{"id":95048,"date":"2024-10-19T21:48:17","date_gmt":"2024-10-19T13:48:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/95048\/"},"modified":"2024-10-19T21:48:18","modified_gmt":"2024-10-19T13:48:18","slug":"oracle%e5%ad%98%e5%84%b2%e9%81%8e%e7%a8%8b%e4%b8%ad%e5%8e%bb%e6%8e%89%e9%87%8d%e8%a4%87%e5%ad%97%e7%ac%a6%e4%b8%b2%e5%87%bd%e6%95%b8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/95048\/","title":{"rendered":"Oracle\u5b58\u5132\u904e\u7a0b\u4e2d\u53bb\u6389\u91cd\u8907\u5b57\u7b26\u4e32\u51fd\u6578"},"content":{"rendered":"

Oracle\u5b58\u5132\u904e\u7a0b\u4e2d\u53bb\u6389\u91cd\u8907\u5b57\u7b26\u4e32\u51fd\u6578<\/h1>\n

\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u91cd\u8907\u5b57\u7b26\u4e32\u7684\u8655\u7406\u662f\u4e00\u500b\u5e38\u898b\u7684\u9700\u6c42\u3002\u7279\u5225\u662f\u5728\u4f7f\u7528Oracle\u6578\u64da\u5eab\u6642\uff0c\u958b\u767c\u8005\u7d93\u5e38\u9700\u8981\u5728\u5b58\u5132\u904e\u7a0b\u4e2d\u53bb\u9664\u91cd\u8907\u7684\u5b57\u7b26\u4e32\uff0c\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u552f\u4e00\u6027\u548c\u6574\u6f54\u6027\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728Oracle\u5b58\u5132\u904e\u7a0b\u4e2d\u5be6\u73fe\u53bb\u6389\u91cd\u8907\u5b57\u7b26\u4e32\u7684\u529f\u80fd\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u3002<\/p>\n

\u91cd\u8907\u5b57\u7b26\u4e32\u7684\u554f\u984c<\/h2>\n

\u5728\u6578\u64da\u5eab\u4e2d\uff0c\u91cd\u8907\u5b57\u7b26\u4e32\u53ef\u80fd\u6703\u5c0e\u81f4\u6578\u64da\u5197\u9918\uff0c\u5f71\u97ff\u67e5\u8a62\u6548\u7387\uff0c\u751a\u81f3\u53ef\u80fd\u5c0e\u81f4\u6578\u64da\u4e0d\u4e00\u81f4\u6027\u3002\u56e0\u6b64\uff0c\u958b\u767c\u8005\u9700\u8981\u5728\u6578\u64da\u63d2\u5165\u6216\u66f4\u65b0\u6642\uff0c\u6aa2\u67e5\u4e26\u53bb\u9664\u91cd\u8907\u7684\u5b57\u7b26\u4e32\u3002\u9019\u5728\u8655\u7406\u7528\u6236\u8f38\u5165\u3001\u6578\u64da\u5c0e\u5165\u6216\u6578\u64da\u6e05\u7406\u6642\u5c24\u70ba\u91cd\u8981\u3002<\/p>\n

\u4f7f\u7528Oracle\u7684\u96c6\u5408\u985e\u578b<\/h2>\n

Oracle\u63d0\u4f9b\u4e86\u96c6\u5408\u985e\u578b\uff08\u5982VARRAY\u548c\u5d4c\u5957\u8868\uff09\u4f86\u8655\u7406\u91cd\u8907\u5b57\u7b26\u4e32\u7684\u554f\u984c\u3002\u901a\u904e\u4f7f\u7528\u96c6\u5408\u985e\u578b\uff0c\u6211\u5011\u53ef\u4ee5\u8f15\u9b06\u5730\u53bb\u9664\u91cd\u8907\u7684\u5b57\u7b26\u4e32\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528\u5d4c\u5957\u8868\u4f86\u53bb\u9664\u91cd\u8907\u5b57\u7b26\u4e32\u7684\u793a\u4f8b\uff1a<\/p>\n

