{"id":193531,"date":"2024-11-12T22:57:20","date_gmt":"2024-11-12T14:57:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/193531\/"},"modified":"2024-11-12T22:57:22","modified_gmt":"2024-11-12T14:57:22","slug":"%e5%ad%b8%e7%bf%92%e5%92%8c%e4%bd%bf%e7%94%a8oracle%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e4%bb%a3%e7%a2%bc%e6%8a%80%e5%b7%a7-oracle%e6%95%b8%e6%93%9a%e5%ba%ab%e4%bb%a3%e7%a2%bc","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/193531\/","title":{"rendered":"\u5b78\u7fd2\u548c\u4f7f\u7528Oracle\u6578\u64da\u5eab\u7684\u4ee3\u78bc\u6280\u5de7 (oracle\u6578\u64da\u5eab\u4ee3\u78bc)"},"content":{"rendered":"

\u5b78\u7fd2\u548c\u4f7f\u7528Oracle\u6578\u64da\u5eab\u7684\u4ee3\u78bc\u6280\u5de7<\/h1>\n

Oracle\u6578\u64da\u5eab\u662f\u4e00\u500b\u529f\u80fd\u5f37\u5927\u7684\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u4f01\u696d\u7d1a\u61c9\u7528\u4e2d\u3002\u7121\u8ad6\u662f\u6578\u64da\u5b58\u5132\u3001\u67e5\u8a62\u9084\u662f\u6578\u64da\u5206\u6790\uff0cOracle\u90fd\u63d0\u4f9b\u4e86\u8c50\u5bcc\u7684\u529f\u80fd\u548c\u9748\u6d3b\u7684\u7de8\u7a0b\u63a5\u53e3\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u4e00\u4e9b\u5b78\u7fd2\u548c\u4f7f\u7528Oracle\u6578\u64da\u5eab\u7684\u4ee3\u78bc\u6280\u5de7\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u6709\u6548\u5730\u5229\u7528\u9019\u4e00\u5e73\u53f0\u3002<\/p>\n

1. \u7406\u89e3SQL\u548cPL\/SQL<\/h2>\n

\u5728\u4f7f\u7528Oracle\u6578\u64da\u5eab\u6642\uff0c\u9996\u5148\u9700\u8981\u638c\u63e1SQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u548cPL\/SQL\uff08\u7a0b\u5e8f\u8a9e\u8a00\/\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u3002SQL\u7528\u65bc\u6578\u64da\u67e5\u8a62\u548c\u64cd\u4f5c\uff0c\u800cPL\/SQL\u5247\u662fOracle\u7684\u64f4\u5c55\u8a9e\u8a00\uff0c\u5141\u8a31\u958b\u767c\u8005\u7de8\u5beb\u8907\u96dc\u7684\u908f\u8f2f\u548c\u7a0b\u5e8f\u3002<\/p>\n

1.1 SQL\u57fa\u672c\u8a9e\u6cd5<\/h3>\n

\u4ee5\u4e0b\u662f\u4e00\u4e9b\u57fa\u672c\u7684SQL\u8a9e\u6cd5\u793a\u4f8b\uff1a<\/p>\n

