{"id":5004,"date":"2024-11-14T12:34:07","date_gmt":"2024-11-14T04:34:07","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5004\/"},"modified":"2024-11-14T12:34:07","modified_gmt":"2024-11-14T04:34:07","slug":"oracle%e5%ad%90%e6%9f%a5%e8%af%a2%e6%80%8e%e4%b9%88%e7%94%a8","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5004\/","title":{"rendered":"oracle\u5b50\u67e5\u8be2\u600e\u4e48\u7528"},"content":{"rendered":"<blockquote><p>\n  \u5b50\u67e5\u8be2\u662f\u5d4c\u5957\u5728\u4e3b\u67e5\u8be2\u4e2d\u7684\u72ec\u7acb\u67e5\u8be2\uff0c\u7528\u4e8e\u63d0\u4f9b\u6570\u636e\u3002oracle\u652f\u6301\u76f8\u5173\u548c\u975e\u76f8\u5173\u5b50\u67e5\u8be2\uff0c\u8bed\u6cd5\u4e3a\uff1a(\u5b50\u67e5\u8be2)\u3002\u4f7f\u7528\u6b65\u9aa4\u5305\u62ec\uff1a\u786e\u5b9a\u6570\u636e\u9700\u6c42\u3001\u7f16\u5199\u5b50\u67e5\u8be2\u3001\u5d4c\u5165\u4e3b\u67e5\u8be2\u3002\u4f18\u70b9\u5305\u62ec\uff1a\u63d0\u9ad8\u6027\u80fd\u3001\u7b80\u5316\u67e5\u8be2\u3001\u63d0\u4f9b\u7b5b\u9009\u548c\u805a\u5408\u7075\u6d3b\u6027\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202405\/21\/2024052110002842953.jpg\" class=\"aligncenter\" title=\"oracle\u5b50\u67e5\u8be2\u600e\u4e48\u7528\u63d2\u56fe\" alt=\"oracle\u5b50\u67e5\u8be2\u600e\u4e48\u7528\u63d2\u56fe\" \/><\/p>\n<p><strong>Oracle \u5b50\u67e5\u8be2\uff1a\u7b80\u4ecb\u548c\u4f7f\u7528\u65b9\u6cd5<\/strong><\/p>\n<p><strong>\u4ec0\u4e48\u662f\u5b50\u67e5\u8be2\uff1f<\/strong><\/p>\n<p>\u5b50\u67e5\u8be2\u662f\u5d4c\u5957\u5728\u4e3b\u67e5\u8be2\u4e2d\u7684\u4e00\u4e2a\u72ec\u7acb\u67e5\u8be2\uff0c\u7528\u4e8e\u4e3a\u4e3b\u8981\u67e5\u8be2\u63d0\u4f9b\u6570\u636e\u3002\u5b83\u7c7b\u4f3c\u4e8e\u51fd\u6570\uff0c\u4f46\u53ef\u4ee5\u8fd4\u56de\u4e00\u4e2a\u6570\u636e\u96c6\u3002<\/p>\n<p><strong>\u5b50\u67e5\u8be2\u7684\u7c7b\u578b<\/strong><\/p>\n<p>Oracle \u652f\u6301\u4e24\u79cd\u7c7b\u578b\u7684\u5b50\u67e5\u8be2\uff1a<\/p>\n<ul>\n<li> <strong>\u76f8\u5173\u5b50\u67e5\u8be2\uff1a<\/strong>\u5f15\u7528\u4e3b\u67e5\u8be2\u4e2d\u7684\u5217\u3002<\/li>\n<li> <strong>\u975e\u76f8\u5173\u5b50\u67e5\u8be2\uff1a<\/strong>\u4e0d\u5f15\u7528\u4e3b\u67e5\u8be2\u4e2d\u7684\u5217\u3002<\/li>\n<\/ul>\n<p><strong>\u5b50\u67e5\u8be2\u7684\u8bed\u6cd5<\/strong><\/p>\n<p>\u5b50\u67e5\u8be2\u7684\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre>(\u5b50\u67e5\u8be2)<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5b50\u67e5\u8be2\u53ef\u4ee5\u653e\u5728\u4e3b\u67e5\u8be2\u7684\u5404\u79cd\u5b50\u53e5\u4e2d\uff0c\u4f8b\u5982 WHERE\u3001FROM \u548c