{"id":197712,"date":"2024-11-14T10:05:26","date_gmt":"2024-11-14T02:05:26","guid":{"rendered":"https:\/\/server.hk\/cnblog\/197712\/"},"modified":"2024-11-14T10:05:27","modified_gmt":"2024-11-14T02:05:27","slug":"%e5%88%a9%e7%94%a8with%e8%aa%9e%e5%8f%a5%e6%8f%90%e9%ab%98oracle%e6%9f%a5%e8%a9%a2%e6%95%88%e7%8e%87","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/197712\/","title":{"rendered":"\u5229\u7528with\u8a9e\u53e5\u63d0\u9ad8Oracle\u67e5\u8a62\u6548\u7387"},"content":{"rendered":"<h1 id=\"%e5%88%a9%e7%94%a8with%e8%aa%9e%e5%8f%a5%e6%8f%90%e9%ab%98oracle%e6%9f%a5%e8%a9%a2%e6%95%88%e7%8e%87-RyHgFSOiga\">\u5229\u7528WITH\u8a9e\u53e5\u63d0\u9ad8Oracle\u67e5\u8a62\u6548\u7387<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u67e5\u8a62\u6548\u7387\u662f\u5f71\u97ff\u7cfb\u7d71\u6027\u80fd\u7684\u95dc\u9375\u56e0\u7d20\u4e4b\u4e00\u3002Oracle\u6578\u64da\u5eab\u63d0\u4f9b\u4e86\u591a\u7a2e\u512a\u5316\u67e5\u8a62\u7684\u65b9\u5f0f\uff0c\u5176\u4e2d\u4f7f\u7528WITH\u8a9e\u53e5\uff08\u4e5f\u7a31\u70ba\u516c\u7528\u8868\u8868\u9054\u5f0f\uff0cCTE\uff09\u662f\u4e00\u7a2e\u6709\u6548\u7684\u6280\u8853\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5229\u7528WITH\u8a9e\u53e5\u4f86\u63d0\u9ad8Oracle\u67e5\u8a62\u7684\u6548\u7387\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u6700\u4f73\u5be6\u8e10\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afwith%e8%aa%9e%e5%8f%a5%ef%bc%9f-RyHgFSOiga\">\u4ec0\u9ebc\u662fWITH\u8a9e\u53e5\uff1f<\/h2>\n<p>WITH\u8a9e\u53e5\u5141\u8a31\u7528\u6236\u5728\u67e5\u8a62\u4e2d\u5b9a\u7fa9\u4e00\u500b\u6216\u591a\u500b\u516c\u7528\u8868\u8868\u9054\u5f0f\uff0c\u9019\u4e9b\u8868\u9054\u5f0f\u53ef\u4ee5\u5728\u5f8c\u7e8c\u7684\u67e5\u8a62\u4e2d\u91cd\u8907\u4f7f\u7528\u3002\u9019\u6a23\u4e0d\u50c5\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u7684\u53ef\u8b80\u6027\uff0c\u9084\u80fd\u6e1b\u5c11\u91cd\u8907\u8a08\u7b97\u7684\u958b\u92b7\u3002<\/p>\n<h2 id=\"with%e8%aa%9e%e5%8f%a5%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-RyHgFSOiga\">WITH\u8a9e\u53e5\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<pre><code>\nWITH cte_name AS (\n    SELECT column1, column2\n    FROM table_name\n    WHERE condition\n)\nSELECT *\nFROM cte_name;\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0ccte_name\u662f\u516c\u7528\u8868\u8868\u9054\u5f0f\u7684\u540d\u7a31\uff0c\u5305\u542b\u4e86\u4e00\u500bSELECT\u67e5\u8a62\u3002\u96a8\u5f8c\u7684SELECT\u67e5\u8a62\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u9019\u500bCTE\uff0c\u5f9e\u800c\u907f\u514d\u91cd\u8907\u7de8\u5beb\u76f8\u540c\u7684\u67e5\u8a62\u908f\u8f2f\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8with%e8%aa%9e%e5%8f%a5%e7%9a%84%e5%84%aa%e5%8b%a2-RyHgFSOiga\">\u4f7f\u7528WITH\u8a9e\u53e5\u7684\u512a\u52e2<\/h2>\n<ul>\n<li><strong>\u63d0\u9ad8\u53ef\u8b80\u6027\uff1a<\/strong>\u4f7f\u7528WITH\u8a9e\u53e5\u53ef\u4ee5\u5c07\u8907\u96dc\u7684\u67e5\u8a62\u5206\u89e3\u70ba\u66f4\u5c0f\u7684\u90e8\u5206\uff0c\u4f7f\u5f97\u6574\u9ad4\u67e5\u8a62\u7d50\u69cb\u66f4\u52a0\u6e05\u6670\u3002<\/li>\n<li><strong>\u6e1b\u5c11\u91cd\u8907\u8a08\u7b97\uff1a<\/strong>\u7576\u4e00\u500b\u67e5\u8a62\u9700\u8981\u591a\u6b21\u4f7f\u7528\u76f8\u540c\u7684\u5b50\u67e5\u8a62\u6642\uff0c\u4f7f\u7528WITH\u8a9e\u53e5\u53ef\u4ee5\u907f\u514d\u91cd\u8907\u8a08\u7b97\uff0c\u5f9e\u800c\u63d0\u9ad8\u6027\u80fd\u3002<\/li>\n<li><strong>\u652f\u6301\u905e\u6b78\u67e5\u8a62\uff1a<\/strong>WITH\u8a9e\u53e5\u9084\u652f\u6301\u905e\u6b78\u67e5\u8a62\uff0c\u9019\u5c0d\u65bc\u8655\u7406\u5c64\u6b21\u7d50\u69cb\u6578\u64da\uff08\u5982\u7d44\u7e54\u7d50\u69cb\u6216\u7522\u54c1\u5206\u985e\uff09\u975e\u5e38\u6709\