{"id":6102,"date":"2024-11-14T09:44:54","date_gmt":"2024-11-14T01:44:54","guid":{"rendered":"https:\/\/fwq.ai\/blog\/6102\/"},"modified":"2024-11-14T09:44:54","modified_gmt":"2024-11-14T01:44:54","slug":"oracle%e6%b8%b8%e6%a0%87%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/6102\/","title":{"rendered":"oracle\u6e38\u6807\u5982\u4f55\u4f7f\u7528"},"content":{"rendered":"<blockquote><p>\n  oracle\u6e38\u6807\u662f\u4e00\u79cd\u6570\u636e\u5e93\u6307\u9488\uff0c\u7528\u4e8e\u904d\u5386\u8bb0\u5f55\u96c6\uff0c\u5176\u7279\u70b9\u5305\u62ec\u9010\u4e2a\u8bb0\u5f55\u5904\u7406\u3001\u63d0\u9ad8\u6548\u7387\u3001\u53ef\u66f4\u65b0\u6027\u548c\u5b89\u5168\u6027\u3002\u4f7f\u7528\u573a\u666f\u5305\u62ec\u5206\u6279\u5904\u7406\u6570\u636e\u3001\u66f4\u65b0\u6216\u5220\u9664\u7279\u5b9a\u8bb0\u5f55\u548c\u4e8b\u52a1\u5904\u7406\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202406\/12\/2024061223182487041.jpg\" class=\"aligncenter\" title=\"oracle\u6e38\u6807\u5982\u4f55\u4f7f\u7528\u63d2\u56fe\" alt=\"oracle\u6e38\u6807\u5982\u4f55\u4f7f\u7528\u63d2\u56fe\" \/><\/p>\n<p><strong>Oracle\u6e38\u6807\u7684\u4f7f\u7528<\/strong><\/p>\n<p>Oracle\u6e38\u6807\u662f\u4e00\u79cd\u6570\u636e\u5e93\u5bf9\u8c61\uff0c\u7528\u4e8e\u5728\u6570\u636e\u96c6\u4e2d\u904d\u5386\u8bb0\u5f55\u3002\u5b83\u662f\u4e00\u4e2a\u6570\u636e\u5e93\u6307\u9488\uff0c\u5f15\u7528\u6570\u636e\u5e93\u4e2d\u7684\u4e00\u4e2a\u7ed3\u679c\u96c6\u3002\u6e38\u6807\u4f7f\u5f00\u53d1\u4eba\u5458\u80fd\u591f\u9010\u4e2a\u8bb0\u5f55\u5730\u5904\u7406\u6570\u636e\uff0c\u800c\u4e0d\u662f\u4e00\u6b21\u6027\u68c0\u7d22\u6574\u4e2a\u7ed3\u679c\u96c6\u3002<\/p>\n<p><strong>\u6e38\u6807\u7684\u5de5\u4f5c\u539f\u7406\uff1a<\/strong><\/p>\n<ol>\n<li> <strong>\u58f0\u660e\u6e38\u6807\uff1a<\/strong>\u4f7f\u7528DECLARE\u8bed\u53e5\u58f0\u660e\u4e00\u4e2a\u6e38\u6807\uff0c\u5e76\u6307\u5b9a\u8981\u8fd4\u56de\u7684\u67e5\u8be2\u3002<\/li>\n<li> <strong>\u6253\u5f00\u6e38\u6807\uff1a<\/strong>\u4f7f\u7528OPEN\u8bed\u53e5\u6253\u5f00\u6e38\u6807\uff0c\u5b83\u5c06\u6267\u884c\u5e76\u8fd4\u56de\u67e5\u8be2\u7684\u7ed3\u679c\u3002<\/li>\n<li> <strong>\u83b7\u53d6\u8bb0\u5f55\uff1a<\/strong>\u4f7f\u7528FETCH\u8bed\u53e5\u83b7\u53d6\u6e38\u6807\u5f53\u524d\u6