{"id":61133,"date":"2024-10-13T08:42:15","date_gmt":"2024-10-13T00:42:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/61133\/"},"modified":"2024-10-13T08:42:15","modified_gmt":"2024-10-13T00:42:15","slug":"delphisql-%e5%af%a6%e7%8f%be%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e5%90%88%e4%bd%b5%e8%a1%8c-delphisql%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e5%90%88%e4%bd%b5%e8%a1%8c","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/61133\/","title":{"rendered":"DelphiSQL \u5be6\u73fe\u6578\u64da\u5eab\u8868\u5408\u4f75\u884c (delphisql\u6578\u64da\u5eab\u8868\u5408\u4f75\u884c)"},"content":{"rendered":"<h1 id=\"delphisql-%e5%af%a6%e7%8f%be%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e5%90%88%e4%bd%b5%e8%a1%8c-sIUcpxWGgL\">DelphiSQL \u5be6\u73fe\u6578\u64da\u5eab\u8868\u5408\u4f75\u884c<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u5408\u4f75\u884c\u662f\u4e00\u500b\u5e38\u898b\u7684\u9700\u6c42\uff0c\u5c24\u5176\u662f\u5728\u8655\u7406\u91cd\u8907\u6578\u64da\u6216\u9700\u8981\u6574\u5408\u591a\u500b\u8a18\u9304\u7684\u60c5\u6cc1\u4e0b\u3002DelphiSQL \u63d0\u4f9b\u4e86\u4e00\u4e9b\u5f37\u5927\u7684\u5de5\u5177\u4f86\u5be6\u73fe\u9019\u4e00\u529f\u80fd\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528 DelphiSQL \u4f86\u5408\u4f75\u6578\u64da\u5eab\u8868\u4e2d\u7684\u884c\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e8%a1%8c%e5%90%88%e4%bd%b5%ef%bc%9f-sIUcpxWGgL\">\u4ec0\u9ebc\u662f\u884c\u5408\u4f75\uff1f<\/h2>\n<p>\u884c\u5408\u4f75\u662f\u6307\u5c07\u591a\u500b\u884c\u7684\u6578\u64da\u6574\u5408\u5230\u4e00\u500b\u884c\u4e2d\uff0c\u901a\u5e38\u662f\u57fa\u65bc\u67d0\u4e9b\u689d\u4ef6\u6216\u5b57\u6bb5\u7684\u76f8\u4f3c\u6027\u3002\u9019\u5728\u6578\u64da\u6e05\u7406\u548c\u5831\u544a\u751f\u6210\u4e2d\u975e\u5e38\u6709\u7528\u3002\u4f8b\u5982\uff0c\u7576\u4e00\u500b\u5ba2\u6236\u5728\u4e0d\u540c\u6642\u9593\u4e0b\u4e86\u591a\u500b\u8a02\u55ae\u6642\uff0c\u6211\u5011\u53ef\u80fd\u5e0c\u671b\u5c07\u9019\u4e9b\u8a02\u55ae\u5408\u4f75\u70ba\u4e00\u500b\u8a18\u9304\uff0c\u4ee5\u4fbf\u66f4\u6e05\u6670\u5730\u5c55\u793a\u5ba2\u6236\u7684\u7e3d\u8a02\u55ae\u6578\u91cf\u548c\u91d1\u984d\u3002<\/p>\n<h2 id=\"delphisql-%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-sIUcpxWGgL\">DelphiSQL \u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>\u5728 DelphiSQL \u4e2d\uff0c\u5408\u4f75\u884c\u7684\u64cd\u4f5c\u901a\u5e38\u6d89\u53ca\u5230\u4f7f\u7528\u805a\u5408\u51fd\u6578\uff08\u5982 SUM\u3001COUNT\u3001AVG \u7b49\uff09\u548c GROUP BY \u5b50\u53e5\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u57fa\u672c\u7684 SQL \u67e5\u8a62\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5408\u4f75\u884c\uff1a<\/p>\n<pre><code>\nSELECT \u5ba2\u6236ID, \n       COUNT(\u8a02\u55aeID) AS \u7e3d\u8a02\u55ae\u6578, \n       SUM(\u91d1\u984d) AS \u7e3d\u91d1\u984d\nFROM \u8a02\u55ae\u8868\nGROUP BY \u5ba2\u6236ID;\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u6839\u64da\u5ba2\u6236ID\u4f86\u5408\u4f75\u8a02\u55ae\uff0c\u8a08\u7b97\u6bcf\u4f4d\u5ba2\u6236\u7684\u7e3d\u8a02\u55ae\u6578\u548c\u7e3d\u91d1\u984d\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8-delphisql-%e5%af%a6%e7%8f%be%e8%a1%8c%e5%90%88%e4%bd%b5-sIUcpxWGgL\">\u4f7f\u7528 DelphiSQL \u5be6\u73fe\u884c\u5408\u4f75<\/h2>\n<p>\u5728 Delphi \u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 TSQLQuery \u7d44\u4ef6\u4f86\u57f7\u884c SQL \u67e5\u8a62\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5728 