{"id":194359,"date":"2024-11-13T06:00:20","date_gmt":"2024-11-12T22:00:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/194359\/"},"modified":"2024-11-13T06:00:22","modified_gmt":"2024-11-12T22:00:22","slug":"%e6%98%93%e8%aa%9e%e8%a8%80%e6%95%b8%e6%93%9a%e5%ba%ab%e5%9f%ba%e7%a4%8e%ef%bc%9a%e5%ad%b8%e7%bf%92sql%e6%9f%a5%e8%a9%a2%e8%aa%9e%e5%8f%a5-%e6%98%93%e8%aa%9e%e8%a8%80%e6%95%b8%e6%93%9a%e5%ba%ab-sql","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/194359\/","title":{"rendered":"\u6613\u8a9e\u8a00\u6578\u64da\u5eab\u57fa\u790e\uff1a\u5b78\u7fd2SQL\u67e5\u8a62\u8a9e\u53e5 (\u6613\u8a9e\u8a00\u6578\u64da\u5eab sql)"},"content":{"rendered":"<h1 id=\"%e6%98%93%e8%aa%9e%e8%a8%80%e6%95%b8%e6%93%9a%e5%ba%ab%e5%9f%ba%e7%a4%8e%ef%bc%9a%e5%ad%b8%e7%bf%92sql%e6%9f%a5%e8%a9%a2%e8%aa%9e%e5%8f%a5-%e6%98%93%e8%aa%9e%e8%a8%80%e6%95%b8%e6%93%9a%e5%ba%ab-sql-eRZZFNxzao\">\u6613\u8a9e\u8a00\u6578\u64da\u5eab\u57fa\u790e\uff1a\u5b78\u7fd2SQL\u67e5\u8a62\u8a9e\u53e5 (\u6613\u8a9e\u8a00\u6578\u64da\u5eab sql)<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u6642\u4ee3\uff0c\u6578\u64da\u5eab\u7684\u7ba1\u7406\u548c\u64cd\u4f5c\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002SQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u662f\u7528\u65bc\u8207\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\u7684\u4e3b\u8981\u8a9e\u8a00\u4e4b\u4e00\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u6613\u8a9e\u8a00\u6578\u64da\u5eab\u7684\u57fa\u790e\u77e5\u8b58\uff0c\u7279\u5225\u662f\u5982\u4f55\u4f7f\u7528SQL\u67e5\u8a62\u8a9e\u53e5\u4f86\u64cd\u4f5c\u6578\u64da\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afsql%ef%bc%9f-eRZZFNxzao\">\u4ec0\u9ebc\u662fSQL\uff1f<\/h2>\n<p>SQL\u662f\u4e00\u7a2e\u5c08\u9580\u7528\u65bc\u7ba1\u7406\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7684\u7de8\u7a0b\u8a9e\u8a00\u3002\u5b83\u5141\u8a31\u7528\u6236\u5275\u5efa\u3001\u8b80\u53d6\u3001\u66f4\u65b0\u548c\u522a\u9664\u6578\u64da\uff08\u901a\u5e38\u7c21\u7a31\u70baCRUD\u64cd\u4f5c\uff09\u3002SQL\u7684\u8a9e\u6cd5\u7c21\u55ae\u660e\u77ad\uff0c\u4f7f\u5f97\u5373\u4f7f\u662f\u521d\u5b78\u8005\u4e5f\u80fd\u5feb\u901f\u4e0a\u624b\u3002<\/p>\n<h2 