{"id":180580,"date":"2024-11-09T11:27:26","date_gmt":"2024-11-09T03:27:26","guid":{"rendered":"https:\/\/server.hk\/cnblog\/180580\/"},"modified":"2024-11-09T11:27:27","modified_gmt":"2024-11-09T03:27:27","slug":"%e6%b7%b1%e5%85%a5%e9%ab%98%e6%80%a7%e8%83%bd%e7%9a%84oracle%e5%8b%95%e6%85%8bsql%e9%96%8b%e7%99%bc","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/180580\/","title":{"rendered":"\u6df1\u5165\u9ad8\u6027\u80fd\u7684Oracle\u52d5\u614bSQL\u958b\u767c"},"content":{"rendered":"<h1 id=\"%e6%b7%b1%e5%85%a5%e9%ab%98%e6%80%a7%e8%83%bd%e7%9a%84oracle%e5%8b%95%e6%85%8bsql%e9%96%8b%e7%99%bc-RdnvwfYypI\">\u6df1\u5165\u9ad8\u6027\u80fd\u7684Oracle\u52d5\u614bSQL\u958b\u767c<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u6027\u80fd\u5c0d\u65bc\u61c9\u7528\u7a0b\u5e8f\u7684\u6574\u9ad4\u6548\u7387\u81f3\u95dc\u91cd\u8981\u3002Oracle\u6578\u64da\u5eab\u4f5c\u70ba\u4e00\u500b\u5f37\u5927\u7684\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u529f\u80fd\u4f86\u652f\u6301\u9ad8\u6027\u80fd\u7684\u6578\u64da\u8655\u7406\u3002\u5176\u4e2d\uff0c\u52d5\u614bSQL\u662f\u4e00\u500b\u91cd\u8981\u7684\u7279\u6027\uff0c\u5141\u8a31\u958b\u767c\u8005\u5728\u904b\u884c\u6642\u751f\u6210\u548c\u57f7\u884cSQL\u8a9e\u53e5\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eOracle\u52d5\u614bSQL\u7684\u958b\u767c\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u6700\u4f73\u5be6\u8e10\u548c\u793a\u4f8b\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%8b%95%e6%85%8bsql%ef%bc%9f-RdnvwfYypI\">\u4ec0\u9ebc\u662f\u52d5\u614bSQL\uff1f<\/h2>\n<p>\u52d5\u614bSQL\u662f\u6307\u5728\u7a0b\u5e8f\u904b\u884c\u6642\u751f\u6210\u548c\u57f7\u884c\u7684SQL\u8a9e\u53e5\u3002\u8207\u975c\u614bSQL\u4e0d\u540c\uff0c\u975c\u614bSQL\u5728\u7de8\u8b6f\u6642\u5c31\u5df2\u7d93\u78ba\u5b9a\u4e86\u8a9e\u53e5\u7684\u7d50\u69cb\u548c\u5167\u5bb9\u3002\u52d5\u614bSQL\u7684\u4e3b\u8981\u512a\u52e2\u5728\u65bc\u5176\u9748\u6d3b\u6027\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6839\u64da\u4e0d\u540c\u7684\u689d\u4ef6\u751f\u6210\u4e0d\u540c\u7684SQL\u8a9e\u53e5\uff0c\u9019\u5728\u8655\u7406\u8907\u96dc\u67e5\u8a62\u6216\u7528\u6236\u8f38\u5165\u6642\u7279\u5225\u6709\u7528\u3002<\/p>\n<h2 id=\"oracle%e4%b8%ad%e7%9a%84%e5%8b%95%e6%85%8bsql%e5%af%a6%e7%8f%be-RdnvwfYypI\">Oracle\u4e2d\u7684\u52d5\u614bSQL\u5be6\u73fe<\/h2>\n<p>\u5728Oracle\u4e2d\uff0c\u52d5\u614bSQL\u53ef\u4ee5\u901a\u904ePL\/SQL\u7684`EXECUTE IMMEDIATE`\u8a9e\u53e5\u6216`DBMS_SQL`\u5305\u4f86\u5be6\u73fe\u3002\u4ee5\u4e0b\u662f\u9019\u5169\u7a2e\u65b9\u6cd5\u7684\u7c21\u8981\u4ecb\u7d39\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8execute-immediate-RdnvwfYypI\">1. \u4f7f\u7528EXECUTE IMMEDIATE<\/h3>\n<p>`EXECUTE IMMEDIATE`\u662f\u4e00\u7a2e\u7c21\u55ae\u4e14\u9ad8\u6548\u7684\u65b9\u5f0f\u4f86\u57f7\u884c\u52d5\u614bSQL\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n<pre><code>DECLARE\n    v_sql VARCHAR2(100);\n    v_emp_name VARCHAR2(100);\nBEGIN\n    v_sql := 'SELECT first_name FROM employees WHERE employee_id = :id';\n    EXECUTE IMMEDIATE v_sql INTO v_emp_name USING 101;\n    DBMS_OUTPUT.PUT_LINE('Employee Name: ' || v_emp_name);\nEND;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u4f7f\u7528`EXECUTE IMMEDIATE`\u4f86\u57f7\u884c\u4e00\u500b\u67e5\u8a62\uff0c\u4e26\u5c07\u7d50\u679c\u5b58\u5132\u5728\u8b8a\u91cf`v_emp_name`\u4e2d\u3002<\/p>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8dbms_sql%e5%8c%85-RdnvwfYypI\">2. \u4f7f\u7528DBMS_SQL\u5305<\/h3>\n<p>`DBMS_SQL`\u5305\u63d0\u4f9b\u4e86\u66f4\u9ad8\u7d1a\u7684\u529f\u80fd\uff0c\u9069\u5408\u9700\u8981\u66f4\u8907\u96dc\u7684\u52d5\u614bSQL\u64cd\u4f5c\u7684\u60c5\u6cc1\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528`DBMS_SQL`\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>DECLARE\n    