong>\u6e1b\u5c11\u932f\u8aa4\uff1a<\/strong>\u901a\u904e\u4e00\u6b21\u6027\u57f7\u884c\u591a\u689d SQL \u8a9e\u53e5\uff0c\u53ef\u4ee5\u964d\u4f4e\u56e0\u591a\u6b21\u64cd\u4f5c\u800c\u7522\u751f\u7684\u932f\u8aa4\u98a8\u96aa\u3002<\/li>\n<li><strong>\u7c21\u5316\u4ee3\u78bc\uff1a<\/strong>\u6279\u91cf\u64cd\u4f5c\u4f7f\u5f97\u4ee3\u78bc\u66f4\u52a0\u7c21\u6f54\uff0c\u6613\u65bc\u7dad\u8b77\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e9%80%b2%e8%a1%8c%e6%89%b9%e9%87%8f%e4%bf%ae%e6%94%b9%ef%bc%9f-wFRBgQZwkG\">\u5982\u4f55\u9032\u884c\u6279\u91cf\u4fee\u6539\uff1f<\/h2>\n<p>\u5728 SQL \u4e2d\uff0c\u6279\u91cf\u4fee\u6539\u901a\u5e38\u4f7f\u7528 <code>UPDATE<\/code>\u3001<code>DELETE<\/code> \u548c <code>INSERT<\/code> \u8a9e\u53e5\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u6279\u91cf\u4fee\u6539\u793a\u4f8b\uff1a<\/p>\n<h3 id=\"1-%e6%89%b9%e9%87%8f%e6%9b%b4%e6%96%b0%e6%95%b8%e6%93%9a-wFRBgQZwkG\">1. \u6279\u91cf\u66f4\u65b0\u6578\u64da<\/h3>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba <code>employees<\/code> \u7684\u8868\uff0c\u4e26\u5e0c\u671b\u5c07\u6240\u6709\u54e1\u5de5\u7684\u85aa\u6c34\u63d0\u9ad8 10%\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u8a9e\u53e5\uff1a<\/p>\n<pre><code>UPDATE employees\nSET salary = salary * 1.1;<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u4e00\u6b21\u6027\u66f4\u65b0\u6240\u6709\u54e1\u5de5\u7684\u85aa\u6c34\uff0c\u7121\u9700\u9010\u689d\u4fee\u6539\u3002<\/p>\n<h3 id=\"2-%e6%89%b9%e9%87%8f%e5%88%aa%e9%99%a4%e6%95%b8%e6%93%9a-wFRBgQZwkG\">2. \u6279\u91cf\u522a\u9664\u6578\u64da<\/h3>\n<p>\u5982\u679c\u9700\u8981\u522a\u9664\u6240\u6709\u5728 2020 \u5e74\u4e4b\u524d\u5165\u8077\u7684\u54e1\u5de5\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n<pre><code>DELETE FROM employees\nWHERE hire_date &lt; '2020-01-01';<\/code><\/pre>\n<p>\u9019\u6a23\u53ef\u4ee5\u5feb\u901f\u522a\u9664\u7b26\u5408\u689d\u4ef6\u7684\u6240\u6709\u8a18\u9304\u3002<\/p>\n<h3 id=\"3-%e6%89%b9%e9%87%8f%e6%8f%92%e5%85%a5%e6%95%b8%e6%93%9a-wFRBgQZwkG\">3. \u6279\u91cf\u63d2\u5165\u6578\u64da<\/h3>\n<p>\u5728\u9700\u8981\u4e00\u6b21\u6027\u63d2\u5165\u591a\u689d\u8a18\u9304\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>INSERT INTO<\/code> \u8a9e\u53e5\u3002\u4f8b\u5982\uff0c\u63d2\u5165\u591a\u540d\u65b0\u54e1\u5de5\u7684\u6578\u64da\uff1a<\/p>\n<pre><code>INSERT INTO employees (name, hire_date, salary)\nVALUES \n('John Doe', '2023-01-15', 50000),\n('Jane Smith', '2023-01-20', 55000),\n('Emily Johnson', '2023-01-25', 60000);<\/code><\/pre>\n<p>\u9019\u6a23\u53ef\u4ee5\u5728\u4e00\u689d\u8a9e\u53e5\u4e2d\u63d2\u5165\u591a\u689d\u8a18\u9304\uff0c\u7c21\u5316\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-wFRBgQZwkG\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u9032\u884c\u6279\u91cf\u4fee\u6539\u6642\uff0c\u9700\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li><strong>\u5099\u4efd\u6578\u64da\uff1a<\/strong>\u5728\u9032\u884c\u5927\u898f\u6a21\u4fee\u6539\u4e4b\u524d\uff0c\u52d9\u5fc5\u5099\u4efd\u6578\u64da\uff0c\u4ee5\u9632\u6b62\u610f\u5916\u640d\u5931\u3002<\/li>\n<li><strong>\u6e2c\u8a66\u8a9e\u53e5\uff1a<\/strong>\u5728\u751f\u7522\u74b0\u5883\u4e2d\u57f7\u884c\u4e4b\u524d\uff0c\u5efa\u8b70\u5728\u6e2c\u8a66\u74b0\u5883\u4e2d\u5148\u57f7\u884c SQL \u8a9e\u53e5\uff0c\u78ba\u4fdd\u5176\u6b63\u78ba\u6027\u3002<\/li>\n<li><strong>\u4f7f\u7528\u4e8b\u52d9\uff1a<\/strong>\u5c0d\u65bc\u91cd\u8981\u7684\u6279\u91cf\u64cd\u4f5c\uff0c\u5efa\u8b70\u4f7f\u7528\u4e8b\u52d9\u4f86\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-wFRBgQZwkG\">\u7e3d\u7d50<\/h2>\n<p>\u6279\u91cf\u4fee\u6539 SQL \u6578\u64da\u5eab\u662f\u4e00\u9805\u91cd\u8981\u7684\u6280\u80fd\uff0c\u80fd\u5920\u986f\u8457\u63d0\u9ad8\u6578\u64da\u8655\u7406\u7684\u6548\u7387\u548c\u6e96\u78ba\u6027\u3002\u901a\u904e\u5408\u7406\u4f7f\u7528 <code>UPDATE<\/code>\u3001<code>DELETE<\/code> \u548c <code>INSERT<\/code> \u8a9e\u53e5\uff0c\u7ba1\u7406\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u5c0d\u5927\u91cf\u6578\u64da\u9032\u884c\u64cd\u4f5c\u3002\u5728\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u6642\uff0c\u8003\u616e\u5230\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u4e5f\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u7121\u8ad6\u662f\u4f7f\u7528 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u985e\u578b\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a>\uff0c\u78ba\u4fdd\u9078\u64c7\u4e00\u500b\u80fd\u5920\u652f\u6301\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u74b0\u5883\uff0c\u5c07\u6709\u52a9\u65bc\u63d0\u5347\u6574\u9ad4\u696d\u52d9\u904b\u71df\u7684\u6548\u7387\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7c21\u4fbf\u5feb\u6377\u7684\u6279\u91cf\u4fee\u6539 SQL \u6578\u64da\u5eab\u5de5\u5177\uff0c\u8f15\u9b06\u9ad8\u6548\u5730\u9032\u884c\u6578\u64da\u66f4\u65b0\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\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-162257","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/162257","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=162257"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/162257\/revisions"}],"predecessor-version":[{"id":162258,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/162257\/revisions\/162258"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=162257"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=162257"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=162257"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}