{"id":95794,"date":"2024-10-20T04:03:17","date_gmt":"2024-10-19T20:03:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/95794\/"},"modified":"2024-10-20T04:03:17","modified_gmt":"2024-10-19T20:03:17","slug":"oracle%e6%95%b8%e6%93%9a%e5%ba%ab%e5%a6%82%e4%bd%95%e6%ad%a3%e7%a2%ba%e7%94%a8pl-sql%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/95794\/","title":{"rendered":"Oracle\u6578\u64da\u5eab\u5982\u4f55\u6b63\u78ba\u7528PL\/SQL\uff1f"},"content":{"rendered":"<h1 id=\"oracle%e6%95%b8%e6%93%9a%e5%ba%ab%e5%a6%82%e4%bd%95%e6%ad%a3%e7%a2%ba%e7%94%a8pl-sql%ef%bc%9f-mYhVWKARcL\">Oracle\u6578\u64da\u5eab\u5982\u4f55\u6b63\u78ba\u7528PL\/SQL\uff1f<\/h1>\n<p>PL\/SQL\uff08Procedural Language\/SQL\uff09\u662fOracle\u6578\u64da\u5eab\u7684\u4e00\u7a2e\u7a0b\u5e8f\u8a2d\u8a08\u8a9e\u8a00\uff0c\u7d50\u5408\u4e86SQL\u7684\u5f37\u5927\u67e5\u8a62\u80fd\u529b\u548cPL\/SQL\u7684\u7a0b\u5e8f\u63a7\u5236\u529f\u80fd\u3002\u9019\u4f7f\u5f97\u958b\u767c\u8005\u80fd\u5920\u7de8\u5beb\u8907\u96dc\u7684\u6578\u64da\u8655\u7406\u908f\u8f2f\uff0c\u4e26\u63d0\u9ad8\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u6548\u7387\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u6b63\u78ba\u4f7f\u7528PL\/SQL\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u7bc4\u4f8b\u548c\u6700\u4f73\u5be6\u8e10\u3002<\/p>\n<h2 id=\"pl-sql%e7%9a%84%e5%9f%ba%e6%9c%ac%e7%b5%90%e6%a7%8b-mYhVWKARcL\">PL\/SQL\u7684\u57fa\u672c\u7d50\u69cb<\/h2>\n<p>PL\/SQL\u7684\u57fa\u672c\u7d50\u69cb\u7531\u4ee5\u4e0b\u5e7e\u500b\u90e8\u5206\u7d44\u6210\uff1a<\/p>\n<ul>\n<li><strong>\u5ba3\u544a\u90e8\u5206\uff1a<\/strong>\u5728\u9019\u4e00\u90e8\u5206\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5ba3\u544a\u8b8a\u6578\u3001\u5e38\u6578\u3001\u6e38\u6a19\u7b49\u3002<\/li>\n<li><strong>\u57f7\u884c\u90e8\u5206\uff1a<\/strong>\u9019\u662fPL\/SQL\u7a0b\u5f0f\u7684\u4e3b\u8981\u908f\u8f2f\uff0c\u5305\u542bSQL\u8a9e\u53e5\u548cPL\/SQL\u8a9e\u53e5\u3002<\/li>\n<li><strong>\u7570\u5e38\u8655\u7406\u90e8\u5206\uff1a<\/strong>\u7528\u65bc\u6355\u6349\u548c\u8655\u7406\u57f7\u884c\u904e\u7a0b\u4e2d\u53ef\u80fd\u51fa\u73fe\u7684\u932f\u8aa4\u3002<\/li>\n<\/ul>\n<h3 id=\"%e7%af%84%e4%be%8b%ef%bc%9a%e5%9f%ba%e6%9c%ac%e7%9a%84pl-sql%e7%a8%8b%e5%bc%8f-mYhVWKARcL\">\u7bc4\u4f8b\uff1a\u57fa\u672c\u7684PL\/SQL\u7a0b\u5f0f<\/h3>\n<pre><code>\nDECLARE\n    v_employee_name VARCHAR2(100);\nBEGIN\n    SELECT employee_name INTO v_employee_name\n    FROM employees\n    WHERE employee_id = 101;\n\n    DBMS_OUTPUT.PUT_LINE('Employee Name: ' || v_employee_name);\nEXCEPTION\n    WHEN NO_DATA_FOUND THEN\n        DBMS_OUTPUT.PUT_LINE('No employee found with the given ID.');\nEND;\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u5ba3\u544a\u4e86\u4e00\u500b\u8b8a\u6578 <code>v_employee_name<\/code>\uff0c\u7136\u5f8c\u4f7f\u7528 <code>SELECT INTO<\/code> \u8a9e\u53e5\u5f9e <code>employees<\/code> \u8868\u4e2d\u67e5\u8a62\u54e1\u5de5\u59d3\u540d\u3002\u5982\u679c\u627e\u4e0d\u5230\u5c0d\u61c9\u7684\u54e1\u5de5\uff0c\u5247\u6703\u6355\u6349\u5230 <code>NO_DATA_FOUND<\/code> \u7570\u5e38\u4e26\u8f38\u51fa\u76f8\u61c9\u7684\u63d0\u793a\u4fe1\u606f\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e6%b8%b8%e6%a8%99%e9%80%b2%e8%a1%8c%e6%95%b8%e6%93%9a%e6%93%8d%e4%bd%9c-mYhVWKARcL\">\u4f7f\u7528\u6e38\u6a19\u9032\u884c\u6578\u64da\u64cd\u4f5c<\/h2>\n<p>\u6e38\u6a19\u662fPL\/SQL\u4e2d\u7528\u4f86\u8655\u7406\u67e5\u8a62\u7d50\u679c\u96c6\u7684\u4e00\u7a2e\u5de5\u5177\u3002\u4f7f\u7528\u6e38\u6a19\u53ef\u4ee5\u9010\u884c\u8655\u7406\u67e5\u8a62\u7d50\u679c\uff0c\u9019\u5728\u9700\u8981\u5c0d\u6bcf\u4e00\u884c\u6578\u64da\u9032\u884c\u64cd\u4f5c\u6642\u7279\u5225\u6709\u7528\u3002<\/p>\n<h3 