{"id":61159,"date":"2024-10-13T08:55:15","date_gmt":"2024-10-13T00:55:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/61159\/"},"modified":"2024-10-13T08:55:15","modified_gmt":"2024-10-13T00:55:15","slug":"delphi%e6%95%b8%e6%93%9a%e5%ba%ab%e6%8e%92%e5%ba%8f%e7%b0%a1%e5%96%ae%e6%98%93%e5%ad%b8%e7%9a%84%e6%96%b9%e6%b3%95-delphi-%e6%95%b8%e6%93%9a%e5%ba%ab%e6%8e%92%e5%ba%8f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/61159\/","title":{"rendered":"Delphi\u6578\u64da\u5eab\u6392\u5e8f:\u7c21\u55ae\u6613\u5b78\u7684\u65b9\u6cd5 (delphi \u6578\u64da\u5eab\u6392\u5e8f)"},"content":{"rendered":"

Delphi\u6578\u64da\u5eab\u6392\u5e8f:\u7c21\u55ae\u6613\u5b78\u7684\u65b9\u6cd5<\/h1>\n

\u5728\u958b\u767c\u61c9\u7528\u7a0b\u5e8f\u6642\uff0c\u6578\u64da\u5eab\u7684\u6392\u5e8f\u662f\u4e00\u500b\u5e38\u898b\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f\u986f\u793a\u7528\u6236\u5217\u8868\u3001\u7522\u54c1\u76ee\u9304\u9084\u662f\u4efb\u4f55\u5176\u4ed6\u6578\u64da\u96c6\uff0c\u6392\u5e8f\u90fd\u80fd\u5e6b\u52a9\u7528\u6236\u66f4\u8f15\u9b06\u5730\u627e\u5230\u6240\u9700\u7684\u4fe1\u606f\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u5728Delphi\u4e2d\u5c0d\u6578\u64da\u5eab\u9032\u884c\u6392\u5e8f\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u7c21\u55ae\u6613\u5b78\u7684\u65b9\u6cd5\u548c\u793a\u4f8b\u4ee3\u78bc\u3002<\/p>\n

\u70ba\u4ec0\u9ebc\u9700\u8981\u6392\u5e8f<\/h2>\n

\u6392\u5e8f\u4e0d\u50c5\u80fd\u63d0\u9ad8\u6578\u64da\u7684\u53ef\u8b80\u6027\uff0c\u9084\u80fd\u6539\u5584\u7528\u6236\u9ad4\u9a57\u3002\u901a\u904e\u5c0d\u6578\u64da\u9032\u884c\u6392\u5e8f\uff0c\u7528\u6236\u53ef\u4ee5\u66f4\u5feb\u5730\u627e\u5230\u6240\u9700\u7684\u4fe1\u606f\uff0c\u9019\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u5c24\u70ba\u91cd\u8981\u3002Delphi\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u5be6\u73fe\u6578\u64da\u5eab\u7684\u6392\u5e8f\uff0c\u7121\u8ad6\u662f\u4f7f\u7528SQL\u67e5\u8a62\u9084\u662f\u5728\u61c9\u7528\u7a0b\u5e8f\u4e2d\u9032\u884c\u6392\u5e8f\u3002<\/p>\n

\u4f7f\u7528SQL\u9032\u884c\u6392\u5e8f<\/h2>\n

\u5728Delphi\u4e2d\uff0c\u6700\u5e38\u898b\u7684\u6392\u5e8f\u65b9\u6cd5\u662f\u4f7f\u7528SQL\u8a9e\u53e5\u3002SQL\u7684ORDER BY\u5b50\u53e5\u53ef\u4ee5\u8f15\u9b06\u5730\u5c0d\u67e5\u8a62\u7d50\u679c\u9032\u884c\u6392\u5e8f\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff1a<\/p>\n

