{"id":95138,"date":"2024-10-19T22:33:19","date_gmt":"2024-10-19T14:33:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/95138\/"},"modified":"2024-10-19T22:33:20","modified_gmt":"2024-10-19T14:33:20","slug":"oracle%e9%ab%98%e7%b4%9a%e6%95%b8%e6%93%9a%e5%ba%ab%e7%89%b9%e6%80%a7%e6%8f%ad%e7%a7%98%ef%bc%9a%e5%ad%98%e5%84%b2%e9%81%8e%e7%a8%8b%e3%80%81%e8%a7%b8%e7%99%bc%e5%99%a8%e8%88%87%e6%ac%8a%e9%99%90","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/95138\/","title":{"rendered":"Oracle\u9ad8\u7d1a\u6578\u64da\u5eab\u7279\u6027\u63ed\u79d8\uff1a\u5b58\u5132\u904e\u7a0b\u3001\u89f8\u767c\u5668\u8207\u6b0a\u9650\u7ba1\u7406"},"content":{"rendered":"<h1 id=\"oracle%e9%ab%98%e7%b4%9a%e6%95%b8%e6%93%9a%e5%ba%ab%e7%89%b9%e6%80%a7%e6%8f%ad%e7%a7%98%ef%bc%9a%e5%ad%98%e5%84%b2%e9%81%8e%e7%a8%8b%e3%80%81%e8%a7%b8%e7%99%bc%e5%99%a8%e8%88%87%e6%ac%8a%e9%99%90-SsQAbMeCno\">Oracle\u9ad8\u7d1a\u6578\u64da\u5eab\u7279\u6027\u63ed\u79d8\uff1a\u5b58\u5132\u904e\u7a0b\u3001\u89f8\u767c\u5668\u8207\u6b0a\u9650\u7ba1\u7406<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff08DBMS\uff09\u626e\u6f14\u8457\u81f3\u95dc\u91cd\u8981\u7684\u89d2\u8272\u3002Oracle\u4f5c\u70ba\u4e00\u500b\u9818\u5148\u7684\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u9ad8\u7d1a\u7279\u6027\u4f86\u652f\u6301\u4f01\u696d\u7684\u6578\u64da\u7ba1\u7406\u9700\u6c42\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eOracle\u7684\u5b58\u5132\u904e\u7a0b\u3001\u89f8\u767c\u5668\u8207\u6b0a\u9650\u7ba1\u7406\uff0c\u5e6b\u52a9\u8b80\u8005\u66f4\u597d\u5730\u7406\u89e3\u9019\u4e9b\u529f\u80fd\u7684\u61c9\u7528\u53ca\u5176\u91cd\u8981\u6027\u3002<\/p>\n<h2 id=\"%e5%ad%98%e5%84%b2%e9%81%8e%e7%a8%8b-SsQAbMeCno\">\u5b58\u5132\u904e\u7a0b<\/h2>\n<p>\u5b58\u5132\u904e\u7a0b\u662fOracle\u6578\u64da\u5eab\u4e2d\u7684\u4e00\u7a2e\u9810\u7de8\u8b6f\u7684SQL\u4ee3\u78bc\u96c6\u5408\uff0c\u9019\u4e9b\u4ee3\u78bc\u53ef\u4ee5\u5728\u6578\u64da\u5eab\u4e2d\u5b58\u5132\u4e26\u91cd\u8907\u4f7f\u7528\u3002\u5b58\u5132\u904e\u7a0b\u7684\u4e3b\u8981\u512a\u52e2\u5728\u65bc\u5b83\u5011\u80fd\u5920\u63d0\u9ad8\u6027\u80fd\u3001\u589e\u5f37\u5b89\u5168\u6027\u4ee5\u53ca\u4fc3\u9032\u4ee3\u78bc\u7684\u91cd\u7528\u3002<\/p>\n<h3 id=\"%e6%80%a7%e8%83%bd%e5%84%aa%e5%8b%a2-SsQAbMeCno\">\u6027\u80fd\u512a\u52e2<\/h3>\n<p>\u7531\u65bc\u5b58\u5132\u904e\u7a0b\u5728\u6578\u64da\u5eab\u4e2d\u9810\u7de8\u8b6f\uff0c\u9019\u610f\u5473\u8457\u5728\u57f7\u884c\u6642\u4e0d\u9700\u8981\u91cd\u65b0\u89e3\u6790\u548c\u7de8\u8b6fSQL\u8a9e\u53e5\uff0c\u5f9e\u800c\u986f\u8457\u63d0\u9ad8\u4e86\u57f7\u884c\u6548\u7387\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u5b58\u5132\u904e\u7a0b\u793a\u4f8b\uff1a<\/p>\n<pre><code>CREATE OR REPLACE PROCEDURE get_employee_salary (emp_id IN NUMBER, emp_salary OUT NUMBER) AS\nBEGIN\n    SELECT salary INTO emp_salary FROM