{"id":94676,"date":"2024-10-19T20:14:17","date_gmt":"2024-10-19T12:14:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/94676\/"},"modified":"2024-10-19T20:14:18","modified_gmt":"2024-10-19T12:14:18","slug":"oraclepl%e7%b7%a8%e7%a8%8b%e8%aa%9e%e8%a8%80%e7%9a%84%e5%84%aa%e9%bb%9e%e4%bb%8b%e7%b4%b9","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/94676\/","title":{"rendered":"OraclePL\u7de8\u7a0b\u8a9e\u8a00\u7684\u512a\u9ede\u4ecb\u7d39"},"content":{"rendered":"

Oracle PL\/SQL \u7de8\u7a0b\u8a9e\u8a00\u7684\u512a\u9ede\u4ecb\u7d39<\/h1>\n

\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u7684\u9078\u64c7\u5c0d\u65bc\u4f01\u696d\u7684\u6210\u529f\u81f3\u95dc\u91cd\u8981\u3002Oracle PL\/SQL\uff08Procedural Language\/Structured Query Language\uff09\u4f5c\u70baOracle\u6578\u64da\u5eab\u7684\u4e00\u90e8\u5206\uff0c\u63d0\u4f9b\u4e86\u4e00\u7a2e\u5f37\u5927\u7684\u7de8\u7a0b\u8a9e\u8a00\uff0c\u80fd\u5920\u6709\u6548\u5730\u8655\u7406\u6578\u64da\u5eab\u64cd\u4f5c\u3002\u672c\u6587\u5c07\u63a2\u8a0eOracle PL\/SQL\u7684\u4e3b\u8981\u512a\u9ede\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u548c\u4f01\u696d\u7406\u89e3\u5176\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\u7684\u91cd\u8981\u6027\u3002<\/p>\n

1. \u6574\u5408\u6027\u8207\u64f4\u5c55\u6027<\/h2>\n

Oracle PL\/SQL\u7684\u6700\u5927\u512a\u52e2\u4e4b\u4e00\u662f\u5176\u8207Oracle\u6578\u64da\u5eab\u7684\u7dca\u5bc6\u6574\u5408\u3002\u9019\u7a2e\u6574\u5408\u6027\u4f7f\u5f97\u958b\u767c\u8005\u80fd\u5920\u76f4\u63a5\u5728\u6578\u64da\u5eab\u4e2d\u7de8\u5beb\u548c\u57f7\u884c\u4ee3\u78bc\uff0c\u5f9e\u800c\u63d0\u9ad8\u4e86\u6027\u80fd\u548c\u6548\u7387\u3002PL\/SQL\u652f\u6301\u8907\u96dc\u7684\u696d\u52d9\u908f\u8f2f\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5728\u6578\u64da\u5eab\u5c64\u9762\u9032\u884c\u6578\u64da\u8655\u7406\uff0c\u6e1b\u5c11\u4e86\u5ba2\u6236\u7aef\u548c\u670d\u52d9\u5668\u4e4b\u9593\u7684\u6578\u64da\u50b3\u8f38\u3002<\/p>\n

2. \u9ad8\u6548\u7684\u932f\u8aa4\u8655\u7406<\/h2>\n

PL\/SQL\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u932f\u8aa4\u8655\u7406\u6a5f\u5236\u3002\u958b\u767c\u8005\u53ef\u4ee5\u4f7f\u7528\u7570\u5e38\u8655\u7406\u4f86\u6355\u7372\u548c\u8655\u7406\u904b\u884c\u6642\u932f\u8aa4\uff0c\u9019\u6a23\u53ef\u4ee5\u63d0\u9ad8\u61c9\u7528\u7a0b\u5e8f\u7684\u7a69\u5b9a\u6027\u3002\u4f8b\u5982\uff1a<\/p>\n

