{"id":2126,"date":"2012-05-13T11:50:54","date_gmt":"2012-05-13T11:50:54","guid":{"rendered":"http:\/\/enjoyasp.net\/?p=2126"},"modified":"2012-05-13T11:50:54","modified_gmt":"2012-05-13T11:50:54","slug":"%e6%89%ab%e6%8f%8f%e4%b8%80%e5%ae%9a%e6%af%94%e6%9f%a5%e6%89%be%e6%85%a2%e5%90%97","status":"publish","type":"post","link":"https:\/\/enjoyasp.net\/index.php\/2012\/05\/13\/%e6%89%ab%e6%8f%8f%e4%b8%80%e5%ae%9a%e6%af%94%e6%9f%a5%e6%89%be%e6%85%a2%e5%90%97\/","title":{"rendered":"\u626b\u63cf\u4e00\u5b9a\u6bd4\u67e5\u627e\u6162\u5417"},"content":{"rendered":"<p>1,<br \/>\n&nbsp;&nbsp;SCAN&nbsp;&nbsp;&nbsp;Seek<br \/>\n\u5806&nbsp;&nbsp;Table Scan&nbsp;&nbsp;\u65e0<br \/>\n\u805a\u96c6\u7d22\u5f15&nbsp;Clustered Index Scan&nbsp;Clustered Index Seek<br \/>\n\u975e\u805a\u96c6\u7d22\u5f15&nbsp;Index Scan&nbsp;&nbsp;Index Seek<br \/>\n\u975e\u805a\u96c6\u7d22\u5f15\u626b\u63cf\u4ea7\u751f\u7684\u539f\u56e0\uff1a\u56e0Index\u53ea\u5305\u542b\u4e86\u8868\u7684\u4e00\u5c0f\u90e8\u5206\u5b57\u6bb5\uff0c\u5360\u7528\u7684\u9875\u9762\u6570\u91cf\u4f1a\u6bd4\u8868\u683c\u672c\u8eab\u8981\u5c0f\u5f97\u591a\uff0c\u6545\u626b\u63cf\u7d22\u5f15\u8868\u5c31\u6bd4\u805a\u96c6\u7d22\u5f15\u626b\u63cf\u8981\u9ad8\u5f97\u591a\u3002<br \/>\n\u524d\u63d0\u662f\u7d22\u5f15\u4e2d\u5305\u542b\u4e86\u6240\u8981\u6c42\u7684\u5b57\u6bb5\uff0c\u4f46\u4e3a\u4ec0\u4e48\u6ca1\u7528\u7d22\u5f15\u67e5\u627e\u5462\uff0c\u53ef\u80fd\u662f\u5728\u6b64\u5b57\u6bb5\u4e0a\u8fd0\u884c\u4e86\u8fd0\u7b97\uff0c\u6216\u6b64\u5b57\u6bb5\u662f\u8054\u5408\u7d22\u5f15\u7684\u975e\u9996\u9879\u3002<br \/>\n2\uff0c\u626b\u63cf\u4e00\u5b9a\u6bd4\u67e5\u627e\u6162\u5417\uff1f\u4e0d\u4e00\u5b9a<br \/>\n\u6784\u9020\u573a\u666f\uff1a\u8ba2\u5355\u660e\u7ec6\u8868\uff0c DetailID\u805a\u96c6\u7d22\u5f15\uff0cOrderID\u975e\u805a\u96c6\u7d22\u5f15\u3002\u8fd4\u56de\u4ea7\u54c1\uff0c\u64cd\u4f5c\u4eba\u3002<br \/>\n\u5229\u7528OrderID\u8fc7\u6ee4\uff0c\u90a3\u4e48\u6b63\u5e38\u6d41\u7a0b\u662f\u5148\u901a\u8fc7OrderID\u975e\u805a\u96c6\u7d22\u5f15\u67e5\u627e\u6ee1\u8db3\u6761\u4ef6\u7684\u5b57\u6bb5\uff0c\u56e0\u8981\u8fd4\u56de\u4ea7\u54c1\uff0c\u64cd\u4f5c\u4eba\u7b49\u4fe1\u606f\u6545<br \/>\n\u8981\u901a\u8fc7lookup\u67e5\u5230\u805a\u96c6\u7d22\u5f15\u4e0a\u7684\u4ea7\u54c1\uff0c\u64cd\u4f5c\u4eba\u3002\u6ce8\u610f\u8fd9\u91cc\u9762\u6709\u4e00\u4e2alookup.\u73b0\u5728\u5047\u8bbe\u540c\u4e00\u4e2aOrderID\u5bf9\u5e94\u7684\u660e\u7ec6\u975e\u5e38\u591a\uff0c\u90a3\u4e48\u5728<br \/>\nlookup\u9636\u6bb5\u8981\u82b1\u8d39\u5927\u91cf\u7684\u65f6\u95f4\uff0c\u5927\u5927\u8d85\u8fc7\u5728OrderID\u67e5\u627e\u5e26\u6765\u7684\u6027\u80fd\u63d0\u5347\uff0c\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u8fd8\u4e0d\u5982\u76f4\u63a5\u6765\u4e2a\u805a\u96c6\u7d22\u5f15\u626b\u63cf\u5feb\u4e00\u4e9b\u3002<br \/>\n\u6545\u5728\u5b9e\u9645\u4e2d\uff0c\u4f1a\u53d1\u73b0\u5e94\u7528\u975e\u805a\u96c6\u7d22\u5f15\u67e5\u627e\u7684\u5730\u65b9\u6362\u6210\u4e86\u805a\u96c6\u7d22\u5f15\u626b\u63cf\uff0c\u56e0\u4e3a\u6b64\u79cd\u60c5\u51b5\u4e0b\uff0c\u626b\u63cf\u6765\u5f97\u8fd8\u5feb\u4e00\u4e9b\uff0c\u5373\u975e\u805a\u96c6\u7d22\u5f15\u5b58\u5728\u5e76\u4e0d\u4e00\u5b9a\u4f7f\u7528\uff0c<br \/>\n\u82e5\u51fa\u73b0\u8fd9\u79cd\u60c5\u51b5\uff0c\u8bf7\u68c0\u67e5\u975e\u805a\u96c6\u7d22\u5f15\u662f\u5426\u6709\u5927\u91cf\u91cd\u590d\uff0c\u770b\u80fd\u5426\u6d88\u9664\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>1, &nbsp;&nbsp;SCAN&nbsp;&nbsp;&nbsp;Seek \u5806&nbsp;&nbsp; [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[36],"tags":[],"class_list":["post-2126","post","type-post","status-publish","format-standard","hentry","category-sql-server"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/posts\/2126","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/comments?post=2126"}],"version-history":[{"count":0,"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/posts\/2126\/revisions"}],"wp:attachment":[{"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/media?parent=2126"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/categories?post=2126"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/tags?post=2126"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}