{"id":196338,"date":"2024-11-13T22:22:18","date_gmt":"2024-11-13T14:22:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/196338\/"},"modified":"2024-11-13T22:22:20","modified_gmt":"2024-11-13T14:22:20","slug":"%e8%ad%89%e5%88%b8%e8%a1%8c%e6%a5%ad%e6%8b%9b%e8%81%98sql%e6%8a%80%e8%83%bd%e9%9d%a2%e8%a9%a6%e6%94%bb%e7%95%a5-%e8%ad%89%e5%88%b8%e5%af%a6%e6%96%bd%e6%95%b8%e6%93%9a%e5%ba%absql%e9%9d%a2%e8%a9%a6","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/196338\/","title":{"rendered":"\u8b49\u5238\u884c\u696d\u62db\u8058:SQL\u6280\u80fd\u9762\u8a66\u653b\u7565 (\u8b49\u5238\u5be6\u65bd\u6578\u64da\u5eabsql\u9762\u8a66)"},"content":{"rendered":"<h1 id=\"%e8%ad%89%e5%88%b8%e8%a1%8c%e6%a5%ad%e6%8b%9b%e8%81%98sql%e6%8a%80%e8%83%bd%e9%9d%a2%e8%a9%a6%e6%94%bb%e7%95%a5-%e8%ad%89%e5%88%b8%e5%af%a6%e6%96%bd%e6%95%b8%e6%93%9a%e5%ba%absql%e9%9d%a2%e8%a9%a6-mkaTHLNOKd\">\u8b49\u5238\u884c\u696d\u62db\u8058:SQL\u6280\u80fd\u9762\u8a66\u653b\u7565 (\u8b49\u5238\u5be6\u65bd\u6578\u64da\u5eabSQL\u9762\u8a66)<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u8b49\u5238\u884c\u696d\u4e2d\uff0c\u6578\u64da\u7684\u7ba1\u7406\u548c\u5206\u6790\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002\u96a8\u8457\u91d1\u878d\u79d1\u6280\u7684\u8fc5\u901f\u767c\u5c55\uff0c\u4f01\u696d\u5c0d\u65bc\u5177\u5099SQL\u6280\u80fd\u7684\u4eba\u624d\u9700\u6c42\u65e5\u76ca\u589e\u52a0\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5728\u8b49\u5238\u884c\u696d\u4e2d\uff0c\u5982\u4f55\u6e96\u5099SQL\u6280\u80fd\u7684\u9762\u8a66\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u5efa\u8b70\u548c\u7bc4\u4f8b\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bcsql%e6%8a%80%e8%83%bd%e5%b0%8d%e6%96%bc%e8%ad%89%e5%88%b8%e8%a1%8c%e6%a5%ad%e8%87%b3%e9%97%9c%e9%87%8d%e8%a6%81-mkaTHLNOKd\">\u70ba\u4ec0\u9ebcSQL\u6280\u80fd\u5c0d\u65bc\u8b49\u5238\u884c\u696d\u81f3\u95dc\u91cd\u8981<\/h2>\n<p>SQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u662f\u7528\u65bc\u7ba1\u7406\u548c\u64cd\u4f5c\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7684\u6a19\u6e96\u8a9e\u8a00\u3002\u5728\u8b49\u5238\u884c\u696d\u4e2d\uff0c\u6578\u64da\u5eab\u901a\u5e38\u7528\u65bc\u5b58\u5132\u4ea4\u6613\u8a18\u9304\u3001\u5ba2\u6236\u4fe1\u606f\u548c\u5e02\u5834\u6578\u64da\u3002\u5177\u5099SQL\u6280\u80fd\u7684\u5c08\u696d\u4eba\u58eb\u80fd\u5920\u6709\u6548\u5730\u67e5\u8a62\u3001\u66f4\u65b0\u548c\u7ba1\u7406\u9019\u4e9b\u6578\u64da\uff0c\u5f9e\u800c\u652f\u6301\u696d\u52d9\u6c7a\u7b56\u548c\u98a8\u96aa\u7ba1\u7406\u3002<\/p>\n<h2 