BEGIN\n   -- \u5617\u8a66\u57f7\u884c\u67d0\u4e9b\u64cd\u4f5c\n   INSERT INTO employees (id, name) VALUES (1, 'John Doe');\nEXCEPTION\n   WHEN DUP_VAL_ON_INDEX THEN\n      DBMS_OUTPUT.PUT_LINE('\u932f\u8aa4\uff1a\u91cd\u8907\u7684\u503c');\nEND;<\/code><\/pre>\n
\u9019\u6bb5\u4ee3\u78bc\u5c55\u793a\u4e86\u5982\u4f55\u6355\u7372\u91cd\u8907\u503c\u7684\u932f\u8aa4\uff0c\u4e26\u9032\u884c\u76f8\u61c9\u7684\u8655\u7406\uff0c\u5f9e\u800c\u907f\u514d\u61c9\u7528\u7a0b\u5e8f\u5d29\u6f70\u3002<\/p>\n
3. \u652f\u6301\u6279\u91cf\u8655\u7406<\/h2>\n
PL\/SQL\u652f\u6301\u6279\u91cf\u8655\u7406\uff0c\u9019\u610f\u5473\u8457\u958b\u767c\u8005\u53ef\u4ee5\u4e00\u6b21\u6027\u8655\u7406\u591a\u689d\u8a18\u9304\uff0c\u5f9e\u800c\u986f\u8457\u63d0\u9ad8\u6027\u80fd\u3002\u4f7f\u7528FORALL\u8a9e\u53e5\u53ef\u4ee5\u6709\u6548\u5730\u57f7\u884c\u6279\u91cf\u63d2\u5165\u3001\u66f4\u65b0\u6216\u522a\u9664\u64cd\u4f5c\u3002\u4f8b\u5982\uff1a<\/p>\n
DECLARE\n   TYPE emp_rec IS RECORD (id NUMBER, name VARCHAR2(100));\n   TYPE emp_tab IS TABLE OF emp_rec;\n   employees emp_tab := emp_tab();\nBEGIN\n   employees.EXTEND(3);\n   employees(1) := emp_rec(1, 'Alice');\n   employees(2) := emp_rec(2, 'Bob');\n   employees(3) := emp_rec(3, 'Charlie');\n\n   FORALL i IN employees.FIRST .. employees.LAST\n      INSERT INTO employees (id, name) VALUES (employees(i).id, employees(i).name);\nEND;<\/code><\/pre>\n
\u9019\u6bb5\u4ee3\u78bc\u5c55\u793a\u4e86\u5982\u4f55\u4f7f\u7528FORALL\u8a9e\u53e5\u9032\u884c\u6279\u91cf\u63d2\u5165\uff0c\u5f9e\u800c\u63d0\u9ad8\u6578\u64da\u8655\u7406\u7684\u6548\u7387\u3002<\/p>\n
4. \u5b89\u5168\u6027<\/h2>\n
Oracle PL\/SQL\u63d0\u4f9b\u4e86\u591a\u5c64\u6b21\u7684\u5b89\u5168\u6027\u6a5f\u5236\u3002\u958b\u767c\u8005\u53ef\u4ee5\u4f7f\u7528\u5305\uff08Packages\uff09\u4f86\u5c01\u88dd\u6578\u64da\u548c\u908f\u8f2f\uff0c\u4e26\u63a7\u5236\u5c0d\u6578\u64da\u7684\u8a2a\u554f\u6b0a\u9650\u3002\u9019\u6a23\u53ef\u4ee5\u6709\u6548\u5730\u4fdd\u8b77\u654f\u611f\u6578\u64da\uff0c\u4e26\u78ba\u4fdd\u53ea\u6709\u6388\u6b0a\u7528\u6236\u624d\u80fd\u57f7\u884c\u7279\u5b9a\u64cd\u4f5c\u3002<\/p>\n
5. \u6613\u65bc\u7dad\u8b77\u548c\u91cd\u7528<\/h2>\n
PL\/SQL\u7684\u6a21\u7d44\u5316\u8a2d\u8a08\u4f7f\u5f97\u4ee3\u78bc\u7684\u7dad\u8b77\u548c\u91cd\u7528\u8b8a\u5f97\u66f4\u52a0\u7c21\u55ae\u3002\u958b\u767c\u8005\u53ef\u4ee5\u5c07\u5e38\u7528\u7684\u529f\u80fd\u5c01\u88dd\u5728\u5b58\u5132\u904e\u7a0b\u548c\u51fd\u6578\u4e2d\uff0c\u9019\u6a23\u5728\u9700\u8981\u6642\u53ef\u4ee5\u8f15\u9b06\u8abf\u7528\u3002\u4f8b\u5982\uff1a<\/p>\n
CREATE OR REPLACE FUNCTION get_employee_name(emp_id NUMBER) RETURN VARCHAR2 IS\n   emp_name VARCHAR2(100);\nBEGIN\n   SELECT name INTO emp_name FROM employees WHERE id = emp_id;\n   RETURN emp_name;\nEND;<\/code><\/pre>\n
\u9019\u6bb5\u4ee3\u78bc\u5b9a\u7fa9\u4e86\u4e00\u500b\u51fd\u6578\uff0c\u7528\u65bc\u6839\u64da\u54e1\u5de5ID\u7372\u53d6\u54e1\u5de5\u59d3\u540d\uff0c\u9019\u6a23\u53ef\u4ee5\u5728\u591a\u500b\u5730\u65b9\u91cd\u7528\uff0c\u6e1b\u5c11\u4ee3\u78bc\u5197\u9918\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
Oracle PL\/SQL\u4f5c\u70ba\u4e00\u7a2e\u5f37\u5927\u7684\u7de8\u7a0b\u8a9e\u8a00\uff0c\u5177\u5099\u6574\u5408\u6027\u3001\u932f\u8aa4\u8655\u7406\u3001\u9ad8\u6548\u7684\u6279\u91cf\u8655\u7406\u3001\u5b89\u5168\u6027\u4ee5\u53ca\u6613\u65bc\u7dad\u8b77\u548c\u91cd\u7528\u7b49\u591a\u9805\u512a\u9ede\u3002\u9019\u4e9b\u7279\u6027\u4f7f\u5f97PL\/SQL\u6210\u70ba\u4f01\u696d\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u5de5\u5177\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u548c\u5b89\u5168\u6027\u7684\u4f01\u696d\u4f86\u8aaa\uff0c\u9078\u64c7Oracle PL\/SQL\u7121\u7591\u662f\u4e00\u500b\u660e\u667a\u7684\u6c7a\u5b9a\u3002\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u5728\u60a8\u7684\u696d\u52d9\u4e2d\u5be6\u65bd\u9019\u4e9b\u6280\u8853\u6709\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4e86\u89e3\u66f4\u591a\u6709\u95dc\u9999\u6e2fVPS<\/a>\u548c\u96f2\u4f3a\u670d\u5668<\/a>\u7684\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22Oracle PL\u7de8\u7a0b\u8a9e\u8a00\u7684\u512a\u9ede\uff0c\u5305\u62ec\u9ad8\u6548\u6027\u80fd\u3001\u5f37\u5927\u6578\u64da\u8655\u7406\u80fd\u529b\u53ca\u6613\u65bc\u7dad\u8b77\u7684\u7279\u6027\uff0c\u52a9\u529b\u958b\u767c\u8005\u63d0\u5347\u5de5\u4f5c\u6548\u7387\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-94676","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/94676","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=94676"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/94676\/revisions"}],"predecessor-version":[{"id":94677,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/94676\/revisions\/94677"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=94676"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=94676"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=94676"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}