HAVING\u3002<\/p>\n<p><strong>\u4f7f\u7528\u65b9\u6cd5<\/strong><\/p>\n<p>\u8981\u4f7f\u7528\u5b50\u67e5\u8be2\uff0c\u8bf7\u6309\u7167\u4ee5\u4e0b\u6b65\u9aa4\u64cd\u4f5c\uff1a<\/p>\n<ol>\n<li>\u786e\u5b9a\u9700\u8981\u4ece\u5b50\u67e5\u8be2\u83b7\u53d6\u7684\u6570\u636e\u3002<\/li>\n<li>\u7f16\u5199\u5b50\u67e5\u8be2\u4ee5\u8fd4\u56de\u6240\u9700\u7684\u6570\u636e\u3002<\/li>\n<li>\u5c06\u5b50\u67e5\u8be2\u5d4c\u5165\u5230\u4e3b\u67e5\u8be2\u7684\u9002\u5f53\u5b50\u53e5\u4e2d\u3002<\/li>\n<\/ol>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<p><strong>\u627e\u5230\u6240\u6709\u9500\u552e\u989d\u5927\u4e8e 1000 \u7f8e\u5143\u7684\u8ba2\u5355\uff1a<\/strong><\/p>\n<pre>SELECT order_id, customer_id, order_date, total_amount\nFROM orders\nWHERE total_amount &gt; (SELECT MAX(total_amount) FROM orders);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u5b50\u67e5\u8be2 (SELECT MAX(total_amount) FROM orders) \u8fd4\u56de\u8ba2\u5355\u4e2d\u7684\u6700\u5927\u603b\u91d1\u989d\uff0c\u7136\u540e\u5c06\u8be5\u503c\u4e0e\u4e3b\u67e5\u8be2\u4e2d\u7684 total_amount \u5217\u8fdb\u884c\u6bd4\u8f83\u3002<\/p>\n<p><strong>\u5b50\u67e5\u8be2\u7684\u4f18\u70b9<\/strong><\/p>\n<ul>\n<li>\u63d0\u9ad8\u67e5\u8be2\u7684\u6027\u80fd\uff0c\u907f\u514d\u591a\u6b21\u6267\u884c\u76f8\u540c\u67e5\u8be2\u3002<\/li>\n<li>\u7b80\u5316\u590d\u6742\u67e5\u8be2\uff0c\u4f7f\u5b83\u4eec\u66f4\u6613\u4e8e\u7406\u89e3\u548c\u7ef4\u62a4\u3002<\/li>\n<li>\u63d0\u4f9b\u4e00\u79cd\u7075\u6d3b\u7684\u65b9\u5f0f\u6765\u7b5b\u9009\u548c\u805a\u5408\u6570\u636e\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5b50\u67e5\u8be2\u600e\u4e48\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>\u5b50\u67e5\u8be2\u662f\u5d4c\u5957\u5728\u4e3b\u67e5\u8be2\u4e2d\u7684\u72ec\u7acb\u67e5\u8be2\uff0c\u7528\u4e8e\u63d0\u4f9b\u6570\u636e\u3002oracle\u652f\u6301\u76f8\u5173\u548c\u975e\u76f8\u5173\u5b50\u67e5\u8be2\uff0c\u8bed\u6cd5\u4e3a\uff1a(\u5b50\u67e5\u8be2)\u3002\u4f7f\u7528\u6b65\u9aa4\u5305\u62ec\uff1a\u786e\u5b9a\u6570\u636e\u9700\u6c42\u3001\u7f16\u5199\u5b50\u67e5\u8be2\u3001\u5d4c\u5165\u4e3b\u67e5\u8be2\u3002\u4f18\u70b9\u5305\u62ec\uff1a\u63d0\u9ad8\u6027\u80fd\u3001\u7b80\u5316\u67e5\u8be2\u3001\u63d0\u4f9b\u7b5b\u9009\u548c\u805a\u5408\u7075\u6d3b\u6027\u3002 Oracle \u5b50\u67e5\u8be2\uff1a\u7b80\u4ecb\u548c\u4f7f\u7528\u65b9\u6cd5 \u4ec0\u4e48\u662f\u5b50\u67e5\u8be2\uff1f \u5b50\u67e5\u8be2\u662f\u5d4c\u5957\u5728\u4e3b\u67e5\u8be2\u4e2d\u7684\u4e00\u4e2a\u72ec\u7acb\u67e5\u8be2\uff0c\u7528\u4e8e\u4e3a\u4e3b\u8981\u67e5\u8be2\u63d0\u4f9b\u6570\u636e\u3002\u5b83\u7c7b\u4f3c\u4e8e\u51fd\u6570\uff0c\u4f46\u53ef\u4ee5\u8fd4\u56de\u4e00\u4e2a\u6570\u636e\u96c6\u3002 \u5b50\u67e5\u8be2\u7684\u7c7b\u578b Oracle \u652f\u6301\u4e24\u79cd\u7c7b\u578b\u7684\u5b50\u67e5\u8be2\uff1a \u76f8\u5173\u5b50\u67e5\u8be2\uff1a\u5f15\u7528\u4e3b\u67e5\u8be2\u4e2d\u7684\u5217\u3002 \u975e\u76f8\u5173\u5b50\u67e5\u8be2\uff1a\u4e0d\u5f15\u7528\u4e3b\u67e5\u8be2\u4e2d\u7684\u5217\u3002 \u5b50\u67e5\u8be2\u7684\u8bed\u6cd5 \u5b50\u67e5\u8be2\u7684\u8bed\u6cd5\u5982\u4e0b\uff1a (\u5b50\u67e5\u8be2) \u767b\u5f55\u540e\u590d\u5236 \u5b50\u67e5\u8be2\u53ef\u4ee5\u653e\u5728\u4e3b\u67e5\u8be2\u7684\u5404\u79cd\u5b50\u53e5\u4e2d\uff0c\u4f8b\u5982 WHERE\u3001FROM \u548c HAVING\u3002 \u4f7f\u7528\u65b9\u6cd5 \u8981\u4f7f\u7528\u5b50\u67e5\u8be2\uff0c\u8bf7\u6309\u7167\u4ee5\u4e0b\u6b65\u9aa4\u64cd\u4f5c\uff1a \u786e\u5b9a\u9700\u8981\u4ece\u5b50\u67e5\u8be2\u83b7\u53d6\u7684\u6570\u636e\u3002 \u7f16\u5199\u5b50\u67e5\u8be2\u4ee5\u8fd4\u56de\u6240\u9700\u7684\u6570\u636e\u3002 \u5c06\u5b50\u67e5\u8be2\u5d4c\u5165\u5230\u4e3b\u67e5\u8be2\u7684\u9002\u5f53\u5b50\u53e5\u4e2d\u3002 \u793a\u4f8b\uff1a \u627e\u5230\u6240\u6709\u9500\u552e\u989d\u5927\u4e8e 1000 \u7f8e\u5143\u7684\u8ba2\u5355\uff1a SELECT order_id, customer_id, order_date, total_amount FROM orders WHERE total_amount &gt; (SELECT MAX(total_amount) FROM orders); \u767b\u5f55\u540e\u590d\u5236 \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u5b50\u67e5\u8be2 (SELECT MAX(total_amount) FROM orders) \u8fd4\u56de\u8ba2\u5355\u4e2d\u7684\u6700\u5927\u603b\u91d1\u989d\uff0c\u7136\u540e\u5c06\u8be5\u503c\u4e0e\u4e3b\u67e5\u8be2\u4e2d\u7684 total_amount \u5217\u8fdb\u884c\u6bd4\u8f83\u3002 \u5b50\u67e5\u8be2\u7684\u4f18\u70b9 \u63d0\u9ad8\u67e5\u8be2\u7684\u6027\u80fd\uff0c\u907f\u514d\u591a\u6b21\u6267\u884c\u76f8\u540c\u67e5\u8be2\u3002 \u7b80\u5316\u590d\u6742\u67e5\u8be2\uff0c\u4f7f\u5b83\u4eec\u66f4\u6613\u4e8e\u7406\u89e3\u548c\u7ef4\u62a4\u3002 \u63d0\u4f9b\u4e00\u79cd\u7075\u6d3b\u7684\u65b9\u5f0f\u6765\u7b5b\u9009\u548c\u805a\u5408\u6570\u636e\u3002 \u4ee5\u4e0a\u5c31\u662f\u5b50\u67e5\u8be2\u600e\u4e48\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-5004","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5004","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=5004"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5004\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5004"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5004"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5004"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}