id=\"%e9%9d%a2%e8%a9%a6%e5%89%8d%e7%9a%84%e6%ba%96%e5%82%99-mkaTHLNOKd\">\u9762\u8a66\u524d\u7684\u6e96\u5099<\/h2>\n<p>\u5728\u9762\u8a66\u4e4b\u524d\uff0c\u61c9\u8a72\u9032\u884c\u5145\u5206\u7684\u6e96\u5099\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5efa\u8b70\uff1a<\/p>\n<ul>\n<li><strong>\u719f\u6089\u57fa\u672c\u6982\u5ff5\uff1a<\/strong>\u4e86\u89e3SQL\u7684\u57fa\u672c\u8a9e\u6cd5\u548c\u6982\u5ff5\uff0c\u5305\u62ecSELECT\u3001INSERT\u3001UPDATE\u3001DELETE\u7b49\u64cd\u4f5c\u3002<\/li>\n<li><strong>\u638c\u63e1\u6578\u64da\u5eab\u8a2d\u8a08\uff1a<\/strong>\u4e86\u89e3\u6578\u64da\u5eab\u7684\u57fa\u672c\u7d50\u69cb\uff0c\u5982\u8868\u3001\u7d22\u5f15\u3001\u4e3b\u9375\u548c\u5916\u9375\u7b49\u3002<\/li>\n<li><strong>\u7df4\u7fd2\u67e5\u8a62\uff1a<\/strong>\u901a\u904e\u5be6\u969b\u7684\u6578\u64da\u96c6\u9032\u884c\u67e5\u8a62\u7df4\u7fd2\uff0c\u719f\u6089\u5982\u4f55\u64b0\u5beb\u8907\u96dc\u7684\u67e5\u8a62\u8a9e\u53e5\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%b8%b8%e8%a6%8b%e7%9a%84sql%e9%9d%a2%e8%a9%a6%e5%95%8f%e9%a1%8c-mkaTHLNOKd\">\u5e38\u898b\u7684SQL\u9762\u8a66\u554f\u984c<\/h2>\n<p>\u5728\u9762\u8a66\u4e2d\uff0c\u8003\u5b98\u53ef\u80fd\u6703\u554f\u5230\u4e00\u4e9b\u5e38\u898b\u7684SQL\u554f\u984c\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u4f8b\u5b50\uff1a<\/p>\n<h3 id=\"1-%e5%9f%ba%e6%9c%ac%e6%9f%a5%e8%a9%a2-mkaTHLNOKd\">1. \u57fa\u672c\u67e5\u8a62<\/h3>\n<pre><code>SELECT * FROM customers WHERE country = 'Hong Kong';<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u4f86\u81ea\u9999\u6e2f\u7684\u5ba2\u6236\u4fe1\u606f\u3002<\/p>\n<h3 id=\"2-%e8%81%9a%e5%90%88%e5%87%bd%e6%95%b8-mkaTHLNOKd\">2. \u805a\u5408\u51fd\u6578<\/h3>\n<pre><code>SELECT COUNT(*) FROM transactions WHERE amount &gt; 1000;<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u8a08\u7b97\u6240\u6709\u91d1\u984d\u8d85\u904e1000\u7684\u4ea4\u6613\u6578\u91cf\u3002<\/p>\n<h3 id=\"3-%e9%80%a3%e6%8e%a5%e6%9f%a5%e8%a9%a2-mkaTHLNOKd\">3. \u9023\u63a5\u67e5\u8a62<\/h3>\n<pre><code>SELECT c.name, t.amount \nFROM customers c \nJOIN transactions t ON c.id = t.customer_id;<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u8fd4\u56de\u6bcf\u4f4d\u5ba2\u6236\u53ca\u5176\u4ea4\u6613\u91d1\u984d\u7684\u5217\u8868\u3002<\/p>\n<h2 id=\"%e9%9d%a2%e8%a9%a6%e4%b8%ad%e7%9a%84%e5%af%a6%e8%b8%90%e7%92%b0%e7%af%80-mkaTHLNOKd\">\u9762\u8a66\u4e2d\u7684\u5be6\u8e10\u74b0\u7bc0<\/h2>\n<p>\u8a31\u591a\u9762\u8a66\u6703\u5305\u62ec\u5be6\u969b\u7684\u7de8\u78bc\u74b0\u7bc0\uff0c\u8003\u751f\u9700\u8981\u5728\u767d\u677f\u4e0a\u6216\u96fb\u8166\u4e0a\u64b0\u5bebSQL\u67e5\u8a62\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5efa\u8b70\uff1a<\/p>\n<ul>\n<li><strong>\u6e05\u6670\u8868\u9054\uff1a<\/strong>\u5728\u64b0\u5beb\u67e5\u8a62\u6642\uff0c\u6e05\u6670\u5730\u8868\u9054\u