CREATE OR REPLACE TYPE string_table AS TABLE OF VARCHAR2(100);\n<\/code><\/pre>\n
\u9996\u5148\uff0c\u6211\u5011\u9700\u8981\u5275\u5efa\u4e00\u500b\u81ea\u5b9a\u7fa9\u7684\u96c6\u5408\u985e\u578b\uff0c\u7136\u5f8c\u5728\u5b58\u5132\u904e\u7a0b\u4e2d\u4f7f\u7528\u5b83\u3002<\/p>\n
\u5b58\u5132\u904e\u7a0b\u793a\u4f8b<\/h2>\n
\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\u5b58\u5132\u904e\u7a0b\uff0c\u8a72\u904e\u7a0b\u63a5\u53d7\u4e00\u500b\u5b57\u7b26\u4e32\u5217\u8868\uff0c\u4e26\u8fd4\u56de\u53bb\u9664\u91cd\u8907\u5b57\u7b26\u4e32\u7684\u7d50\u679c\uff1a<\/p>\n
CREATE OR REPLACE PROCEDURE remove_duplicates(p_input IN string_table, p_output OUT string_table) AS\n    v_temp string_table := string_table();\nBEGIN\n    FOR i IN 1 .. p_input.COUNT LOOP\n        IF v_temp.EXISTS(p_input(i)) THEN\n            CONTINUE;\n        ELSE\n            v_temp.EXTEND;\n            v_temp(v_temp.COUNT) := p_input(i);\n        END IF;\n    END LOOP;\n    p_output := v_temp;\nEND remove_duplicates;\n<\/code><\/pre>\n
\u5728\u9019\u500b\u5b58\u5132\u904e\u7a0b\u4e2d\uff0c\u6211\u5011\u4f7f\u7528\u4e86\u4e00\u500b\u5faa\u74b0\u4f86\u904d\u6b77\u8f38\u5165\u7684\u5b57\u7b26\u4e32\u5217\u8868\uff0c\u4e26\u6aa2\u67e5\u6bcf\u500b\u5b57\u7b26\u4e32\u662f\u5426\u5df2\u7d93\u5b58\u5728\u65bc\u81e8\u6642\u96c6\u5408\u4e2d\u3002\u5982\u679c\u4e0d\u5b58\u5728\uff0c\u5247\u5c07\u5176\u6dfb\u52a0\u5230\u81e8\u6642\u96c6\u5408\u4e2d\u3002\u6700\u7d42\uff0c\u53bb\u9664\u91cd\u8907\u7684\u5b57\u7b26\u4e32\u5c07\u88ab\u8fd4\u56de\u3002<\/p>\n
\u8abf\u7528\u5b58\u5132\u904e\u7a0b<\/h2>\n
\u8981\u8abf\u7528\u9019\u500b\u5b58\u5132\u904e\u7a0b\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u78bc\uff1a<\/p>\n
DECLARE\n    v_input string_table := string_table('apple', 'banana', 'apple', 'orange', 'banana');\n    v_output string_table;\nBEGIN\n    remove_duplicates(v_input, v_output);\n    FOR i IN 1 .. v_output.COUNT LOOP\n        DBMS_OUTPUT.PUT_LINE(v_output(i));\n    END LOOP;\nEND;\n<\/code><\/pre>\n
\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u5275\u5efa\u4e86\u4e00\u500b\u5305\u542b\u91cd\u8907\u5b57\u7b26\u4e32\u7684\u8f38\u5165\u96c6\u5408\uff0c\u7136\u5f8c\u8abf\u7528`remove_duplicates`\u5b58\u5132\u904e\u7a0b\uff0c\u4e26\u5c07\u7d50\u679c\u8f38\u51fa\u5230\u63a7\u5236\u53f0\u3002\u9019\u6a23\uff0c\u6211\u5011\u5c31\u80fd\u5920\u770b\u5230\u53bb\u9664\u91cd\u8907\u5b57\u7b26\u4e32\u5f8c\u7684\u7d50\u679c\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u5728Oracle\u6578\u64da\u5eab\u4e2d\uff0c\u53bb\u9664\u91cd\u8907\u5b57\u7b26\u4e32\u662f\u4e00\u500b\u91cd\u8981\u7684\u64cd\u4f5c\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u3002\u901a\u904e\u4f7f\u7528\u96c6\u5408\u985e\u578b\u548c\u5b58\u5132\u904e\u7a0b\uff0c\u6211\u5011\u53ef\u4ee5\u6709\u6548\u5730\u5be6\u73fe\u9019\u4e00\u529f\u80fd\u3002\u9019\u4e0d\u50c5\u63d0\u9ad8\u4e86\u6578\u64da\u7684\u6574\u6f54\u6027\uff0c\u9084\u80fd\u63d0\u5347\u67e5\u8a62\u6548\u7387\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u6578\u64da\u7ba1\u7406\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528\u9999\u6e2fVPS<\/a>\u4f86\u90e8\u7f72\u60a8\u7684Oracle\u6578\u64da\u5eab\u3002Server.HK\u63d0\u4f9b\u7a69\u5b9a\u7684\u670d\u52d9\u5668\u74b0\u5883\uff0c\u5e6b\u52a9\u60a8\u66f4\u597d\u5730\u7ba1\u7406\u6578\u64da\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22Oracle\u5b58\u5132\u904e\u7a0b\u4e2d\u53bb\u6389\u91cd\u8907\u5b57\u7b26\u4e32\u7684\u51fd\u6578\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\uff0c\u7c21\u5316\u5b57\u7b26\u4e32\u7ba1\u7406\uff0c\u512a\u5316\u6578\u64da\u5eab\u6027\u80fd\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-95048","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95048","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=95048"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95048\/revisions"}],"predecessor-version":[{"id":95049,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95048\/revisions\/95049"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=95048"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=95048"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=95048"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}