{"id":143781,"date":"2024-11-01T01:11:23","date_gmt":"2024-10-31T17:11:23","guid":{"rendered":"https:\/\/server.hk\/cnblog\/143781\/"},"modified":"2024-11-01T01:11:24","modified_gmt":"2024-10-31T17:11:24","slug":"sql-%e7%9a%84%e5%b7%ae%e7%95%b0%ef%bc%9a%e4%b8%8d%e5%90%8c%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e6%af%94%e8%bc%83%ef%bc%88%e4%b8%8d%e5%90%8c%e6%95%b8%e6%93%9a%e5%ba%ab-sql-%e5%8d%80%e5%88%a5%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/143781\/","title":{"rendered":"SQL \u7684\u5dee\u7570\uff1a\u4e0d\u540c\u6578\u64da\u5eab\u7684\u6bd4\u8f03\uff08\u4e0d\u540c\u6578\u64da\u5eab sql \u5340\u5225\uff09"},"content":{"rendered":"<h1 id=\"sql-%e7%9a%84%e5%b7%ae%e7%95%b0%ef%bc%9a%e4%b8%8d%e5%90%8c%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e6%af%94%e8%bc%83%ef%bc%88%e4%b8%8d%e5%90%8c%e6%95%b8%e6%93%9a%e5%ba%ab-sql-%e5%8d%80%e5%88%a5%ef%bc%89-xzDRRVVGax\">SQL \u7684\u5dee\u7570\uff1a\u4e0d\u540c\u6578\u64da\u5eab\u7684\u6bd4\u8f03\uff08\u4e0d\u540c\u6578\u64da\u5eab SQL \u5340\u5225\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u6642\u4ee3\uff0cSQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u662f\u8207\u6578\u64da\u5eab\u4ea4\u4e92\u7684\u4e3b\u8981\u5de5\u5177\u3002\u4e0d\u540c\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u96d6\u7136\u90fd\u4f7f\u7528 SQL\uff0c\u4f46\u5728\u8a9e\u6cd5\u3001\u529f\u80fd\u548c\u7279\u6027\u4e0a\u5b58\u5728\u986f\u8457\u5dee\u7570\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5e7e\u7a2e\u6d41\u884c\u7684\u6578\u64da\u5eab\u7cfb\u7d71\uff0c\u5305\u62ec MySQL\u3001PostgreSQL\u3001SQLite \u548c Microsoft SQL Server\uff0c\u4e26\u6bd4\u8f03\u5b83\u5011\u5728 SQL \u8a9e\u6cd5\u548c\u529f\u80fd\u4e0a\u7684\u4e0d\u540c\u4e4b\u8655\u3002<\/p>\n<h2 id=\"1-mysql-xzDRRVVGax\">1. MySQL<\/h2>\n<p>MySQL \u662f\u4e00\u500b\u958b\u6e90\u7684\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u7db2\u7d61\u61c9\u7528\u4e2d\u3002MySQL \u7684 SQL \u8a9e\u6cd5\u76f8\u5c0d\u7c21\u55ae\uff0c\u9069\u5408\u521d\u5b78\u8005\u4f7f\u7528\u3002\u4ee5\u4e0b\u662f MySQL \u7684\u4e00\u4e9b\u7279\u9ede\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u985e\u578b\uff1a<\/strong>MySQL \u652f\u6301\u591a\u7a2e\u6578\u64da\u985e\u578b\uff0c\u5305\u62ec\u6574\u6578\u3001\u6d6e\u9ede\u6578\u3001\u5b57\u7b26\u4e32\u548c\u65e5\u671f\u7b49\u3002<\/li>\n<li><strong>\u67e5\u8a62\u8a9e\u6cd5\uff1a<\/strong>MySQL \u7684\u67e5\u8a62\u8a9e\u6cd5\u7c21\u6f54\u660e\u4e86\uff0c\u4f8b\u5982\uff1a<\/li>\n<\/ul>\n<pre><code>SELECT * FROM users WHERE age &gt; 18;<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u5e74\u9f61\u5927\u65bc 18 \u7684\u7528\u6236\u3002<\/p>\n<h2 id=\"2-postgresql-xzDRRVVGax\">2. PostgreSQL<\/h2>\n<p>PostgreSQL \u662f\u4e00\u500b\u529f\u80fd\u5f37\u5927\u7684\u958b\u6e90\u95dc\u4fc2\u578b\u6578\u64da\u5eab\uff0c\u7279\u5225\u9069\u5408\u9700\u8981\u8907\u96dc\u67e5\u8a62\u548c\u6578\u64da\u5b8c\u6574\u6027\u7684\u61c9\u7528\u3002PostgreSQL \u7684 SQL \u8a9e\u6cd5\u6bd4 MySQL \u66f4\u52a0\u9748\u6d3b\uff0c\u652f\u6301\u8a31\u591a\u9ad8\u7d1a\u529f\u80fd\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u985e\u578b\uff1a<\/strong>PostgreSQL \u652f\u6301\u81ea\u5b9a\u7fa9\u6578\u64da\u985e\u578b\u548c\u8907\u96dc\u6578\u64da\u7d50\u69cb\uff0c\u5982 JSON \u548c XML\u3002<\/li>\n<li><strong>\u67e5\u8a62\u8a9e\u6cd5\uff1a<\/strong>PostgreSQL \u652f\u6301\u7a97\u53e3\u51fd\u6578\u548c\u516c\u7528\u8868\u8868\u9054\u5f0f\uff08CTE\uff09\uff0c\u4f8b\u5982\uff1a<\/li>\n<\/ul>\n<pre><code>WITH ranked_users AS (\n    SELECT *, RANK() OVER (ORDER BY age DESC) AS rank\n    FROM users\n)\nSELECT * FROM ranked_users WHERE rank &lt;= 