{"id":173425,"date":"2024-11-07T17:55:34","date_gmt":"2024-11-07T09:55:34","guid":{"rendered":"https:\/\/server.hk\/cnblog\/173425\/"},"modified":"2024-11-07T17:55:35","modified_gmt":"2024-11-07T09:55:35","slug":"%e5%a6%82%e4%bd%95%e6%9b%b4%e9%ab%98%e6%95%88%e5%9c%b0%e5%88%a9%e7%94%a8mdb%e6%95%b8%e6%93%9a%e5%ba%ab%e6%90%9c%e7%b4%a2%ef%bc%9f-mdb%e6%95%b8%e6%93%9a%e5%ba%ab%e6%90%9c%e7%b4%a2","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/173425\/","title":{"rendered":"\u5982\u4f55\u66f4\u9ad8\u6548\u5730\u5229\u7528mdb\u6578\u64da\u5eab\u641c\u7d22\uff1f (mdb\u6578\u64da\u5eab\u641c\u7d22)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e6%9b%b4%e9%ab%98%e6%95%88%e5%9c%b0%e5%88%a9%e7%94%a8mdb%e6%95%b8%e6%93%9a%e5%ba%ab%e6%90%9c%e7%b4%a2%ef%bc%9f-aMGOZRrjVF\">\u5982\u4f55\u66f4\u9ad8\u6548\u5730\u5229\u7528MDB\u6578\u64da\u5eab\u641c\u7d22\uff1f<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u6709\u6548\u7ba1\u7406\u548c\u641c\u7d22\u80fd\u529b\u81f3\u95dc\u91cd\u8981\u3002MDB\uff08Microsoft Access Database\uff09\u662f\u4e00\u7a2e\u5e38\u898b\u7684\u6578\u64da\u5eab\u683c\u5f0f\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5c0f\u578b\u548c\u4e2d\u578b\u61c9\u7528\u7a0b\u5e8f\u4e2d\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u66f4\u9ad8\u6548\u5730\u5229\u7528MDB\u6578\u64da\u5eab\u9032\u884c\u641c\u7d22\uff0c\u5e6b\u52a9\u7528\u6236\u63d0\u9ad8\u6578\u64da\u6aa2\u7d22\u7684\u6548\u7387\u3002<\/p>\n<h2 id=\"%e4%ba%86%e8%a7%a3mdb%e6%95%b8%e6%93%9a%e5%ba%ab%e7%b5%90%e6%a7%8b-aMGOZRrjVF\">\u4e86\u89e3MDB\u6578\u64da\u5eab\u7d50\u69cb<\/h2>\n<p>\u5728\u9032\u884c\u6709\u6548\u641c\u7d22\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u4e86\u89e3MDB\u6578\u64da\u5eab\u7684\u57fa\u672c\u7d50\u69cb\u3002MDB\u6578\u64da\u5eab\u7531\u591a\u500b\u8868\u7d44\u6210\uff0c\u6bcf\u500b\u8868\u5305\u542b\u591a\u500b\u5b57\u6bb5\u3002\u9019\u4e9b\u5b57\u6bb5\u53ef\u4ee5\u662f\u6587\u672c\u3001\u6578\u5b57\u3001\u65e5\u671f\u7b49\u985e\u578b\u3002\u4e86\u89e3\u6578\u64da\u7684\u7d44\u7e54\u65b9\u5f0f\u5c07\u6709\u52a9\u65bc\u5236\u5b9a\u66f4\u6709\u6548\u7684\u641c\u7d22\u7b56\u7565\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e6%9f%a5%e8%a9%a2%e5%8a%9f%e8%83%bd-aMGOZRrjVF\">\u4f7f\u7528\u67e5\u8a62\u529f\u80fd<\/h2>\n<p>MDB\u6578\u64da\u5eab\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u67e5\u8a62\u529f\u80fd\uff0c\u5141\u8a31\u7528\u6236\u6839\u64da\u7279\u5b9a\u689d\u4ef6\u6aa2\u7d22\u6578\u64da\u3002\u4f7f\u7528\u67e5\u8a62\u6642\uff0c\u53ef\u4ee5\u8003\u616e\u4ee5\u4e0b\u5e7e\u7a2e\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li><strong>\u9078\u64c7\u67e5\u8a62\uff08Select