Delphi \u4e2d\u5be6\u73fe\u884c\u5408\u4f75\uff1a<\/p>\n<pre><code>\nvar\n  SQLQuery: TSQLQuery;\nbegin\n  SQLQuery := TSQLQuery.Create(nil);\n  try\n    SQLQuery.SQLConnection := YourSQLConnection; \/\/ \u8a2d\u7f6e\u6578\u64da\u5eab\u9023\u63a5\n    SQLQuery.SQL.Text := 'SELECT \u5ba2\u6236ID, COUNT(\u8a02\u55aeID) AS \u7e3d\u8a02\u55ae\u6578, SUM(\u91d1\u984d) AS \u7e3d\u91d1\u984d FROM \u8a02\u55ae\u8868 GROUP BY \u5ba2\u6236ID';\n    SQLQuery.Open;\n\n    while not SQLQuery.Eof do\n    begin\n      \/\/ \u8655\u7406\u5408\u4f75\u5f8c\u7684\u6578\u64da\n      ShowMessage('\u5ba2\u6236ID: ' + SQLQuery.FieldByName('\u5ba2\u6236ID').AsString +\n                  ', \u7e3d\u8a02\u55ae\u6578: ' + SQLQuery.FieldByName('\u7e3d\u8a02\u55ae\u6578').AsString +\n                  ', \u7e3d\u91d1\u984d: ' + SQLQuery.FieldByName('\u7e3d\u91d1\u984d').AsString);\n      SQLQuery.Next;\n    end;\n  finally\n    SQLQuery.Free;\n  end;\nend;\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u5275\u5efa\u4e86\u4e00\u500b TSQLQuery \u5c0d\u8c61\uff0c\u4e26\u57f7\u884c\u4e86\u5408\u4f75\u884c\u7684 SQL \u67e5\u8a62\u3002\u7136\u5f8c\uff0c\u6211\u5011\u904d\u6b77\u7d50\u679c\u96c6\uff0c\u4e26\u986f\u793a\u6bcf\u4f4d\u5ba2\u6236\u7684\u5408\u4f75\u6578\u64da\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-sIUcpxWGgL\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li>\u78ba\u4fdd\u5728\u5408\u4f75\u884c\u6642\u8003\u616e\u5230\u6578\u64da\u7684\u5b8c\u6574\u6027\uff0c\u907f\u514d\u4e1f\u5931\u91cd\u8981\u4fe1\u606f\u3002<\/li>\n<li>\u4f7f\u7528\u9069\u7576\u7684\u805a\u5408\u51fd\u6578\u4f86\u78ba\u4fdd\u6578\u64da\u7684\u6e96\u78ba\u6027\u3002<\/li>\n<li>\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\uff0c\u6ce8\u610f\u6027\u80fd\u554f\u984c\uff0c\u53ef\u80fd\u9700\u8981\u512a\u5316\u67e5\u8a62\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-sIUcpxWGgL\">\u7d50\u8ad6<\/h2>\n<p>DelphiSQL \u63d0\u4f9b\u4e86\u4e00\u500b\u9748\u6d3b\u4e14\u5f37\u5927\u7684\u65b9\u5f0f\u4f86\u5be6\u73fe\u6578\u64da\u5eab\u8868\u7684\u884c\u5408\u4f75\u3002\u901a\u904e\u4f7f\u7528\u805a\u5408\u51fd\u6578\u548c GROUP BY \u5b50\u53e5\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u6574\u5408\u6578\u64da\uff0c\u5f9e\u800c\u63d0\u9ad8\u6578\u64da\u7684\u53ef\u8b80\u6027\u548c\u53ef\u7528\u6027\u3002\u7121\u8ad6\u662f\u5728\u6578\u64da\u5206\u6790\u9084\u662f\u5831\u544a\u751f\u6210\u4e2d\uff0c\u884c\u5408\u4f75\u90fd\u662f\u4e00\u500b\u4e0d\u53ef\u6216\u7f3a\u7684\u5de5\u5177\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u6578\u64da\u5eab\u7ba1\u7406\u6709\u9032\u4e00\u6b65\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>\u5b78\u7fd2\u5982\u4f55\u5728DelphiSQL\u4e2d\u5be6\u73fe\u6578\u64da\u5eab\u8868\u5408\u4f75\u884c\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\uff0c\u7c21\u5316\u67e5\u8a62\u7d50\u679c\u5c55\u793a\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-61133","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61133","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=61133"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61133\/revisions"}],"predecessor-version":[{"id":61134,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61133\/revisions\/61134"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=61133"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=61133"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=61133"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}