{"id":96224,"date":"2024-10-20T07:38:15","date_gmt":"2024-10-19T23:38:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/96224\/"},"modified":"2024-10-20T07:38:16","modified_gmt":"2024-10-19T23:38:16","slug":"oracle%e6%b8%b8%e6%a8%99%e5%b8%b8%e7%94%a8%e5%b1%ac%e6%80%a7","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/96224\/","title":{"rendered":"Oracle\u6e38\u6a19\u5e38\u7528\u5c6c\u6027"},"content":{"rendered":"<h1 id=\"oracle%e6%b8%b8%e6%a8%99%e5%b8%b8%e7%94%a8%e5%b1%ac%e6%80%a7-ABRXMklgCt\">Oracle\u6e38\u6a19\u5e38\u7528\u5c6c\u6027<\/h1>\n<p>\u5728Oracle\u8cc7\u6599\u5eab\u4e2d\uff0c\u6e38\u6a19\u662f\u4e00\u7a2e\u7528\u65bc\u64cd\u4f5c\u67e5\u8a62\u7d50\u679c\u96c6\u7684\u5de5\u5177\u3002\u6e38\u6a19\u5141\u8a31\u958b\u767c\u8005\u9010\u884c\u8655\u7406\u67e5\u8a62\u7d50\u679c\uff0c\u9019\u5728\u9700\u8981\u5c0d\u6bcf\u4e00\u884c\u9032\u884c\u7279\u5b9a\u64cd\u4f5c\u6642\u7279\u5225\u6709\u7528\u3002\u672c\u6587\u5c07\u63a2\u8a0eOracle\u6e38\u6a19\u7684\u5e38\u7528\u5c6c\u6027\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u6709\u6548\u5730\u4f7f\u7528\u6e38\u6a19\u9032\u884c\u8cc7\u6599\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"%e6%b8%b8%e6%a8%99%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-ABRXMklgCt\">\u6e38\u6a19\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u6e38\u6a19\u53ef\u4ee5\u88ab\u8996\u70ba\u4e00\u500b\u6307\u5411\u67e5\u8a62\u7d50\u679c\u96c6\u7684\u6307\u91dd\u3002\u7576\u57f7\u884c\u4e00\u500b\u67e5\u8a62\u6642\uff0cOracle\u6703\u751f\u6210\u4e00\u500b\u7d50\u679c\u96c6\uff0c\u4e26\u70ba\u9019\u500b\u7d50\u679c\u96c6\u5275\u5efa\u4e00\u500b\u6e38\u6a19\u3002\u958b\u767c\u8005\u53ef\u4ee5\u4f7f\u7528\u6e38\u6a19\u4f86\u904d\u6b77\u9019\u500b\u7d50\u679c\u96c6\uff0c\u4e26\u5c0d\u6bcf\u4e00\u884c\u9032\u884c\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"%e6%b8%b8%e6%a8%99%e7%9a%84%e5%b8%b8%e7%94%a8%e5%b1%ac%e6%80%a7-ABRXMklgCt\">\u6e38\u6a19\u7684\u5e38\u7528\u5c6c\u6027<\/h2>\n<p>\u5728Oracle\u4e2d\uff0c\u6e38\u6a19\u6709\u5e7e\u500b\u91cd\u8981\u7684\u5c6c\u6027\uff0c\u9019\u4e9b\u5c6c\u6027\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u597d\u5730\u63a7\u5236\u6e38\u6a19\u7684\u884c\u70ba\uff1a<\/p>\n<h3 id=\"1-found-ABRXMklgCt\">1. %FOUND<\/h3>\n<p>\u9019\u500b\u5c6c\u6027\u7528\u65bc\u6aa2\u67e5\u6e38\u6a19\u662f\u5426\u627e\u5230\u4efb\u4f55\u884c\u3002\u7576\u6e38\u6a19\u6210\u529f\u5730\u6aa2\u7d22\u5230\u4e00\u884c\u6642\uff0c%FOUND\u5c6c\u6027\u8fd4\u56deTRUE\uff0c\u5426\u5247\u8fd4\u56deFALSE\u3002<\/p>\n<pre><code>IF cursor_name%FOUND THEN\n    -- \u57f7\u884c\u67d0\u4e9b\u64cd\u4f5c\nEND IF;<\/code><\/pre>\n<h3 id=\"2-notfound-ABRXMklgCt\">2. %NOTFOUND<\/h3>\n<p>\u8207%FOUND\u76f8\u5c0d\uff0c%NOTFOUND\u5c6c\u6027\u7528\u65bc\u6aa2\u67e5\u6e38\u6a19\u662f\u5426\u672a\u627e\u5230\u4efb\u4f55\u884c\u3002\u5982\u679c\u6e38\u6a19\u672a\u627e\u5230\u884c\uff0c\u5247\u8fd4\u56deTRUE\uff0c\u5426\u5247\u8fd4\u56deFALSE\u3002<\/p>\n<pre><code>IF cursor_name%NOTFOUND THEN\n    -- \u57f7\u884c\u67d0\u4e9b\u64cd\u4f5c\nEND IF;<\/code><\/pre>\n<h3 id=\"3-rowcount-ABRXMklgCt\">3. %ROWCOUNT<\/h3>\n<p>%ROWCOUNT\u5c6c\u6027\u8fd4\u56de\u6e38\u6a19\u5df2\u6aa2\u7d22\u7684\u884c\u6578\u3002\u9019\u5c0d\u65bc\u9700\u8981\u77e5\u9053\u5df2\u8655\u7406\u591a\u5c11\u884c\u7684\u60c5\u6cc1\u7279\u5225\u6709\u7528\u3002<\/p>\n<pre><code>DBMS_OUTPUT.PUT_LINE('\u5df2\u6aa2\u7d22\u7684\u884c\u6578: ' || cursor_name%ROWCOUNT);<\/code><\/pre>\n<h3 