307\u5411\u7684\u8bb0\u5f55\u3002<\/li>\n<li> <strong>\u5904\u7406\u8bb0\u5f55\uff1a<\/strong>\u5904\u7406\u83b7\u53d6\u5230\u7684\u8bb0\u5f55\uff0c\u4f8b\u5982\u663e\u793a\u3001\u4fee\u6539\u6216\u4fdd\u5b58\u5230\u53e6\u4e00\u4e2a\u6570\u636e\u6e90\u3002<\/li>\n<li> <strong>\u5173\u95ed\u6e38\u6807\uff1a<\/strong>\u4f7f\u7528CLOSE\u8bed\u53e5\u5173\u95ed\u6e38\u6807\uff0c\u91ca\u653e\u5b83\u5360\u7528\u7684\u8d44\u6e90\u3002<\/li>\n<\/ol>\n<p><strong>\u6e38\u6807\u7684\u7279\u70b9\uff1a<\/strong><\/p>\n<ul>\n<li> <strong>\u9010\u4e2a\u8bb0\u5f55\u5904\u7406\uff1a<\/strong>\u6e38\u6807\u5141\u8bb8\u5f00\u53d1\u4eba\u5458\u9010\u4e2a\u8bb0\u5f55\u5730\u904d\u5386\u7ed3\u679c\u96c6\uff0c\u800c\u4e0d\u662f\u4e00\u6b21\u6027\u68c0\u7d22\u6240\u6709\u8bb0\u5f55\u3002<\/li>\n<li> <strong>\u63d0\u9ad8\u6548\u7387\uff1a<\/strong>\u5bf9\u4e8e\u5927\u578b\u7ed3\u679c\u96c6\uff0c\u4f7f\u7528\u6e38\u6807\u53ef\u4ee5\u63d0\u9ad8\u6548\u7387\uff0c\u56e0\u4e3a\u5b83\u4e00\u6b21\u53ea\u5904\u7406\u4e00\u4e2a\u8bb0\u5f55\uff0c\u51cf\u5c11\u5185\u5b58\u548c\u7f51\u7edc\u5f00\u9500\u3002<\/li>\n<li> <strong>\u53ef\u66f4\u65b0\u6027\uff1a<\/strong>\u67d0\u4e9b\u6e38\u6807\u662f\u53ef\u66f4\u65b0\u7684\uff0c\u8fd9\u610f\u5473\u7740\u5f00\u53d1\u4eba\u5458\u53ef\u4ee5\u5728\u83b7\u53d6\u8bb0\u5f55\u540e\u5bf9\u5176\u8fdb\u884c\u4fee\u6539\u3002<\/li>\n<li> <strong>\u5b89\u5168\u6027\uff1a<\/strong>\u6e38\u6807\u53ef\u4ee5\u7528\u4e8e\u63a7\u5236\u5bf9\u7684\u8bbf\u95ee\uff0c\u56e0\u4e3a\u5b83\u4eec\u53ea\u80fd\u8bbf\u95ee\u5f53\u524d\u6307\u5411\u7684\u8bb0\u5f55\uff0c\u800c\u4e0d\u662f\u6574\u4e2a\u7ed3\u679c\u96c6\u3002<\/li>\n<\/ul>\n<p><strong>\u6e38\u6807\u7684\u4f7f\u7528\u573a\u666f\uff1a<\/strong><\/p>\n<ul>\n<li>\u9010\u884c\u5904\u7406\u5927\u578b\u7ed3\u679c\u96c6<\/li>\n<li>\u5206\u6279\u5904\u7406\u6570\u636e<\/li>\n<li>\u66f4\u65b0\u6216\u5220\u9664\u7279\u5b9a\u7684\u8bb0\u5f55<\/li>\n<li>\u4fdd\u6301\u5bf9\u7279\u5b9a\u6570\u636e\u7684\u9501\u5b9a<\/li>\n<li>\u5b9e\u73b0\u4e8b\u52a1\u5904\u7406<\/li>\n<\/ul>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<pre>-- \u58f0\u660e\u4e00\u4e2a\u6e38\u6807\nDECLARE cursor_name CURSOR FOR\nSELECT * FROM table_name;\n\n-- \u6253\u5f00\u6e38\u6807\nOPEN cursor_name;\n\n-- \u9010\u4e2a\u8bb0\u5f55\u83b7\u53d6\u7ed3\u679c\nFETCH cursor_name INTO variable1, variable2;\n\n-- \u5904\u7406\u83b7\u53d6\u5230\u7684\u8bb0\u5f55\n-- ...