{"id":94292,"date":"2024-10-19T19:04:59","date_gmt":"2024-10-19T11:04:59","guid":{"rendered":"https:\/\/server.hk\/cnblog\/94292\/"},"modified":"2024-10-19T19:05:00","modified_gmt":"2024-10-19T11:05:00","slug":"oracle-sql%e6%a2%9d%e4%bb%b6%e9%a0%86%e5%ba%8f%e5%b0%8d%e6%80%a7%e8%83%bd%e7%9a%84%e5%bd%b1%e9%9f%bf%e6%9c%89%e5%93%aa%e4%ba%9b%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/94292\/","title":{"rendered":"Oracle SQL\u689d\u4ef6\u9806\u5e8f\u5c0d\u6027\u80fd\u7684\u5f71\u97ff\u6709\u54ea\u4e9b\uff1f"},"content":{"rendered":"<h1 id=\"oracle-sql%e6%a2%9d%e4%bb%b6%e9%a0%86%e5%ba%8f%e5%b0%8d%e6%80%a7%e8%83%bd%e7%9a%84%e5%bd%b1%e9%9f%bf%e6%9c%89%e5%93%aa%e4%ba%9b%ef%bc%9f-AuuitLgizi\">Oracle SQL\u689d\u4ef6\u9806\u5e8f\u5c0d\u6027\u80fd\u7684\u5f71\u97ff\u6709\u54ea\u4e9b\uff1f<\/h1>\n<p>\u5728\u4f7f\u7528Oracle SQL\u9032\u884c\u6578\u64da\u67e5\u8a62\u6642\uff0c\u689d\u4ef6\u7684\u9806\u5e8f\u5c0d\u67e5\u8a62\u6027\u80fd\u6709\u8457\u91cd\u8981\u7684\u5f71\u97ff\u3002\u7406\u89e3\u9019\u4e00\u9ede\u5c0d\u65bc\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u548c\u958b\u767c\u8005\u4f86\u8aaa\u81f3\u95dc\u91cd\u8981\uff0c\u56e0\u70ba\u5b83\u53ef\u4ee5\u5e6b\u52a9\u4ed6\u5011\u512a\u5316\u67e5\u8a62\uff0c\u5f9e\u800c\u63d0\u9ad8\u6574\u9ad4\u7cfb\u7d71\u7684\u6548\u7387\u3002<\/p>\n<h2 id=\"%e6%9f%a5%e8%a9%a2%e5%9f%b7%e8%a1%8c%e8%a8%88%e5%8a%83%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-AuuitLgizi\">\u67e5\u8a62\u57f7\u884c\u8a08\u5283\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u5728Oracle\u4e2d\uff0c\u67e5\u8a62\u7684\u57f7\u884c\u8a08\u5283\u662f\u6307\u6578\u64da\u5eab\u5982\u4f55\u57f7\u884c\u4e00\u500bSQL\u67e5\u8a62\u7684\u5177\u9ad4\u6b65\u9a5f\u3002\u57f7\u884c\u8a08\u5283\u7684\u751f\u6210\u662f\u7531Oracle\u7684\u67e5\u8a62\u512a\u5316\u5668\u8ca0\u8cac\u7684\u3002\u512a\u5316\u5668\u6703\u6839\u64da\u591a\u7a2e\u56e0\u7d20\uff08\u5982\u7d71\u8a08\u4fe1\u606f\u3001\u7d22\u5f15\u3001\u689d\u4ef6\u9806\u5e8f\u7b49\uff09\u4f86\u6c7a\u5b9a\u6700\u6709\u6548\u7684\u57f7\u884c\u8def\u5f91\u3002<\/p>\n<h2 id=\"%e6%a2%9d%e4%bb%b6%e9%a0%86%e5%ba%8f%e7%9a%84%e5%bd%b1%e9%9f%bf-AuuitLgizi\">\u689d\u4ef6\u9806\u5e8f\u7684\u5f71\u97ff<\/h2>\n<p>\u5728SQL\u67e5\u8a62\u4e2d\uff0c\u689d\u4ef6\u7684\u9806\u5e8f\u53ef\u80fd\u6703\u5f71\u97ff\u67e5\u8a62\u7684\u57f7\u884c\u8a08\u5283\u3002\u4ee5\u4e0b\u662f\u5e7e\u500b\u4e3b\u8981\u65b9\u9762\uff1a<\/p>\n<ul>\n<li><strong>\u904e\u6ffe\u689d\u4ef6\u7684