id=\"%e6%98%93%e8%aa%9e%e8%a8%80%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-eRZZFNxzao\">\u6613\u8a9e\u8a00\u6578\u64da\u5eab\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u6613\u8a9e\u8a00\u662f\u4e00\u7a2e\u5c08\u70ba\u4e2d\u570b\u958b\u767c\u7684\u7de8\u7a0b\u8a9e\u8a00\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u61c9\u7528\u7a0b\u5e8f\u7684\u958b\u767c\u4e2d\u3002\u6613\u8a9e\u8a00\u6578\u64da\u5eab\u5247\u662f\u5176\u7528\u65bc\u6578\u64da\u5b58\u5132\u548c\u7ba1\u7406\u7684\u7d44\u4ef6\u3002\u4f7f\u7528\u6613\u8a9e\u8a00\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c\u6642\uff0cSQL\u67e5\u8a62\u8a9e\u53e5\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u5de5\u5177\u3002<\/p>\n<h3 id=\"sql%e6%9f%a5%e8%a9%a2%e8%aa%9e%e5%8f%a5%e7%9a%84%e5%9f%ba%e6%9c%ac%e7%b5%90%e6%a7%8b-eRZZFNxzao\">SQL\u67e5\u8a62\u8a9e\u53e5\u7684\u57fa\u672c\u7d50\u69cb<\/h3>\n<p>SQL\u67e5\u8a62\u8a9e\u53e5\u7684\u57fa\u672c\u7d50\u69cb\u901a\u5e38\u5305\u62ec\u4ee5\u4e0b\u5e7e\u500b\u90e8\u5206\uff1a<\/p>\n<ul>\n<li><strong>SELECT<\/strong>\uff1a\u6307\u5b9a\u8981\u67e5\u8a62\u7684\u5217\u3002<\/li>\n<li><strong>FROM<\/strong>\uff1a\u6307\u5b9a\u8981\u67e5\u8a62\u7684\u8868\u3002<\/li>\n<li><strong>WHERE<\/strong>\uff1a\u6307\u5b9a\u67e5\u8a62\u7684\u689d\u4ef6\u3002<\/li>\n<li><strong>ORDER BY<\/strong>\uff1a\u6307\u5b9a\u67e5\u8a62\u7d50\u679c\u7684\u6392\u5e8f\u65b9\u5f0f\u3002<\/li>\n<\/ul>\n<h3 id=\"%e5%9f%ba%e6%9c%ac%e7%9a%84sql%e6%9f%a5%e8%a9%a2%e7%a4%ba%e4%be%8b-eRZZFNxzao\">\u57fa\u672c\u7684SQL\u67e5\u8a62\u793a\u4f8b<\/h3>\n<pre><code>SELECT name, age \nFROM users \nWHERE age &gt; 18 \nORDER BY age DESC;<\/code><\/pre>\n<p>\u4e0a\u8ff0\u67e5\u8a62\u8a9e\u53e5\u7684\u610f\u601d\u662f\uff1a\u5f9e\u540d\u70ba\u201cusers\u201d\u7684\u8868\u4e2d\u9078\u64c7\u201cname\u201d\u548c\u201cage\u201d\u5169\u5217\uff0c\u4e26\u4e14\u53ea\u8fd4\u56de\u5e74\u9f61\u5927\u65bc18\u7684\u7528\u6236\uff0c\u7d50\u679c\u6309\u5e74\u9f61\u964d\u5e8f\u6392\u5217\u3002<\/p>\n<h2 id=\"%e5%b8%b8%e7%94%a8%e7%9a%84sql%e6%9f%a5%e8%a9%a2%e8%aa%9e%e5%8f%a5-eRZZFNxzao\">\u5e38\u7528\u7684SQL\u67e5\u8a62\u8a9e\u53e5<\/h2>\n<h3 id=\"1-%e6%8f%92%e5%85%a5%e6%95%b8%e6%93%9a-eRZZFNxzao\">1. \u63d2\u5165\u6578\u64da<\/h3>\n<p>\u8981\u5411\u6578\u64da\u5eab\u4e2d\u63d2\u5165\u65b0\u6578\u64da\uff0c\u53ef\u4ee5\u4f7f\u7528INSERT\u8a9e\u53e5\uff1a<\/p>\n<pre><code>INSERT INTO users (name, age) \nVALUES ('\u5f35\u4e09', 25);<\/code><\/pre>\n<h3 id=\"2-%e6%9b%b4%e6%96%b0%e6%95%b8%e6%93%9a-eRZZFNxzao\">2. \u66f4\u65b0\u6578\u64da<\/h3>\n<p>\u5982\u679c\u9700\u8981\u66f4\u65b0\u5df2\u5b58\u5728\u7684\u6578\u64da\uff0c\u53ef\u4ee5\u4f7f\u7528UPDATE\u8a9e\u53e5\uff1a<\/p>\n<pre><code>UPDATE users \nSET age = 26 \nWHERE name = '\u5f35\u4e09';<\/code><\/pre>\n<h3 