-- \u5275\u5efa\u4e00\u500b\u8868\nCREATE TABLE employees (\n    employee_id NUMBER PRIMARY KEY,\n    first_name VARCHAR2(50),\n    last_name VARCHAR2(50),\n    hire_date DATE\n);\n\n-- \u63d2\u5165\u6578\u64da\nINSERT INTO employees (employee_id, first_name, last_name, hire_date)\nVALUES (1, 'John', 'Doe', TO_DATE('2023-01-01', 'YYYY-MM-DD'));\n\n-- \u67e5\u8a62\u6578\u64da\nSELECT * FROM employees WHERE hire_date > TO_DATE('2022-01-01', 'YYYY-MM-DD');\n<\/code><\/pre>\n
1.2 PL\/SQL\u57fa\u672c\u8a9e\u6cd5<\/h3>\n
PL\/SQL\u5141\u8a31\u958b\u767c\u8005\u7de8\u5beb\u7a0b\u5e8f\u584a\uff0c\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684PL\/SQL\u793a\u4f8b\uff1a<\/p>\n
DECLARE\n    v_employee_id NUMBER;\nBEGIN\n    SELECT employee_id INTO v_employee_id FROM employees WHERE first_name = 'John';\n    DBMS_OUTPUT.PUT_LINE('Employee ID: ' || v_employee_id);\nEND;\n<\/code><\/pre>\n
2. \u4f7f\u7528\u7d22\u5f15\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd<\/h2>\n
\u5728Oracle\u6578\u64da\u5eab\u4e2d\uff0c\u7d22\u5f15\u662f\u4e00\u7a2e\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u7684\u6709\u6548\u5de5\u5177\u3002\u901a\u904e\u70ba\u8868\u4e2d\u7684\u5217\u5275\u5efa\u7d22\u5f15\uff0c\u53ef\u4ee5\u986f\u8457\u6e1b\u5c11\u67e5\u8a62\u6240\u9700\u7684\u6642\u9593\u3002<\/p>\n
-- \u5275\u5efa\u7d22\u5f15\nCREATE INDEX idx_last_name ON employees (last_name);\n<\/code><\/pre>\n
\u4f7f\u7528\u7d22\u5f15\u6642\uff0c\u61c9\u6ce8\u610f\u9078\u64c7\u5408\u9069\u7684\u5217\u9032\u884c\u7d22\u5f15\uff0c\u907f\u514d\u904e\u591a\u7684\u7d22\u5f15\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u3002<\/p>\n
3. \u4e8b\u52d9\u7ba1\u7406<\/h2>\n
\u5728Oracle\u4e2d\uff0c\u4e8b\u52d9\u7ba1\u7406\u662f\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u7684\u91cd\u8981\u90e8\u5206\u3002\u4f7f\u7528COMMIT\u548cROLLBACK\u8a9e\u53e5\u53ef\u4ee5\u63a7\u5236\u4e8b\u52d9\u7684\u63d0\u4ea4\u548c\u56de\u6efe\u3002<\/p>\n
BEGIN\n    INSERT INTO employees (employee_id, first_name, last_name, hire_date)\n    VALUES (2, 'Jane', 'Smith', TO_DATE('2023-02-01', 'YYYY-MM-DD'));\n    \n    -- \u63d0\u4ea4\u4e8b\u52d9\n    COMMIT;\nEXCEPTION\n    WHEN OTHERS THEN\n        -- \u56de\u6efe\u4e8b\u52d9\n        ROLLBACK;\nEND;\n<\/code><\/pre>\n
4. \u512a\u5316\u67e5\u8a62<\/h2>\n
\u512a\u5316\u67e5\u8a62\u662f\u63d0\u9ad8\u6578\u64da\u5eab\u6027\u80fd\u7684\u95dc\u9375\u3002\u4f7f\u7528EXPLAIN PLAN\u53ef\u4ee5\u5206\u6790\u67e5\u8a62\u7684\u57f7\u884c\u8a08\u5283\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u627e\u51fa\u6027\u80fd\u74f6\u9838\u3002<\/p>\n
EXPLAIN PLAN FOR\nSELECT * FROM employees WHERE last_name = 'Doe';\n<\/code><\/pre>\n
5. \u4f7f\u7528\u8996\u5716\u548c\u5b58\u5132\u904e\u7a0b<\/h2>\n
\u8996\u5716\u548c\u5b58\u5132\u904e\u7a0b\u662fOracle\u6578\u64da\u5eab\u4e2d\u975e\u5e38\u6709\u7528\u7684\u529f\u80fd\u3002\u8996\u5716\u53ef\u4ee5\u7c21\u5316\u8907\u96dc\u67e5\u8a62\uff0c\u800c\u5b58\u5132\u904e\u7a0b\u5247\u53ef\u4ee5\u5c01\u88dd\u696d\u52d9\u908f\u8f2f\uff0c\u63d0\u5347\u4ee3\u78bc\u7684\u91cd\u7528\u6027\u3002<\/p>\n
-- \u5275\u5efa\u8996\u5716\nCREATE VIEW employee_view AS\nSELECT first_name, last_name FROM employees;\n\n-- \u5275\u5efa\u5b58\u5132\u904e\u7a0b\nCREATE OR REPLACE PROCEDURE get_employee_name (p_id IN NUMBER) IS\n    v_name VARCHAR2(100);\nBEGIN\n    SELECT first_name || ' ' || last_name INTO v_name FROM employees WHERE employee_id = p_id;\n    DBMS_OUTPUT.PUT_LINE('Employee Name: ' || v_name);\nEND;\n<\/code><\/pre>\n
\u7e3d\u7d50<\/h2>\n
\u5b78\u7fd2\u548c\u4f7f\u7528Oracle\u6578\u64da\u5eab\u7684\u4ee3\u78bc\u6280\u5de7\u4e0d\u50c5\u80fd\u63d0\u9ad8\u958b\u767c\u6548\u7387\uff0c\u9084\u80fd\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u597d\u5730\u7ba1\u7406\u548c\u512a\u5316\u6578\u64da\u5eab\u6027\u80fd\u3002\u638c\u63e1SQL\u548cPL\/SQL\u7684\u57fa\u672c\u8a9e\u6cd5\u3001\u4f7f\u7528\u7d22\u5f15\u3001\u4e8b\u52d9\u7ba1\u7406\u3001\u67e5\u8a62\u512a\u5316\u4ee5\u53ca\u8996\u5716\u548c\u5b58\u5132\u904e\u7a0b\u7684\u61c9\u7528\uff0c\u90fd\u662f\u6210\u70baOracle\u6578\u64da\u5eab\u5c08\u5bb6\u7684\u91cd\u8981\u6b65\u9a5f\u3002\u5982\u679c\u60a8\u9700\u8981\u7a69\u5b9a\u7684\u6578\u64da\u5eab\u74b0\u5883\uff0c\u8003\u616e\u4f7f\u7528\u9999\u6e2fVPS<\/a>\u6216\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u4f86\u652f\u6301\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\u3002\u9019\u4e9b\u89e3\u6c7a\u65b9\u6848\u80fd\u5920\u63d0\u4f9b\u9ad8\u6548\u7684\u6027\u80fd\u548c\u53ef\u9760\u7684\u6578\u64da\u7ba1\u7406\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u638c\u63e1Oracle\u6578\u64da\u5eab\u7684\u4ee3\u78bc\u6280\u5de7\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\uff0c\u5b78\u7fd2\u6700\u4f73\u5be6\u8e10\uff0c\u512a\u5316\u67e5\u8a62\u548c\u6578\u64da\u64cd\u4f5c\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-193531","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/193531","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=193531"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/193531\/revisions"}],"predecessor-version":[{"id":193532,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/193531\/revisions\/193532"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=193531"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=193531"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=193531"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}