\u512a\u5148\u7d1a\uff1a<\/strong>\u7576\u67e5\u8a62\u4e2d\u5305\u542b\u591a\u500b\u904e\u6ffe\u689d\u4ef6\u6642\uff0c\u512a\u5316\u5668\u6703\u6839\u64da\u689d\u4ef6\u7684\u9078\u64c7\u6027\u4f86\u6c7a\u5b9a\u57f7\u884c\u7684\u9806\u5e8f\u3002\u9078\u64c7\u6027\u9ad8\u7684\u689d\u4ef6\uff08\u5373\u80fd\u5920\u6709\u6548\u904e\u6ffe\u5927\u91cf\u6578\u64da\u7684\u689d\u4ef6\uff09\u61c9\u8a72\u653e\u5728\u524d\u9762\uff0c\u4ee5\u6e1b\u5c11\u5f8c\u7e8c\u64cd\u4f5c\u7684\u6578\u64da\u91cf\u3002<\/li>\n<li><strong>\u7d22\u5f15\u7684\u4f7f\u7528\uff1a<\/strong>\u5982\u679c\u67d0\u500b\u689d\u4ef6\u4f7f\u7528\u4e86\u7d22\u5f15\uff0c\u5247\u5c07\u5176\u653e\u5728\u67e5\u8a62\u7684\u524d\u9762\u53ef\u4ee5\u63d0\u9ad8\u6027\u80fd\u3002\u7d22\u5f15\u80fd\u5920\u52a0\u901f\u6578\u64da\u7684\u6aa2\u7d22\uff0c\u5f9e\u800c\u6e1b\u5c11\u5168\u8868\u6383\u63cf\u7684\u9700\u8981\u3002<\/li>\n<li><strong>\u806f\u63a5\u9806\u5e8f\uff1a<\/strong>\u5728\u591a\u8868\u806f\u63a5\u7684\u60c5\u6cc1\u4e0b\uff0c\u8868\u7684\u806f\u63a5\u9806\u5e8f\u4e5f\u6703\u5f71\u97ff\u6027\u80fd\u3002\u901a\u5e38\uff0c\u61c9\u8a72\u5148\u806f\u63a5\u884c\u6578\u8f03\u5c11\u7684\u8868\uff0c\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u4e2d\u9593\u7d50\u679c\u96c6\u7684\u5927\u5c0f\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%af%a6%e9%9a%9b%e7%a4%ba%e4%be%8b-AuuitLgizi\">\u5be6\u969b\u793a\u4f8b<\/h2>\n<p>\u8003\u616e\u4ee5\u4e0b\u5169\u500b\u67e5\u8a62\uff1a<\/p>\n<pre><code>SELECT * FROM employees WHERE department_id = 10 AND salary &gt; 50000;<\/code><\/pre>\n<pre><code>SELECT * FROM employees WHERE salary &gt; 50000 AND department_id = 10;<\/code><\/pre>\n<p>\u96d6\u7136\u9019\u5169\u500b\u67e5\u8a62\u7684\u7d50\u679c\u662f\u76f8\u540c\u7684\uff0c\u4f46\u5b83\u5011\u7684\u57f7\u884c\u8a08\u5283\u53ef\u80fd\u6703\u6709\u6240\u4e0d\u540c\u3002\u5982\u679cdepartment_id\u7684\u9078\u64c7\u6027\u8f03\u9ad8\uff0c\u5247\u5c07\u5176\u653e\u5728\u524d\u9762\u53ef\u80fd\u6703\u66f4\u6709\u6548\u7387\u3002\u76f8\u53cd\uff0c\u5982\u679csalary\u7684\u9078\u64c7\u6027\u8f03\u9ad8\uff0c\u5247\u61c9\u5c07\u5176\u653e\u5728\u524d\u9762\u3002<\/p>\n<h2 id=\"%e5%a6%82%e4%bd%95%e5%84%aa%e5%8c%96%e6%a2%9d%e4%bb%b6%e9%a0%86%e5%ba%8f-AuuitLgizi\">\u5982\u4f55\u512a\u5316\u689d\u4ef6\u9806\u5e8f<\/h2>\n<p>\u70ba\u4e86\u512a\u5316SQL\u67e5\u8a62\u7684\u6027\u80fd\uff0c\u53ef\u4ee5\u8003\u616e\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n<ul>\n<li><strong>\u5206\u6790\u57f7\u884c\u8a08\u5283\uff1a<\/strong>\u4f7f\u7528EXPLAIN