{"id":15372,"date":"2023-12-04T19:40:41","date_gmt":"2023-12-04T11:40:41","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=15372"},"modified":"2023-12-04T19:41:50","modified_gmt":"2023-12-04T11:41:50","slug":"oracle-zhong-ru-he-sheng-cheng-zhi-xing-ji-hua-exp","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/04\/oracle-zhong-ru-he-sheng-cheng-zhi-xing-ji-hua-exp\/","title":{"rendered":"Oracle \u4e2d\u5982\u4f55\u751f\u6210\u6267\u884c\u8ba1\u5212(Explain Plan)\uff1f"},"content":{"rendered":"<p>\u5728 Oracle \u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u751f\u6210\u6267\u884c\u8ba1\u5212\uff08Explain Plan\uff09\uff1a<\/p>\n<h3>\u4f7f\u7528 SQL Developer \u6216\u7c7b\u4f3c\u5de5\u5177\uff1a<\/h3>\n<ol>\n<li><strong>SQL Developer\uff1a<\/strong> \u5982\u679c\u4f60\u6b63\u5728\u4f7f\u7528 Oracle \u7684 SQL Developer \u5de5\u5177\uff0c\u53ef\u4ee5\u5728\u67e5\u8be2\u7a97\u53e3\u4e2d\u7f16\u5199 SQL \u67e5\u8be2\uff0c\u7136\u540e\u70b9\u51fb\u5de5\u5177\u680f\u4e0a\u7684 &#8220;Explain Plan&#8221; \u6309\u94ae\u6765\u751f\u6210\u6267\u884c\u8ba1\u5212\u3002<\/li>\n<\/ol>\n<h3>\u4f7f\u7528 SQL \u547d\u4ee4\uff1a<\/h3>\n<ol>\n<li><strong>\u4f7f\u7528 Explain Plan \u547d\u4ee4\uff1a<\/strong> \u5728 SQL \u67e5\u8be2\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>EXPLAIN PLAN<\/code> \u547d\u4ee4\u6765\u751f\u6210\u6267\u884c\u8ba1\u5212\u3002\u4f8b\u5982\uff1a\n<pre><code class=\"language-sql  line-numbers\">EXPLAIN PLAN FOR\nSELECT * FROM your_table WHERE your_condition;\n<\/code><\/pre>\n<\/li>\n<li><strong>\u663e\u793a\u6267\u884c\u8ba1\u5212\uff1a<\/strong> \u751f\u6210\u6267\u884c\u8ba1\u5212\u540e\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u6765\u663e\u793a\u6267\u884c\u8ba1\u5212\uff1a\n<pre><code class=\"language-sql  line-numbers\">SELECT * FROM TABLE(DBMS_XPLAN.DISPLAY);\n<\/code><\/pre>\n<p>\u6216\u8005<\/p>\n<pre><code class=\"language-sql  line-numbers\">SELECT * FROM TABLE(DBMS_XPLAN.DISPLAY('PLAN_TABLE', 'your_format'));\n<\/code><\/pre>\n<p>\u8fd9\u4e9b\u547d\u4ee4\u5c06\u6267\u884c\u8ba1\u5212\u663e\u793a\u5728\u67e5\u8be2\u7ed3\u679c\u4e2d\uff0c\u4f60\u53ef\u4ee5\u6839\u636e\u9700\u8981\u9009\u62e9\u5408\u9002\u7684\u663e\u793a\u683c\u5f0f\u3002<\/p>\n<\/li>\n<\/ol>\n<p>\u6ce8\u610f\uff1a\u4e3a\u4e86\u4f7f\u7528 <code>EXPLAIN PLAN<\/code> \u547d\u4ee4\uff0c\u6570\u636e\u5e93\u7528\u6237\u9700\u8981\u5177\u6709\u76f8\u5e94\u7684\u6743\u9650\u3002\u6b64\u5916\uff0c\u6267\u884c\u8ba1\u5212\u4f1a\u88ab\u5b58\u50a8\u5728\u6570\u636e\u5e93\u7684 <code>PLAN_TABLE<\/code> \u6216\u5176\u4ed6\u6307\u5b9a\u7684\u8868\u4e2d\uff0c\u6240\u4ee5\u786e\u4fdd\u6709\u6743\u9650\u8bbf\u95ee\u8fd9\u4e9b\u8868\u6216\u6307\u5b9a\u4e86\u6b63\u786e\u7684\u8868\u540d\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 Oracle \u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u751f\u6210\u6267\u884c\u8ba1\u5212\uff08Explain Plan\uff09\uff1a \u4f7f\u7528 SQL Develop [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[120],"tags":[],"class_list":["post-15372","post","type-post","status-publish","format-standard","hentry","category-oracel"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15372","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=15372"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15372\/revisions"}],"predecessor-version":[{"id":15373,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15372\/revisions\/15373"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=15372"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=15372"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=15372"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}