\n\n-- \u5173\u95ed\u6e38\u6807\nCLOSE cursor_name;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u6e38\u6807\u5982\u4f55\u4f7f\u7528\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>oracle\u6e38\u6807\u662f\u4e00\u79cd\u6570\u636e\u5e93\u6307\u9488\uff0c\u7528\u4e8e\u904d\u5386\u8bb0\u5f55\u96c6\uff0c\u5176\u7279\u70b9\u5305\u62ec\u9010\u4e2a\u8bb0\u5f55\u5904\u7406\u3001\u63d0\u9ad8\u6548\u7387\u3001\u53ef\u66f4\u65b0\u6027\u548c\u5b89\u5168\u6027\u3002\u4f7f\u7528\u573a\u666f\u5305\u62ec\u5206\u6279\u5904\u7406\u6570\u636e\u3001\u66f4\u65b0\u6216\u5220\u9664\u7279\u5b9a\u8bb0\u5f55\u548c\u4e8b\u52a1\u5904\u7406\u3002 Oracle\u6e38\u6807\u7684\u4f7f\u7528 Oracle\u6e38\u6807\u662f\u4e00\u79cd\u6570\u636e\u5e93\u5bf9\u8c61\uff0c\u7528\u4e8e\u5728\u6570\u636e\u96c6\u4e2d\u904d\u5386\u8bb0\u5f55\u3002\u5b83\u662f\u4e00\u4e2a\u6570\u636e\u5e93\u6307\u9488\uff0c\u5f15\u7528\u6570\u636e\u5e93\u4e2d\u7684\u4e00\u4e2a\u7ed3\u679c\u96c6\u3002\u6e38\u6807\u4f7f\u5f00\u53d1\u4eba\u5458\u80fd\u591f\u9010\u4e2a\u8bb0\u5f55\u5730\u5904\u7406\u6570\u636e\uff0c\u800c\u4e0d\u662f\u4e00\u6b21\u6027\u68c0\u7d22\u6574\u4e2a\u7ed3\u679c\u96c6\u3002 \u6e38\u6807\u7684\u5de5\u4f5c\u539f\u7406\uff1a \u58f0\u660e\u6e38\u6807\uff1a\u4f7f\u7528DECLARE\u8bed\u53e5\u58f0\u660e\u4e00\u4e2a\u6e38\u6807\uff0c\u5e76\u6307\u5b9a\u8981\u8fd4\u56de\u7684\u67e5\u8be2\u3002 \u6253\u5f00\u6e38\u6807\uff1a\u4f7f\u7528OPEN\u8bed\u53e5\u6253\u5f00\u6e38\u6807\uff0c\u5b83\u5c06\u6267\u884c\u5e76\u8fd4\u56de\u67e5\u8be2\u7684\u7ed3\u679c\u3002 \u83b7\u53d6\u8bb0\u5f55\uff1a\u4f7f\u7528FETCH\u8bed\u53e5\u83b7\u53d6\u6e38\u6807\u5f53\u524d\u6307\u5411\u7684\u8bb0\u5f55\u3002 \u5904\u7406\u8bb0\u5f55\uff1a\u5904\u7406\u83b7\u53d6\u5230\u7684\u8bb0\u5f55\uff0c\u4f8b\u5982\u663e\u793a\u3001\u4fee\u6539\u6216\u4fdd\u5b58\u5230\u53e6\u4e00\u4e2a\u6570\u636e\u6e90\u3002 \u5173\u95ed\u6e38\u6807\uff1a\u4f7f\u7528CLOSE\u8bed\u53e5\u5173\u95ed\u6e38\u6807\uff0c\u91ca\u653e\u5b83\u5360\u7528\u7684\u8d44\u6e90\u3002 \u6e38\u6807\u7684\u7279\u70b9\uff1a \u9010\u4e2a\u8bb0\u5f55\u5904\u7406\uff1a\u6e38\u6807\u5141\u8bb8\u5f00\u53d1\u4eba\u5458\u9010\u4e2a\u8bb0\u5f55\u5730\u904d\u5386\u7ed3\u679c\u96c6\uff0c\u800c\u4e0d\u662f\u4e00\u6b21\u6027\u68c0\u7d22\u6240\u6709\u8bb0\u5f55\u3002 \u63d0\u9ad8\u6548\u7387\uff1a\u5bf9\u4e8e\u5927\u578b\u7ed3\u679c\u96c6\uff0c\u4f7f\u7528\u6e38\u6807\u53ef\u4ee5\u63d0\u9ad8\u6548\u7387\uff0c\u56e0\u4e3a\u5b83\u4e00\u6b21\u53ea\u5904\u7406\u4e00\u4e2a\u8bb0\u5f55\uff0c\u51cf\u5c11\u5185\u5b58\u548c\u7f51\u7edc\u5f00\u9500\u3002 \u53ef\u66f4\u65b0\u6027\uff1a\u67d0\u4e9b\u6e38\u6807\u662f\u53ef\u66f4\u65b0\u7684\uff0c\u8fd9\u610f\u5473\u7740\u5f00\u53d1\u4eba\u5458\u53ef\u4ee5\u5728\u83b7\u53d6\u8bb0\u5f55\u540e\u5bf9\u5176\u8fdb\u884c\u4fee\u6539\u3002 \u5b89\u5168\u6027\uff1a\u6e38\u6807\u53ef\u4ee5\u7528\u4e8e\u63a7\u5236\u5bf9\u7684\u8bbf\u95ee\uff0c\u56e0\u4e3a\u5b83\u4eec\u53ea\u80fd\u8bbf\u95ee\u5f53\u524d\u6307\u5411\u7684\u8bb0\u5f55\uff0c\u800c\u4e0d\u662f\u6574\u4e2a\u7ed3\u679c\u96c6\u3002 \u6e38\u6807\u7684\u4f7f\u7528\u573a\u666f\uff1a \u9010\u884c\u5904\u7406\u5927\u578b\u7ed3\u679c\u96c6 \u5206\u6279\u5904\u7406\u6570\u636e \u66f4\u65b0\u6216\u5220\u9664\u7279\u5b9a\u7684\u8bb0\u5f55 \u4fdd\u6301\u5bf9\u7279\u5b9a\u6570\u636e\u7684\u9501\u5b9a \u5b9e\u73b0\u4e8b\u52a1\u5904\u7406 \u793a\u4f8b\uff1a &#8212; \u58f0\u660e\u4e00\u4e2a\u6e38\u6807 DECLARE cursor_name CURSOR FOR SELECT * FROM table_name; &#8212; \u6253\u5f00\u6e38\u6807 OPEN cursor_name; &#8212; \u9010\u4e2a\u8bb0\u5f55\u83b7\u53d6\u7ed3\u679c FETCH cursor_name INTO variable1, variable2; &#8212; \u5904\u7406\u83b7\u53d6\u5230\u7684\u8bb0\u5f55 &#8212; &#8230; &#8212; \u5173\u95ed\u6e38\u6807 CLOSE cursor_name; \u767b\u5f55\u540e\u590d\u5236 \u4ee5\u4e0a\u5c31\u662f\u6e38\u6807\u5982\u4f55\u4f7f\u7528\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-6102","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6102","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=6102"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6102\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=6102"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=6102"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=6102"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}