employees WHERE employee_id = emp_id;\nEND;<\/code><\/pre>\n<p>\u9019\u500b\u5b58\u5132\u904e\u7a0b\u53ef\u4ee5\u5feb\u901f\u7372\u53d6\u7279\u5b9a\u54e1\u5de5\u7684\u85aa\u8cc7\uff0c\u4e26\u4e14\u53ef\u4ee5\u5728\u591a\u500b\u61c9\u7528\u7a0b\u5e8f\u4e2d\u91cd\u8907\u4f7f\u7528\u3002<\/p>\n<h3 id=\"%e5%ae%89%e5%85%a8%e6%80%a7%e5%a2%9e%e5%bc%b7-SsQAbMeCno\">\u5b89\u5168\u6027\u589e\u5f37<\/h3>\n<p>\u5b58\u5132\u904e\u7a0b\u9084\u53ef\u4ee5\u5e6b\u52a9\u589e\u5f37\u6578\u64da\u5eab\u7684\u5b89\u5168\u6027\u3002\u901a\u904e\u5c07\u696d\u52d9\u908f\u8f2f\u5c01\u88dd\u5728\u5b58\u5132\u904e\u7a0b\u4e2d\uff0c\u958b\u767c\u4eba\u54e1\u53ef\u4ee5\u9650\u5236\u7528\u6236\u5c0d\u5e95\u5c64\u6578\u64da\u8868\u7684\u76f4\u63a5\u8a2a\u554f\u3002\u4f8b\u5982\uff0c\u7528\u6236\u53ef\u4ee5\u88ab\u6388\u4e88\u57f7\u884c\u5b58\u5132\u904e\u7a0b\u7684\u6b0a\u9650\uff0c\u800c\u7121\u9700\u76f4\u63a5\u8a2a\u554f\u6578\u64da\u8868\u3002<\/p>\n<h2 id=\"%e8%a7%b8%e7%99%bc%e5%99%a8-SsQAbMeCno\">\u89f8\u767c\u5668<\/h2>\n<p>\u89f8\u767c\u5668\u662f\u81ea\u52d5\u57f7\u884c\u7684\u7a0b\u5e8f\uff0c\u7576\u7279\u5b9a\u4e8b\u4ef6\uff08\u5982\u63d2\u5165\u3001\u66f4\u65b0\u6216\u522a\u9664\u64cd\u4f5c\uff09\u767c\u751f\u6642\u81ea\u52d5\u89f8\u767c\u3002\u5b83\u5011\u5728\u6578\u64da\u5b8c\u6574\u6027\u548c\u696d\u52d9\u908f\u8f2f\u7684\u5be6\u65bd\u4e2d\u8d77\u8457\u91cd\u8981\u4f5c\u7528\u3002<\/p>\n<h3 id=\"%e6%95%b8%e6%93%9a%e5%ae%8c%e6%95%b4%e6%80%a7-SsQAbMeCno\">\u6578\u64da\u5b8c\u6574\u6027<\/h3>\n<p>\u89f8\u767c\u5668\u53ef\u4ee5\u7528\u4f86\u5f37\u5236\u57f7\u884c\u6578\u64da\u5b8c\u6574\u6027\u898f\u5247\u3002\u4f8b\u5982\uff0c\u7576\u4e00\u500b\u54e1\u5de5\u7684\u85aa\u8cc7\u88ab\u66f4\u65b0\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528\u89f8\u767c\u5668\u4f86\u78ba\u4fdd\u85aa\u8cc7\u4e0d\u4f4e\u65bc\u67d0\u500b\u6700\u4f4e\u6a19\u6e96\uff1a<\/p>\n<pre><code>CREATE OR REPLACE TRIGGER check_salary\nBEFORE UPDATE ON employees\nFOR EACH ROW\nBEGIN\n    IF :NEW.salary &lt; 30000 THEN\n        RAISE_APPLICATION_ERROR(-20001, &#039;\u85aa\u8cc7\u4e0d\u80fd\u4f4e\u65bc30000&#039;);\n    END IF;\nEND;<\/code><\/pre>\n<p>\u9019\u6a23\u7684\u89f8\u767c\u5668\u53ef\u4ee5\u6709\u6548\u9632\u6b62\u4e0d\u5408\u898f\u7684\u6578\u64da\u88ab\u5beb\u5165\u6578\u64da\u5eab\u3002<\/p>\n<h2 id=\"%e6%ac%8a%e9%99%90%e7%ae%a1%e7%90%86-SsQAbMeCno\">\u6b0a\u9650\u7ba1\u7406<\/h2>\n<p>\u5728Oracle\u6578\u64da\u5eab\u4e2d\uff0c\u6b0a\u9650\u7ba1\u7406\u662f\u78ba\u4fdd\u6578\u64da\u5b89\u5168\u548c\u5b8c\u6574\u6027\u7684\u95dc\u9375\u3002Oracle\u63d0\u4f9b\u4e86\u7d30\u7c92\u5ea6\u7684\u6b0a\u9650\u63a7\u5236\uff0c\u5141\u8a31\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u70ba\u4e0d\u540c\u7684\u7528\u6236\u548c\u89d2\u8272\u5206\u914d\u4e0d\u540c\u7684\u6b0a\u9650\u3002<\/p>\n<h3 