u7528\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e4%bd%bf%e7%94%a8with%e8%aa%9e%e5%8f%a5%e9%80%b2%e8%a1%8c%e6%9f%a5%e8%a9%a2%e5%84%aa%e5%8c%96-RyHgFSOiga\">\u793a\u4f8b\uff1a\u4f7f\u7528WITH\u8a9e\u53e5\u9032\u884c\u67e5\u8a62\u512a\u5316<\/h2>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70baemployees\u7684\u8868\uff0c\u5305\u542b\u54e1\u5de5\u7684\u57fa\u672c\u4fe1\u606f\uff0c\u5305\u62ec\u90e8\u9580\u548c\u85aa\u8cc7\u3002\u6211\u5011\u5e0c\u671b\u67e5\u8a62\u6bcf\u500b\u90e8\u9580\u7684\u5e73\u5747\u85aa\u8cc7\uff0c\u4e26\u627e\u51fa\u85aa\u8cc7\u9ad8\u65bc\u5e73\u5747\u503c\u7684\u54e1\u5de5\u3002<\/p>\n<pre><code>\nWITH avg_salary AS (\n    SELECT department_id, AVG(salary) AS avg_sal\n    FROM employees\n    GROUP BY department_id\n)\nSELECT e.employee_id, e.first_name, e.last_name, e.salary\nFROM employees e\nJOIN avg_salary a ON e.department_id = a.department_id\nWHERE e.salary &gt; a.avg_sal;\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u9996\u5148\u4f7f\u7528WITH\u8a9e\u53e5\u8a08\u7b97\u6bcf\u500b\u90e8\u9580\u7684\u5e73\u5747\u85aa\u8cc7\uff0c\u7136\u5f8c\u5728\u4e3b\u67e5\u8a62\u4e2d\u4f7f\u7528\u9019\u500b\u7d50\u679c\u4f86\u7be9\u9078\u51fa\u85aa\u8cc7\u9ad8\u65bc\u5e73\u5747\u503c\u7684\u54e1\u5de5\u3002\u9019\u6a23\u7684\u505a\u6cd5\u4e0d\u50c5\u63d0\u9ad8\u4e86\u67e5\u8a62\u7684\u6548\u7387\uff0c\u9084\u4f7f\u5f97\u67e5\u8a62\u7684\u908f\u8f2f\u66f4\u52a0\u6e05\u6670\u3002<\/p>\n<h2 id=\"%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90-RyHgFSOiga\">\u6700\u4f73\u5be6\u8e10<\/h2>\n<ul>\n<li>\u5728\u4f7f\u7528WITH\u8a9e\u53e5\u6642\uff0c\u61c9\u8a72\u8003\u616eCTE\u7684\u8a08\u7b97\u6210\u672c\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u3002<\/li>\n<li>\u907f\u514d\u5728CTE\u4e2d\u4f7f\u7528\u904e\u65bc\u8907\u96dc\u7684\u67e5\u8a62\uff0c\u9019\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u3002<\/li>\n<li>\u5c0d\u65bc\u9700\u8981\u591a\u6b21\u4f7f\u7528\u7684\u67e5\u8a62\uff0c\u4f7f\u7528WITH\u8a9e\u53e5\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u6027\u80fd\uff0c\u4f46\u5c0d\u65bc\u4e00\u6b21\u6027\u67e5\u8a62\uff0c\u5247\u4e0d\u4e00\u5b9a\u9700\u8981\u4f7f\u7528\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-RyHgFSOiga\">\u7e3d\u7d50<\/h2>\n<p>\u5229\u7528WITH\u8a9e\u53e5\u53ef\u4ee5\u6709\u6548\u63d0\u9ad8Oracle\u67e5\u8a62\u7684\u6548\u7387\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u8907\u96dc\u67e5\u8a62\u548c\u91cd\u8907\u8a08\u7b97\u6642\u3002\u901a\u904e\u5408\u7406\u4f7f\u7528\u516c\u7528\u8868\u8868\u9054\u5f0f\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u63d0\u5347\u67e5\u8a62\u7684\u53ef\u8b80\u6027\u548c\u6027\u80fd\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u61c9\u7528\u5834\u666f\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u5982<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\uff0c\u5c07\u6709\u52a9\u65bc\u9032\u4e00\u6b65\u512a\u5316\u6574\u9ad4\u7cfb\u7d71\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u5229\u7528WITH\u8a9e\u53e5\u63d0\u5347Oracle\u67e5\u8a62\u6548\u7387\uff0c\u512a\u5316\u6578\u64da\u6aa2\u7d22\uff0c\u7c21\u5316\u8907\u96dc\u67e5\u8a62\uff0c\u63d0\u5347\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-197712","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/197712","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=197712"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/197712\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=197712"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=197712"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=197712"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}