id=\"4-bulk_rowcount-ABRXMklgCt\">4. %BULK_ROWCOUNT<\/h3>\n<p>\u7576\u4f7f\u7528\u6279\u91cf\u64cd\u4f5c\u6642\uff0c%BULK_ROWCOUNT\u5c6c\u6027\u53ef\u4ee5\u8fd4\u56de\u6bcf\u6b21\u6279\u91cf\u64cd\u4f5c\u6240\u5f71\u97ff\u7684\u884c\u6578\u3002\u9019\u5c0d\u65bc\u6027\u80fd\u512a\u5316\u975e\u5e38\u91cd\u8981\u3002<\/p>\n<pre><code>FORALL i IN 1..collection.COUNT\n    INSERT INTO table_name VALUES collection(i);\nDBMS_OUTPUT.PUT_LINE('\u6bcf\u6b21\u6279\u91cf\u64cd\u4f5c\u5f71\u97ff\u7684\u884c\u6578: ' || SQL%BULK_ROWCOUNT(i));<\/code><\/pre>\n<h3 id=\"5-isopen-ABRXMklgCt\">5. %ISOPEN<\/h3>\n<p>%ISOPEN\u5c6c\u6027\u7528\u65bc\u6aa2\u67e5\u6e38\u6a19\u662f\u5426\u4ecd\u7136\u6253\u958b\u3002\u9019\u5728\u9700\u8981\u78ba\u4fdd\u6e38\u6a19\u72c0\u614b\u7684\u60c5\u6cc1\u4e0b\u975e\u5e38\u6709\u7528\u3002<\/p>\n<pre><code>IF cursor_name%ISOPEN THEN\n    -- \u6e38\u6a19\u4ecd\u7136\u6253\u958b\nEND IF;<\/code><\/pre>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e6%b8%b8%e6%a8%99%e7%9a%84%e7%af%84%e4%be%8b-ABRXMklgCt\">\u4f7f\u7528\u6e38\u6a19\u7684\u7bc4\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u7bc4\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528\u6e38\u6a19\u53ca\u5176\u5c6c\u6027\uff1a<\/p>\n<pre><code>DECLARE\n    CURSOR emp_cursor IS\n        SELECT employee_id, employee_name FROM employees;\n    emp_record emp_cursor%ROWTYPE;\nBEGIN\n    OPEN emp_cursor;\n    LOOP\n        FETCH emp_cursor INTO emp_record;\n        EXIT WHEN emp_cursor%NOTFOUND;\n        DBMS_OUTPUT.PUT_LINE('\u54e1\u5de5ID: ' || emp_record.employee_id || ', \u59d3\u540d: ' || emp_record.employee_name);\n    END LOOP;\n    CLOSE emp_cursor;\nEND;<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-ABRXMklgCt\">\u7e3d\u7d50<\/h2>\n<p>Oracle\u6e38\u6a19\u7684\u5e38\u7528\u5c6c\u6027\u5982%FOUND\u3001%NOTFOUND\u3001%ROWCOUNT\u3001%BULK_ROWCOUNT\u548c%ISOPEN\u7b49\uff0c\u70ba\u958b\u767c\u8005\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u5de5\u5177\u4f86\u64cd\u4f5c\u548c\u7ba1\u7406\u67e5\u8a62\u7d50\u679c\u96c6\u3002\u900f\u904e\u9019\u4e9b\u5c6c\u6027\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u66f4\u9748\u6d3b\u5730\u63a7\u5236\u8cc7\u6599\u7684\u8655\u7406\u6d41\u7a0b\uff0c\u63d0\u5347\u61c9\u7528\u7a0b\u5f0f\u7684\u6027\u80fd\u548c\u53ef\u7dad\u8b77\u6027\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u5728\u60a8\u7684\u61c9\u7528\u4e2d\u4f7f\u7528\u9019\u4e9b\u6e38\u6a19\u5c6c\u6027\u6709\u9032\u4e00\u6b65\u7684\u9700\u6c42\uff0c\u6216\u662f\u9700\u8981\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u63f4\u60a8\u7684\u8cc7\u6599\u5eab\u64cd\u4f5c\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3Oracle\u6e38\u6a19\u7684\u5e38\u7528\u5c6c\u6027\uff0c\u5305\u62ec%FOUND\u3001%NOTFOUND\u3001%ROWCOUNT\u548c%ISOPEN\uff0c\u63d0\u5347\u6578\u64da\u64cd\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-96224","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96224","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=96224"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96224\/revisions"}],"predecessor-version":[{"id":96225,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96224\/revisions\/96225"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=96224"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=96224"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=96224"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}