id=\"%e6%ac%8a%e9%99%90%e9%a1%9e%e5%9e%8b-SsQAbMeCno\">\u6b0a\u9650\u985e\u578b<\/h3>\n<ul>\n<li><strong>\u7cfb\u7d71\u6b0a\u9650\uff1a<\/strong>\u5141\u8a31\u7528\u6236\u57f7\u884c\u7279\u5b9a\u7684\u6578\u64da\u5eab\u64cd\u4f5c\uff0c\u5982\u5275\u5efa\u8868\u3001\u522a\u9664\u8868\u7b49\u3002<\/li>\n<li><strong>\u5c0d\u8c61\u6b0a\u9650\uff1a<\/strong>\u5141\u8a31\u7528\u6236\u5c0d\u7279\u5b9a\u6578\u64da\u5eab\u5c0d\u8c61\uff08\u5982\u8868\u3001\u8996\u5716\uff09\u9032\u884c\u64cd\u4f5c\u3002<\/li>\n<li><strong>\u89d2\u8272\uff1a<\/strong>\u89d2\u8272\u662f\u4e00\u7d44\u6b0a\u9650\u7684\u96c6\u5408\uff0c\u53ef\u4ee5\u7c21\u5316\u6b0a\u9650\u7ba1\u7406\u3002<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u4ee5\u4e0bSQL\u8a9e\u53e5\u6388\u4e88\u7528\u6236\u5c0d\u67d0\u500b\u8868\u7684\u67e5\u8a62\u6b0a\u9650\uff1a<\/p>\n<pre><code>GRANT SELECT ON employees TO user1;<\/code><\/pre>\n<p>\u9019\u6a23\uff0cuser1\u5c31\u53ef\u4ee5\u67e5\u8a62employees\u8868\u4e2d\u7684\u6578\u64da\uff0c\u4f46\u7121\u6cd5\u9032\u884c\u5176\u4ed6\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-SsQAbMeCno\">\u7e3d\u7d50<\/h2>\n<p>Oracle\u6578\u64da\u5eab\u7684\u5b58\u5132\u904e\u7a0b\u3001\u89f8\u767c\u5668\u548c\u6b0a\u9650\u7ba1\u7406\u529f\u80fd\u70ba\u4f01\u696d\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u6578\u64da\u7ba1\u7406\u80fd\u529b\u3002\u9019\u4e9b\u9ad8\u7d1a\u7279\u6027\u4e0d\u50c5\u63d0\u9ad8\u4e86\u6027\u80fd\u548c\u5b89\u5168\u6027\uff0c\u9084\u4fc3\u9032\u4e86\u6578\u64da\u5b8c\u6574\u6027\u548c\u696d\u52d9\u908f\u8f2f\u7684\u5be6\u65bd\u3002\u5c0d\u65bc\u5e0c\u671b\u5728\u9999\u6e2f\u5c0b\u627e\u53ef\u9760\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\u7684\u4f01\u696d\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u6216 <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u4e86\u89e3\u9019\u4e9b\u7279\u6027\u5c07\u5e6b\u52a9\u4f01\u696d\u66f4\u597d\u5730\u5229\u7528Oracle\u6578\u64da\u5eab\uff0c\u5be6\u73fe\u5176\u696d\u52d9\u76ee\u6a19\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Oracle\u9ad8\u7d1a\u6578\u64da\u5eab\u7279\u6027\uff0c\u5305\u62ec\u5b58\u5132\u904e\u7a0b\u3001\u89f8\u767c\u5668\u548c\u6b0a\u9650\u7ba1\u7406\uff0c\u63d0\u5347\u6578\u64da\u5eab\u6027\u80fd\u8207\u5b89\u5168\u6027\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-95138","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95138","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=95138"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95138\/revisions"}],"predecessor-version":[{"id":95139,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95138\/revisions\/95139"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=95138"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=95138"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=95138"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}