v_cursor INTEGER;\n    v_sql VARCHAR2(100);\n    v_emp_name VARCHAR2(100);\n    v_id NUMBER := 101;\nBEGIN\n    v_sql := 'SELECT first_name FROM employees WHERE employee_id = :id';\n    v_cursor := DBMS_SQL.OPEN_CURSOR;\n    DBMS_SQL.PARSE(v_cursor, v_sql, DBMS_SQL.NATIVE);\n    DBMS_SQL.BIND_VARIABLE(v_cursor, ':id', v_id);\n    DBMS_SQL.DEFINE_COLUMN(v_cursor, 1, v_emp_name, 100);\n    \n    IF DBMS_SQL.EXECUTE(v_cursor) &gt; 0 THEN\n        IF DBMS_SQL.FETCH_ROWS(v_cursor) &gt; 0 THEN\n            DBMS_SQL.COLUMN_VALUE(v_cursor, 1, v_emp_name);\n            DBMS_OUTPUT.PUT_LINE('Employee Name: ' || v_emp_name);\n        END IF;\n    END IF;\n    \n    DBMS_SQL.CLOSE_CURSOR(v_cursor);\nEND;<\/code><\/pre>\n<p>\u9019\u6bb5\u4ee3\u78bc\u5c55\u793a\u4e86\u5982\u4f55\u4f7f\u7528`DBMS_SQL`\u5305\u4f86\u57f7\u884c\u52d5\u614bSQL\uff0c\u4e26\u4e14\u80fd\u5920\u8655\u7406\u66f4\u8907\u96dc\u7684\u67e5\u8a62\u548c\u7d50\u679c\u96c6\u3002<\/p>\n<h2 id=\"%e5%8b%95%e6%85%8bsql%e7%9a%84%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90-RdnvwfYypI\">\u52d5\u614bSQL\u7684\u6700\u4f73\u5be6\u8e10<\/h2>\n<ul>\n<li><strong>\u907f\u514dSQL\u6ce8\u5165\uff1a<\/strong>\u5728\u4f7f\u7528\u52d5\u614bSQL\u6642\uff0c\u52d9\u5fc5\u4f7f\u7528\u7d81\u5b9a\u8b8a\u91cf\u4f86\u9632\u6b62SQL\u6ce8\u5165\u653b\u64ca\u3002<\/li>\n<li><strong>\u6027\u80fd\u8003\u91cf\uff1a<\/strong>\u52d5\u614bSQL\u7684\u89e3\u6790\u548c\u57f7\u884c\u53ef\u80fd\u6703\u5f71\u97ff\u6027\u80fd\uff0c\u61c9\u8b39\u614e\u4f7f\u7528\u3002<\/li>\n<li><strong>\u4ee3\u78bc\u53ef\u8b80\u6027\uff1a<\/strong>\u904e\u5ea6\u4f7f\u7528\u52d5\u614bSQL\u53ef\u80fd\u6703\u4f7f\u4ee3\u78bc\u8b8a\u5f97\u96e3\u4ee5\u7dad\u8b77\uff0c\u61c9\u4fdd\u6301\u4ee3\u78bc\u7684\u6e05\u6670\u548c\u53ef\u8b80\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-RdnvwfYypI\">\u7e3d\u7d50<\/h2>\n<p>\u52d5\u614bSQL\u5728Oracle\u6578\u64da\u5eab\u958b\u767c\u4e2d\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u63d0\u4f9b\u9748\u6d3b\u6027\u548c\u6548\u7387\u3002\u7136\u800c\uff0c\u958b\u767c\u8005\u5728\u4f7f\u7528\u6642\u9700\u8981\u8b39\u614e\u8003\u616e\u5b89\u5168\u6027\u548c\u6027\u80fd\u554f\u984c\u3002\u901a\u904e\u6b63\u78ba\u7684\u5be6\u73fe\u548c\u6700\u4f73\u5be6\u8e10\uff0c\u52d5\u614bSQL\u53ef\u4ee5\u986f\u8457\u63d0\u5347\u61c9\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u53ef\u64f4\u5c55\u6027\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6027\u80fd\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u4f86\u652f\u6301\u60a8\u7684Oracle\u6578\u64da\u5eab\u958b\u767c\u9700\u6c42\u3002\u7121\u8ad6\u662f\u52d5\u614bSQL\u9084\u662f\u5176\u4ed6\u6578\u64da\u5eab\u6280\u8853\uff0c\u9078\u64c7\u5408\u9069\u7684\u57fa\u790e\u8a2d\u65bd\u90fd\u662f\u6210\u529f\u7684\u95dc\u9375\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u9ad8\u6027\u80fdOracle\u52d5\u614bSQL\u958b\u767c\u7684\u6280\u5de7\u8207\u6700\u4f73\u5be6\u8e10\uff0c\u63d0\u5347\u6578\u64da\u5eab\u6548\u80fd\u8207\u61c9\u7528\u7a0b\u5e8f\u9748\u6d3b\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-180580","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/180580","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=180580"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/180580\/revisions"}],"predecessor-version":[{"id":180581,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/180580\/revisions\/180581"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=180580"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=180580"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=180580"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}