4f60\u7684\u601d\u8def\uff0c\u4e26\u89e3\u91cb\u6bcf\u4e00\u6b65\u7684\u539f\u56e0\u3002<\/li>\n<li><strong>\u6e2c\u8a66\u67e5\u8a62\uff1a<\/strong>\u5982\u679c\u6709\u6a5f\u6703\uff0c\u6e2c\u8a66\u4f60\u7684\u67e5\u8a62\u4ee5\u78ba\u4fdd\u5176\u6b63\u78ba\u6027\u3002<\/li>\n<li><strong>\u512a\u5316\u67e5\u8a62\uff1a<\/strong>\u8003\u616e\u67e5\u8a62\u7684\u6027\u80fd\uff0c\u4e26\u63d0\u51fa\u53ef\u80fd\u7684\u512a\u5316\u65b9\u6848\u3002<\/li>\n<\/ul>\n<h2 id=\"%e9%9d%a2%e8%a9%a6%e5%be%8c%e7%9a%84%e8%b7%9f%e9%80%b2-mkaTHLNOKd\">\u9762\u8a66\u5f8c\u7684\u8ddf\u9032<\/h2>\n<p>\u9762\u8a66\u7d50\u675f\u5f8c\uff0c\u8a18\u5f97\u767c\u9001\u611f\u8b1d\u4fe1\uff0c\u8868\u9054\u5c0d\u9762\u8a66\u6a5f\u6703\u7684\u611f\u6fc0\u4e4b\u60c5\u3002\u9019\u4e0d\u50c5\u662f\u79ae\u8c8c\u7684\u8868\u73fe\uff0c\u4e5f\u80fd\u8b93\u4f60\u5728\u8003\u5b98\u5fc3\u4e2d\u7559\u4e0b\u826f\u597d\u7684\u5370\u8c61\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-mkaTHLNOKd\">\u7e3d\u7d50<\/h2>\n<p>\u5728\u8b49\u5238\u884c\u696d\u4e2d\uff0cSQL\u6280\u80fd\u662f\u6c42\u8077\u8005\u5fc5\u5099\u7684\u80fd\u529b\u4e4b\u4e00\u3002\u901a\u904e\u5145\u5206\u7684\u6e96\u5099\u548c\u5be6\u8e10\uff0c\u61c9\u8058\u8005\u53ef\u4ee5\u5728\u9762\u8a66\u4e2d\u812b\u7a4e\u800c\u51fa\u3002\u7121\u8ad6\u662f\u57fa\u672c\u67e5\u8a62\u9084\u662f\u8907\u96dc\u7684\u6578\u64da\u64cd\u4f5c\uff0c\u638c\u63e1SQL\u90fd\u80fd\u5e6b\u52a9\u4f60\u5728\u9019\u500b\u7af6\u722d\u6fc0\u70c8\u7684\u884c\u696d\u4e2d\u53d6\u5f97\u6210\u529f\u3002<\/p>\n<p>\u5982\u679c\u4f60\u5c0d\u65bc\u4f3a\u670d\u5668\u7ba1\u7406\u548c\u6578\u64da\u5eab\u7684\u9700\u6c42\u6709\u8208\u8da3\uff0c\u8003\u616e\u4f7f\u7528\u6211\u5011\u7684<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u89e3\u6c7a\u65b9\u6848\uff0c\u70ba\u4f60\u7684\u696d\u52d9\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u638c\u63e1\u8b49\u5238\u884c\u696dSQL\u6280\u80fd\u9762\u8a66\u653b\u7565\uff0c\u63d0\u5347\u6578\u64da\u5eab\u9762\u8a66\u8868\u73fe\uff0c\u52a9\u4f60\u6210\u529f\u9032\u5165\u8b49\u5238\u5be6\u65bd\u9818\u57df\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-196338","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/196338","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=196338"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/196338\/revisions"}],"predecessor-version":[{"id":196339,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/196338\/revisions\/196339"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=196338"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=196338"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=196338"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}