id=\"%e7%af%84%e4%be%8b%ef%bc%9a%e4%bd%bf%e7%94%a8%e9%a1%af%e7%a4%ba%e6%b8%b8%e6%a8%99-mYhVWKARcL\">\u7bc4\u4f8b\uff1a\u4f7f\u7528\u986f\u793a\u6e38\u6a19<\/h3>\n<pre><code>\nDECLARE\n    CURSOR emp_cursor IS\n        SELECT employee_id, employee_name FROM employees;\n    v_employee_id employees.employee_id%TYPE;\n    v_employee_name employees.employee_name%TYPE;\nBEGIN\n    OPEN emp_cursor;\n    LOOP\n        FETCH emp_cursor INTO v_employee_id, v_employee_name;\n        EXIT WHEN emp_cursor%NOTFOUND;\n        DBMS_OUTPUT.PUT_LINE('ID: ' || v_employee_id || ', Name: ' || v_employee_name);\n    END LOOP;\n    CLOSE emp_cursor;\nEND;\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u5ba3\u544a\u4e86\u4e00\u500b\u6e38\u6a19 <code>emp_cursor<\/code>\uff0c\u7528\u4f86\u67e5\u8a62\u6240\u6709\u54e1\u5de5\u7684ID\u548c\u59d3\u540d\u3002\u901a\u904e\u5faa\u74b0\uff0c\u6211\u5011\u9010\u884c\u63d0\u53d6\u6578\u64da\u4e26\u8f38\u51fa\u3002<\/p>\n<h2 id=\"%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90-mYhVWKARcL\">\u6700\u4f73\u5be6\u8e10<\/h2>\n<p>\u5728\u4f7f\u7528PL\/SQL\u6642\uff0c\u9075\u5faa\u4e00\u4e9b\u6700\u4f73\u5be6\u8e10\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u78bc\u7684\u53ef\u8b80\u6027\u548c\u6027\u80fd\uff1a<\/p>\n<ul>\n<li><strong>\u4f7f\u7528\u9069\u7576\u7684\u8b8a\u6578\u985e\u578b\uff1a<\/strong>\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u53ef\u4ee5\u7bc0\u7701\u5167\u5b58\u4e26\u63d0\u9ad8\u6027\u80fd\u3002<\/li>\n<li><strong>\u907f\u514d\u4f7f\u7528\u5168\u5c40\u8b8a\u6578\uff1a<\/strong>\u5168\u5c40\u8b8a\u6578\u53ef\u80fd\u5c0e\u81f4\u4ee3\u78bc\u96e3\u4ee5\u7dad\u8b77\uff0c\u61c9\u76e1\u91cf\u4f7f\u7528\u5c40\u90e8\u8b8a\u6578\u3002<\/li>\n<li><strong>\u5408\u7406\u4f7f\u7528\u7570\u5e38\u8655\u7406\uff1a<\/strong>\u5728\u53ef\u80fd\u51fa\u73fe\u932f\u8aa4\u7684\u5730\u65b9\u4f7f\u7528\u7570\u5e38\u8655\u7406\uff0c\u80fd\u5920\u63d0\u9ad8\u7a0b\u5e8f\u7684\u7a69\u5b9a\u6027\u3002<\/li>\n<li><strong>\u6ce8\u91cb\u4ee3\u78bc\uff1a<\/strong>\u70ba\u4ee3\u78bc\u6dfb\u52a0\u6e05\u6670\u7684\u6ce8\u91cb\uff0c\u80fd\u5920\u5e6b\u52a9\u5176\u4ed6\u958b\u767c\u8005\u7406\u89e3\u908f\u8f2f\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-mYhVWKARcL\">\u7e3d\u7d50<\/h2>\n<p>PL\/SQL\u662f\u4e00\u7a2e\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u5728Oracle\u6578\u64da\u5eab\u4e2d\u9032\u884c\u9ad8\u6548\u7684\u6578\u64da\u8655\u7406\u3002\u901a\u904e\u6b63\u78ba\u7684\u7d50\u69cb\u3001\u6e38\u6a19\u7684\u4f7f\u7528\u4ee5\u53ca\u9075\u5faa\u6700\u4f73\u5be6\u8e10\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u7de8\u5beb\u51fa\u9ad8\u6548\u4e14\u6613\u65bc\u7dad\u8b77\u7684\u4ee3\u78bc\u3002\u82e5\u60a8\u9700\u8981\u9032\u4e00\u6b65\u4e86\u89e3\u5982\u4f55\u5728\u9999\u6e2f\u7684\u74b0\u5883\u4e2d\u4f7f\u7528Oracle\u6578\u64da\u5eab\uff0c\u6216\u5c0b\u627e\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u6b63\u78ba\u4f7f\u7528PL\/SQL\u5728Oracle\u6578\u64da\u5eab\u4e2d\u9032\u884c\u9ad8\u6548\u6578\u64da\u8655\u7406\u548c\u7ba1\u7406\uff0c\u63d0\u5347\u958b\u767c\u6548\u7387\u8207\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-95794","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95794","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=95794"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95794\/revisions"}],"predecessor-version":[{"id":95795,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95794\/revisions\/95795"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=95794"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=95794"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=95794"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}