{"id":179326,"date":"2024-11-09T00:53:20","date_gmt":"2024-11-08T16:53:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/179326\/"},"modified":"2024-11-09T00:53:21","modified_gmt":"2024-11-08T16:53:21","slug":"%e5%a6%82%e4%bd%95%e7%94%a8-sas-%e5%ae%8f%e5%af%a6%e7%8f%be-oracle-%e4%b8%ad%e7%9a%84-decode-%e5%87%bd%e6%95%b8%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/179326\/","title":{"rendered":"\u5982\u4f55\u7528 SAS \u5b8f\u5be6\u73fe Oracle \u4e2d\u7684 decode \u51fd\u6578\uff1f"},"content":{"rendered":"

\u5982\u4f55\u7528 SAS \u5b8f\u5be6\u73fe Oracle \u4e2d\u7684 decode \u51fd\u6578\uff1f<\/h1>\n

\u5728\u6578\u64da\u8655\u7406\u548c\u5206\u6790\u7684\u904e\u7a0b\u4e2d\uff0c\u7d93\u5e38\u9700\u8981\u6839\u64da\u7279\u5b9a\u689d\u4ef6\u4f86\u8f49\u63db\u6578\u64da\u3002Oracle \u6578\u64da\u5eab\u4e2d\u7684 DECODE<\/code> \u51fd\u6578\u662f\u4e00\u500b\u975e\u5e38\u6709\u7528\u7684\u5de5\u5177\uff0c\u5b83\u53ef\u4ee5\u6839\u64da\u7d66\u5b9a\u7684\u689d\u4ef6\u8fd4\u56de\u4e0d\u540c\u7684\u503c\u3002\u5c0d\u65bc\u4f7f\u7528 SAS \u9032\u884c\u6578\u64da\u5206\u6790\u7684\u7528\u6236\u4f86\u8aaa\uff0c\u4e86\u89e3\u5982\u4f55\u5728 SAS \u4e2d\u5be6\u73fe\u985e\u4f3c\u7684\u529f\u80fd\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528 SAS \u5b8f\u4f86\u6a21\u64ec Oracle \u7684 DECODE<\/code> \u51fd\u6578\u3002<\/p>\n

Oracle \u7684 DECODE \u51fd\u6578\u6982\u8ff0<\/h2>\n

DECODE<\/code> \u51fd\u6578\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n