SELECT * FROM Customers ORDER BY LastName ASC;<\/code><\/pre>\n
\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u5f9eCustomers\u8868\u4e2d\u9078\u64c7\u6240\u6709\u8a18\u9304\uff0c\u4e26\u6839\u64daLastName\u5b57\u6bb5\u9032\u884c\u5347\u5e8f\u6392\u5e8f\u3002\u60a8\u53ef\u4ee5\u6839\u64da\u9700\u8981\u5c07ASC\u6539\u70baDESC\u4ee5\u5be6\u73fe\u964d\u5e8f\u6392\u5e8f\u3002<\/p>\n
Delphi\u4ee3\u78bc\u793a\u4f8b<\/h3>\n
\u4ee5\u4e0b\u662f\u5982\u4f55\u5728Delphi\u4e2d\u4f7f\u7528TADOQuery\u7d44\u4ef6\u4f86\u57f7\u884c\u4e0a\u8ff0SQL\u67e5\u8a62\u7684\u793a\u4f8b\uff1a<\/p>\n
var\n  ADOQuery: TADOQuery;\nbegin\n  ADOQuery := TADOQuery.Create(nil);\n  try\n    ADOQuery.Connection := YourConnection; \/\/ \u8a2d\u7f6e\u6578\u64da\u5eab\u9023\u63a5\n    ADOQuery.SQL.Text := 'SELECT * FROM Customers ORDER BY LastName ASC';\n    ADOQuery.Open;\n\n    \/\/ \u8655\u7406\u67e5\u8a62\u7d50\u679c\n    while not ADOQuery.Eof do\n    begin\n      \/\/ \u4f8b\u5982\uff0c\u986f\u793aLastName\n      ShowMessage(ADOQuery.FieldByName('LastName').AsString);\n      ADOQuery.Next;\n    end;\n  finally\n    ADOQuery.Free;\n  end;\nend;<\/code><\/pre>\n
\u5728\u61c9\u7528\u7a0b\u5e8f\u4e2d\u9032\u884c\u6392\u5e8f<\/h2>\n
\u9664\u4e86\u4f7f\u7528SQL\u9032\u884c\u6392\u5e8f\u5916\uff0c\u60a8\u9084\u53ef\u4ee5\u5728Delphi\u61c9\u7528\u7a0b\u5e8f\u4e2d\u5c0d\u6578\u64da\u9032\u884c\u6392\u5e8f\u3002\u9019\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\u53ef\u80fd\u66f4\u9748\u6d3b\uff0c\u7279\u5225\u662f\u7576\u6578\u64da\u5df2\u7d93\u52a0\u8f09\u5230\u5167\u5b58\u4e2d\u6642\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528TList\u9032\u884c\u6392\u5e8f\u7684\u793a\u4f8b\uff1a<\/p>\n
var\n  CustomerList: TList<TCustomer>;\nbegin\n  CustomerList := TList<TCustomer>.Create;\n  try\n    \/\/ \u5047\u8a2dCustomerList\u5df2\u7d93\u586b\u5145\u4e86\u6578\u64da\n    CustomerList.Sort(TComparer<TCustomer>.Construct(\n      function(const Left, Right: TCustomer): Integer\n      begin\n        Result := CompareText(Left.LastName, Right.LastName);\n      end));\n\n    \/\/ \u8655\u7406\u6392\u5e8f\u5f8c\u7684\u5217\u8868\n    for Customer in CustomerList do\n    begin\n      ShowMessage(Customer.LastName);\n    end;\n  finally\n    CustomerList.Free;\n  end;\nend;<\/code><\/pre>\n
\u7d50\u8ad6<\/h2>\n
\u5728Delphi\u4e2d\u5c0d\u6578\u64da\u5eab\u9032\u884c\u6392\u5e8f\u662f\u4e00\u500b\u7c21\u55ae\u800c\u6709\u6548\u7684\u904e\u7a0b\u3002\u7121\u8ad6\u662f\u4f7f\u7528SQL\u7684ORDER BY\u5b50\u53e5\u9084\u662f\u5728\u61c9\u7528\u7a0b\u5e8f\u4e2d\u9032\u884c\u6392\u5e8f\uff0c\u958b\u767c\u8005\u90fd\u53ef\u4ee5\u6839\u64da\u9700\u6c42\u9078\u64c7\u6700\u5408\u9069\u7684\u65b9\u6cd5\u3002\u638c\u63e1\u9019\u4e9b\u57fa\u672c\u6280\u5de7\u5f8c\uff0c\u60a8\u5c07\u80fd\u5920\u66f4\u597d\u5730\u7ba1\u7406\u548c\u5c55\u793a\u6578\u64da\uff0c\u63d0\u5347\u7528\u6236\u9ad4\u9a57\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684 \u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u670d\u52d9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22\u7c21\u55ae\u6613\u5b78\u7684Delphi\u6578\u64da\u5eab\u6392\u5e8f\u65b9\u6cd5\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\uff0c\u8b93\u60a8\u7684\u958b\u767c\u904e\u7a0b\u66f4\u52a0\u9806\u66a2\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-61159","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61159","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=61159"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61159\/revisions"}],"predecessor-version":[{"id":61160,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61159\/revisions\/61160"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=61159"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=61159"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=61159"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}