10;<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u5e74\u9f61\u6392\u540d\u524d\u5341\u7684\u7528\u6236\u3002<\/p>\n<h2 id=\"3-sqlite-xzDRRVVGax\">3. SQLite<\/h2>\n<p>SQLite \u662f\u4e00\u500b\u8f15\u91cf\u7d1a\u7684\u5d4c\u5165\u5f0f\u6578\u64da\u5eab\uff0c\u9069\u5408\u5c0f\u578b\u61c9\u7528\u548c\u79fb\u52d5\u8a2d\u5099\u3002SQLite \u7684 SQL \u8a9e\u6cd5\u7c21\u55ae\uff0c\u4e26\u4e14\u4e0d\u9700\u8981\u5b89\u88dd\u670d\u52d9\u5668\u3002\u4ee5\u4e0b\u662f SQLite \u7684\u4e00\u4e9b\u7279\u9ede\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u985e\u578b\uff1a<\/strong>SQLite \u7684\u6578\u64da\u985e\u578b\u8f03\u70ba\u9748\u6d3b\uff0c\u652f\u6301\u52d5\u614b\u985e\u578b\u7cfb\u7d71\u3002<\/li>\n<li><strong>\u67e5\u8a62\u8a9e\u6cd5\uff1a<\/strong>SQLite \u7684\u67e5\u8a62\u8a9e\u6cd5\u8207 MySQL \u985e\u4f3c\uff0c\u4f8b\u5982\uff1a<\/li>\n<\/ul>\n<pre><code>SELECT name FROM products WHERE price &lt; 100;<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u50f9\u683c\u4f4e\u65bc 100 \u7684\u7522\u54c1\u540d\u7a31\u3002<\/p>\n<h2 id=\"4-microsoft-sql-server-xzDRRVVGax\">4. Microsoft SQL Server<\/h2>\n<p>Microsoft SQL Server \u662f\u4e00\u500b\u5546\u696d\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u4f01\u696d\u74b0\u5883\u3002\u5b83\u7684 SQL \u8a9e\u6cd5\u8207\u5176\u4ed6\u6578\u64da\u5eab\u7cfb\u7d71\u6709\u6240\u4e0d\u540c\uff0c\u4e26\u63d0\u4f9b\u4e86\u8a31\u591a\u4f01\u696d\u7d1a\u529f\u80fd\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u985e\u578b\uff1a<\/strong>SQL Server \u652f\u6301\u591a\u7a2e\u6578\u64da\u985e\u578b\uff0c\u5305\u62ec XML \u548c\u5730\u7406\u7a7a\u9593\u6578\u64da\u985e\u578b\u3002<\/li>\n<li><strong>\u67e5\u8a62\u8a9e\u6cd5\uff1a<\/strong>SQL Server \u652f\u6301\u5b58\u5132\u904e\u7a0b\u548c\u89f8\u767c\u5668\uff0c\u4f8b\u5982\uff1a<\/li>\n<\/ul>\n<pre><code>CREATE PROCEDURE GetUserById\n    @UserId INT\nAS\nBEGIN\n    SELECT * FROM users WHERE id = @UserId;\nEND;<\/code><\/pre>\n<p>\u9019\u6bb5\u4ee3\u78bc\u5b9a\u7fa9\u4e86\u4e00\u500b\u5b58\u5132\u904e\u7a0b\uff0c\u7528\u65bc\u6839\u64da\u7528\u6236 ID \u7372\u53d6\u7528\u6236\u4fe1\u606f\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-xzDRRVVGax\">\u7e3d\u7d50<\/h2>\n<p>\u4e0d\u540c\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u5728 SQL \u8a9e\u6cd5\u548c\u529f\u80fd\u4e0a\u5b58\u5728\u986f\u8457\u5dee\u7570\u3002MySQL \u9069\u5408\u521d\u5b78\u8005\uff0cPostgreSQL \u63d0\u4f9b\u9ad8\u7d1a\u529f\u80fd\uff0cSQLite \u8f15\u91cf\u4e14\u6613\u65bc\u4f7f\u7528\uff0c\u800c Microsoft SQL Server \u5247\u9069\u5408\u4f01\u696d\u7d1a\u61c9\u7528\u3002\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u53d6\u6c7a\u65bc\u5177\u9ad4\u7684\u9700\u6c42\u548c\u4f7f\u7528\u5834\u666f\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u904b\u884c\u60a8\u7684\u6578\u64da\u5eab\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u4e0d\u540c\u6578\u64da\u5eab\u7684 SQL \u5dee\u7570\uff0c\u4e86\u89e3\u5404\u7a2e\u6578\u64da\u5eab\u7cfb\u7d71\u7684\u7279\u9ede\u8207\u512a\u7f3a\u9ede\uff0c\u52a9\u60a8\u9078\u64c7\u6700\u9069\u5408\u7684\u89e3\u6c7a\u65b9\u6848\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-143781","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/143781","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=143781"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/143781\/revisions"}],"predecessor-version":[{"id":143782,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/143781\/revisions\/143782"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=143781"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=143781"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=143781"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}