Query\uff09<\/strong>\uff1a\u9019\u662f\u6700\u57fa\u672c\u7684\u67e5\u8a62\u985e\u578b\uff0c\u7528\u65bc\u5f9e\u4e00\u500b\u6216\u591a\u500b\u8868\u4e2d\u9078\u64c7\u6578\u64da\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0bSQL\u8a9e\u53e5\u53ef\u4ee5\u7528\u4f86\u9078\u64c7\u6240\u6709\u54e1\u5de5\u7684\u59d3\u540d\u548c\u5de5\u8cc7\uff1a<\/li>\n<pre><code>SELECT Name, Salary FROM Employees;<\/code><\/pre>\n<li><strong>\u53c3\u6578\u67e5\u8a62\uff08Parameter Query\uff09<\/strong>\uff1a\u9019\u7a2e\u67e5\u8a62\u5141\u8a31\u7528\u6236\u5728\u904b\u884c\u67e5\u8a62\u6642\u8f38\u5165\u53c3\u6578\uff0c\u5f9e\u800c\u7372\u5f97\u52d5\u614b\u7d50\u679c\u3002\u4f8b\u5982\uff1a<\/li>\n<pre><code>SELECT * FROM Employees WHERE Department = [\u8acb\u8f38\u5165\u90e8\u9580\u540d\u7a31];<\/code><\/pre>\n<li><strong>\u805a\u5408\u67e5\u8a62\uff08Aggregate Query\uff09<\/strong>\uff1a\u7528\u65bc\u8a08\u7b97\u7e3d\u548c\u3001\u5e73\u5747\u503c\u7b49\u7d71\u8a08\u4fe1\u606f\u3002\u4f8b\u5982\uff0c\u8a08\u7b97\u6bcf\u500b\u90e8\u9580\u7684\u5e73\u5747\u5de5\u8cc7\uff1a<\/li>\n<pre><code>SELECT Department, AVG(Salary) AS AverageSalary FROM Employees GROUP BY Department;<\/code><\/pre>\n<\/ul>\n<h2 id=\"%e7%b4%a2%e5%bc%95%e7%9a%84%e4%bd%bf%e7%94%a8-aMGOZRrjVF\">\u7d22\u5f15\u7684\u4f7f\u7528<\/h2>\n<p>\u70ba\u4e86\u63d0\u9ad8\u641c\u7d22\u6548\u7387\uff0c\u53ef\u4ee5\u5728MDB\u6578\u64da\u5eab\u4e2d\u70ba\u5e38\u7528\u7684\u67e5\u8a62\u5b57\u6bb5\u5275\u5efa\u7d22\u5f15\u3002\u7d22\u5f15\u53ef\u4ee5\u52a0\u5feb\u6578\u64da\u6aa2\u7d22\u901f\u5ea6\uff0c\u4f46\u4e5f\u6703\u589e\u52a0\u6578\u64da\u5eab\u7684\u5b58\u5132\u9700\u6c42\u3002\u56e0\u6b64\uff0c\u61c9\u6839\u64da\u5be6\u969b\u9700\u6c42\u8b39\u614e\u9078\u64c7\u7d22\u5f15\u5b57\u6bb5\u3002<\/p>\n<h3 id=\"%e5%89%b5%e5%bb%ba%e7%b4%a2%e5%bc%95%e7%9a%84%e7%a4%ba%e4%be%8b-aMGOZRrjVF\">\u5275\u5efa\u7d22\u5f15\u7684\u793a\u4f8b<\/h3>\n<p>\u4ee5\u4e0b\u662f\u5275\u5efa\u7d22\u5f15\u7684SQL\u8a9e\u53e5\u793a\u4f8b\uff1a<\/p>\n<pre><code>CREATE INDEX idx_Department ON Employees(Department);<\/code><\/pre>\n<h2 id=\"%e5%84%aa%e5%8c%96%e6%9f%a5%e8%a9%a2%e6%80%a7%e8%83%bd-aMGOZRrjVF\">\u512a\u5316\u67e5\u8a62\u6027\u80fd<\/h2>\n<p>\u5728\u9032\u884cMDB\u6578\u64da\u5eab\u641c\u7d22\u6642\uff0c\u512a\u5316\u67e5\u8a62\u6027\u80fd\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u512a\u5316\u5efa\u8b70\uff1a<\/p>\n<ul>\n<li><strong>\u907f\u514d\u4f7f\u7528SELECT *<\/strong>\uff1a\u660e\u78ba\u6307\u5b9a\u6240\u9700\u7684\u5b57\u6bb5\u53ef\u4ee5\u6e1b\u5c11\u6578\u64da\u50b3\u8f38\u91cf\uff0c\u63d0\u9ad8\u67e5\u8a62\u901f\u5ea6\u3002<\/li>\n<li><strong>\u4f7f\u7528WHERE\u5b50\u53e5<\/strong>\uff1a\u901a\u904e\u9650\u5236\u8fd4\u56de\u7684\u8a18\u9304\u6578\u91cf\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/li>\n<li><strong>\u5b9a\u671f\u7dad\u8b77\u6578\u64da\u5eab<\/strong>\uff1a\u5b9a\u671f\u58d3\u7e2e\u548c\u4fee\u5fa9MDB\u6578\u64da\u5eab\u53ef\u4ee5\u63d0\u9ad8\u5176\u6027\u80fd\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-aMGOZRrjVF\">\u7d50\u8ad6<\/h2>\n<p>\u6709\u6548\u5730\u5229\u7528MDB\u6578\u64da\u5eab\u9032\u884c\u641c\u7d22\u9700\u8981\u5c0d\u6578\u64da\u7d50\u69cb\u7684\u6df1\u5165\u7406\u89e3\uff0c\u9748\u6d3b\u904b\u7528\u67e5\u8a62\u529f\u80fd\uff0c\u4e26\u9032\u884c\u9069\u7576\u7684\u6027\u80fd\u512a\u5316\u3002\u901a\u904e\u9019\u4e9b\u65b9\u6cd5\uff0c\u7528\u6236\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u6578\u64da\u6aa2\u7d22\u7684\u6548\u7387\uff0c\u5f9e\u800c\u66f4\u597d\u5730\u652f\u6301\u696d\u52d9\u6c7a\u7b56\u548c\u64cd\u4f5c\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u95dc\u65bc\u6578\u64da\u5eab\u7ba1\u7406\u548c\u9ad8\u6548\u641c\u7d22\u7684\u8cc7\u8a0a\uff0c\u60a8\u53ef\u4ee5\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\uff0c\u7372\u53d6\u66f4\u591a\u8cc7\u6e90\u548c\u652f\u6301\u3002\u7121\u8ad6\u662f\u9078\u64c7<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u63d0\u4f9b\u5c08\u696d\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u52a9\u60a8\u5728\u6578\u64da\u7ba1\u7406\u4e0a\u66f4\u4e0a\u4e00\u5c64\u6a13\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u66f4\u9ad8\u6548\u5730\u5229\u7528mdb\u6578\u64da\u5eab\u9032\u884c\u641c\u7d22\uff0c\u63d0\u5347\u67e5\u8a62\u901f\u5ea6\u8207\u6e96\u78ba\u6027\uff0c\u512a\u5316\u6578\u64da\u7ba1\u7406\u6d41\u7a0b\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-173425","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/173425","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=173425"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/173425\/revisions"}],"predecessor-version":[{"id":173426,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/173425\/revisions\/173426"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=173425"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=173425"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=173425"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}