id=\"3-%e5%88%aa%e9%99%a4%e6%95%b8%e6%93%9a-eRZZFNxzao\">3. \u522a\u9664\u6578\u64da<\/h3>\n<p>\u8981\u522a\u9664\u6578\u64da\uff0c\u53ef\u4ee5\u4f7f\u7528DELETE\u8a9e\u53e5\uff1a<\/p>\n<pre><code>DELETE FROM users \nWHERE name = '\u5f35\u4e09';<\/code><\/pre>\n<h2 id=\"%e5%ad%b8%e7%bf%92sql%e7%9a%84%e8%b3%87%e6%ba%90-eRZZFNxzao\">\u5b78\u7fd2SQL\u7684\u8cc7\u6e90<\/h2>\n<p>\u5b78\u7fd2SQL\u7684\u8cc7\u6e90\u6709\u5f88\u591a\uff0c\u5305\u62ec\u5728\u7dda\u8ab2\u7a0b\u3001\u66f8\u7c4d\u548c\u8ad6\u58c7\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u63a8\u85a6\u7684\u5b78\u7fd2\u8cc7\u6e90\uff1a<\/p>\n<ul>\n<li>W3Schools SQL Tutorial<\/li>\n<li>Codecademy SQL Course<\/li>\n<li>\u300aSQL\u5fc5\u77e5\u5fc5\u6703\u300b\u4e00\u66f8<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-eRZZFNxzao\">\u7d50\u8ad6<\/h2>\n<p>\u638c\u63e1SQL\u67e5\u8a62\u8a9e\u53e5\u662f\u5b78\u7fd2\u6613\u8a9e\u8a00\u6578\u64da\u5eab\u7684\u57fa\u790e\u3002\u901a\u904e\u7406\u89e3\u57fa\u672c\u7684\u67e5\u8a62\u7d50\u69cb\u548c\u5e38\u7528\u8a9e\u53e5\uff0c\u60a8\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u548c\u64cd\u4f5c\u6578\u64da\u3002\u96a8\u8457\u5c0dSQL\u7684\u6df1\u5165\u5b78\u7fd2\uff0c\u60a8\u5c07\u80fd\u5920\u66f4\u9748\u6d3b\u5730\u8655\u7406\u5404\u7a2e\u6578\u64da\u5eab\u64cd\u4f5c\uff0c\u70ba\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\u63d0\u4f9b\u5f37\u5927\u7684\u6578\u64da\u652f\u6301\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u6578\u64da\u5eab\u7ba1\u7406\u6709\u66f4\u9ad8\u7684\u9700\u6c42\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u642d\u5efa\u60a8\u7684\u6578\u64da\u5eab\u74b0\u5883\uff0c\u4eab\u53d7\u66f4\u9ad8\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u638c\u63e1\u6613\u8a9e\u8a00\u6578\u64da\u5eab\u57fa\u790e\uff0c\u5b78\u7fd2SQL\u67e5\u8a62\u8a9e\u53e5\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u8207\u5206\u6790\u80fd\u529b\uff0c\u8f15\u9b06\u61c9\u5c0d\u5404\u985e\u6578\u64da\u6311\u6230\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-194359","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194359","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=194359"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194359\/revisions"}],"predecessor-version":[{"id":194360,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194359\/revisions\/194360"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=194359"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=194359"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=194359"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}