PLAN\u547d\u4ee4\u4f86\u67e5\u770b\u67e5\u8a62\u7684\u57f7\u884c\u8a08\u5283\uff0c\u4e26\u6839\u64da\u8a08\u5283\u8abf\u6574\u689d\u4ef6\u7684\u9806\u5e8f\u3002<\/li>\n<li><strong>\u66f4\u65b0\u7d71\u8a08\u4fe1\u606f\uff1a<\/strong>\u78ba\u4fdd\u6578\u64da\u5eab\u4e2d\u7684\u7d71\u8a08\u4fe1\u606f\u662f\u6700\u65b0\u7684\uff0c\u9019\u6a23\u512a\u5316\u5668\u624d\u80fd\u505a\u51fa\u6b63\u78ba\u7684\u6c7a\u7b56\u3002<\/li>\n<li><strong>\u6e2c\u8a66\u4e0d\u540c\u7684\u689d\u4ef6\u9806\u5e8f\uff1a<\/strong>\u5728\u958b\u767c\u74b0\u5883\u4e2d\u6e2c\u8a66\u4e0d\u540c\u7684\u689d\u4ef6\u9806\u5e8f\uff0c\u89c0\u5bdf\u6027\u80fd\u8b8a\u5316\uff0c\u9078\u64c7\u6700\u4f73\u65b9\u6848\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-AuuitLgizi\">\u7d50\u8ad6<\/h2>\n<p>Oracle SQL\u4e2d\u7684\u689d\u4ef6\u9806\u5e8f\u5c0d\u67e5\u8a62\u6027\u80fd\u6709\u8457\u986f\u8457\u7684\u5f71\u97ff\u3002\u901a\u904e\u5408\u7406\u5b89\u6392\u689d\u4ef6\u7684\u9806\u5e8f\uff0c\u53ef\u4ee5\u6709\u6548\u63d0\u9ad8\u67e5\u8a62\u7684\u6548\u7387\uff0c\u6e1b\u5c11\u8cc7\u6e90\u7684\u6d88\u8017\u3002\u4e86\u89e3\u57f7\u884c\u8a08\u5283\u3001\u9078\u64c7\u6027\u548c\u7d22\u5f15\u7684\u4f7f\u7528\u662f\u512a\u5316\u67e5\u8a62\u7684\u95dc\u9375\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u61c9\u7528\uff0c\u9019\u4e9b\u77e5\u8b58\u5c24\u70ba\u91cd\u8981\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc\u65bc<code><a href=\"https:\/\/server.hk\">VPS<\/a><\/code>\u548c<code><a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a><\/code>\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3Oracle SQL\u4e2d\u689d\u4ef6\u9806\u5e8f\u5c0d\u67e5\u8a62\u6027\u80fd\u7684\u5f71\u97ff\uff0c\u512a\u5316\u67e5\u8a62\u6548\u7387\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u901f\u5ea6\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-94292","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/94292","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=94292"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/94292\/revisions"}],"predecessor-version":[{"id":94293,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/94292\/revisions\/94293"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=94292"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=94292"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=94292"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}