DECODE(expression, search, result, ..., default)<\/code><\/pre>\n
\u9019\u500b\u51fd\u6578\u6703\u6aa2\u67e5 expression<\/code> \u7684\u503c\uff0c\u4e26\u8207 search<\/code> \u7684\u503c\u9032\u884c\u6bd4\u8f03\u3002\u5982\u679c\u5339\u914d\uff0c\u5247\u8fd4\u56de\u5c0d\u61c9\u7684 result<\/code>\uff1b\u5982\u679c\u6c92\u6709\u5339\u914d\uff0c\u5247\u8fd4\u56de default<\/code> \u503c\u3002\u9019\u4f7f\u5f97 DECODE<\/code> \u51fd\u6578\u5728\u8655\u7406\u591a\u689d\u4ef6\u908f\u8f2f\u6642\u975e\u5e38\u65b9\u4fbf\u3002<\/p>\n
SAS \u5b8f\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n
SAS \u5b8f\u662f\u4e00\u7a2e\u5f37\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u7528\u4f86\u81ea\u52d5\u5316\u548c\u7c21\u5316\u91cd\u8907\u7684\u4efb\u52d9\u3002\u901a\u904e\u4f7f\u7528\u5b8f\uff0c\u60a8\u53ef\u4ee5\u5c07\u4ee3\u78bc\u5c01\u88dd\u5728\u4e00\u500b\u53ef\u91cd\u7528\u7684\u6a21\u584a\u4e2d\uff0c\u5f9e\u800c\u63d0\u9ad8\u6548\u7387\u3002SAS \u5b8f\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n
%MACRO macro_name(parameters);\n    \/* SAS code *\/\n%MEND macro_name;<\/code><\/pre>\n
\u5728 SAS \u4e2d\u5be6\u73fe DECODE \u51fd\u6578<\/h2>\n
\u70ba\u4e86\u5728 SAS \u4e2d\u6a21\u64ec Oracle \u7684 DECODE<\/code> \u51fd\u6578\uff0c\u6211\u5011\u53ef\u4ee5\u5275\u5efa\u4e00\u500b\u5b8f\uff0c\u8a72\u5b8f\u63a5\u53d7\u4e00\u500b\u8868\u9054\u5f0f\u548c\u4e00\u7cfb\u5217\u7684\u689d\u4ef6\u53ca\u5176\u5c0d\u61c9\u7684\u7d50\u679c\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff1a<\/p>\n
%MACRO DECODE(expr, value1, result1, value2, result2, default);\n    %IF &expr = &value1 %THEN %DO;\n        &result1\n    %END;\n    %ELSE %IF &expr = &value2 %THEN %DO;\n        &result2\n    %END;\n    %ELSE %DO;\n        &default\n    %END;\n%MEND DECODE;<\/code><\/pre>\n
\u5728\u9019\u500b\u5b8f\u4e2d\uff0c\u6211\u5011\u5b9a\u7fa9\u4e86\u4e09\u500b\u53c3\u6578\uff1aexpr<\/code> \u662f\u8981\u6aa2\u67e5\u7684\u8868\u9054\u5f0f\uff0cvalue1<\/code> \u548c value2<\/code> \u662f\u8981\u6bd4\u8f03\u7684\u503c\uff0c\u800c result1<\/code> \u548c result2<\/code> \u662f\u5c0d\u61c9\u7684\u7d50\u679c\u3002\u5982\u679c\u6c92\u6709\u5339\u914d\uff0c\u5247\u8fd4\u56de default<\/code> \u503c\u3002<\/p>\n
\u4f7f\u7528\u793a\u4f8b<\/h3>\n
\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u8b8a\u91cf status<\/code>\uff0c\u6211\u5011\u5e0c\u671b\u6839\u64da\u5176\u503c\u8fd4\u56de\u4e0d\u540c\u7684\u63cf\u8ff0\u3002\u53ef\u4ee5\u9019\u6a23\u4f7f\u7528\u6211\u5011\u7684 DECODE<\/code> \u5b8f\uff1a<\/p>\n
data example;\n    input status $;\n    description = %DECODE(status, 'A', 'Active', 'I', 'Inactive', 'Unknown');\n    datalines;\nA\nI\nX\n;\nrun;<\/code><\/pre>\n
\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u7576 status<\/code> \u70ba ‘A’ \u6642\uff0cdescription<\/code> \u5c07\u8fd4\u56de ‘Active’\uff1b\u7576 status<\/code> \u70ba ‘I’ \u6642\uff0c\u5c07\u8fd4\u56de ‘Inactive’\uff1b\u5982\u679c status<\/code> \u662f\u5176\u4ed6\u503c\uff0c\u5247\u8fd4\u56de ‘Unknown’\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u901a\u904e\u4f7f\u7528 SAS \u5b8f\uff0c\u6211\u5011\u53ef\u4ee5\u6709\u6548\u5730\u6a21\u64ec Oracle \u7684 DECODE<\/code> \u51fd\u6578\uff0c\u5f9e\u800c\u5728\u6578\u64da\u8655\u7406\u904e\u7a0b\u4e2d\u63d0\u9ad8\u9748\u6d3b\u6027\u548c\u6548\u7387\u3002\u9019\u7a2e\u65b9\u6cd5\u4e0d\u50c5\u7c21\u5316\u4e86\u4ee3\u78bc\uff0c\u9084\u4f7f\u5f97\u689d\u4ef6\u908f\u8f2f\u7684\u5be6\u73fe\u8b8a\u5f97\u66f4\u52a0\u76f4\u89c0\u3002\u5c0d\u65bc\u9700\u8981\u5728 SAS \u4e2d\u9032\u884c\u8907\u96dc\u6578\u64da\u8655\u7406\u7684\u7528\u6236\u4f86\u8aaa\uff0c\u638c\u63e1\u9019\u7a2e\u6280\u8853\u662f\u975e\u5e38\u6709\u5e6b\u52a9\u7684\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 \u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u7528\u6236\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f\u6578\u64da\u5206\u6790\u9084\u662f\u61c9\u7528\u90e8\u7f72\uff0c\u6211\u5011\u7684 \u96f2\u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5b78\u7fd2\u5982\u4f55\u5728 SAS \u5b8f\u4e2d\u5be6\u73fe Oracle \u7684 decode \u51fd\u6578\uff0c\u7c21\u5316\u6578\u64da\u8655\u7406\u548c\u689d\u4ef6\u908f\u8f2f\u7684\u61c9\u7528\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-179326","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179326","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=179326"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179326\/revisions"}],"predecessor-version":[{"id":179327,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179326\/revisions\/179327"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=179326"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=179326"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=179326"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}