{"id":140776,"date":"2024-10-31T20:59:09","date_gmt":"2024-10-31T12:59:09","guid":{"rendered":"https:\/\/server.hk\/cnblog\/140776\/"},"modified":"2024-10-31T20:59:09","modified_gmt":"2024-10-31T12:59:09","slug":"sql-server-%e6%80%a7%e8%83%bd%e8%aa%bf%e5%84%aa%e4%b9%8b%e5%9f%b7%e8%a1%8c%e8%a8%88%e5%8a%83%e7%ac%ac%e4%b8%80%e6%ac%a1%e5%af%a6%e8%b8%90","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/140776\/","title":{"rendered":"SQL Server \u6027\u80fd\u8abf\u512a\u4e4b\u57f7\u884c\u8a08\u5283\u7b2c\u4e00\u6b21\u5be6\u8e10"},"content":{"rendered":"<h1 id=\"sql-server-%e6%80%a7%e8%83%bd%e8%aa%bf%e5%84%aa%e4%b9%8b%e5%9f%b7%e8%a1%8c%e8%a8%88%e5%8a%83%e7%ac%ac%e4%b8%80%e6%ac%a1%e5%af%a6%e8%b8%90-oiDNTPGcji\">SQL Server \u6027\u80fd\u8abf\u512a\u4e4b\u57f7\u884c\u8a08\u5283\u7b2c\u4e00\u6b21\u5be6\u8e10<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0cSQL Server \u4f5c\u70ba\u4e00\u500b\u5f37\u5927\u7684\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u696d\u52d9\u5834\u666f\u3002\u6027\u80fd\u8abf\u512a\u662f\u78ba\u4fdd SQL Server \u9ad8\u6548\u904b\u884c\u7684\u95dc\u9375\uff0c\u800c\u57f7\u884c\u8a08\u5283\u5247\u662f\u6027\u80fd\u8abf\u512a\u7684\u91cd\u8981\u5de5\u5177\u4e4b\u4e00\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u9032\u884c SQL Server \u7684\u57f7\u884c\u8a08\u5283\u5206\u6790\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u8e10\u5efa\u8b70\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%9f%b7%e8%a1%8c%e8%a8%88%e5%8a%83%ef%bc%9f-oiDNTPGcji\">\u4ec0\u9ebc\u662f\u57f7\u884c\u8a08\u5283\uff1f<\/h2>\n<p>\u57f7\u884c\u8a08\u5283\u662f SQL Server \u5728\u57f7\u884c\u67e5\u8a62\u6642\u6240\u63a1\u7528\u7684\u6b65\u9a5f\u548c\u7b56\u7565\u7684\u8a73\u7d30\u63cf\u8ff0\u3002\u5b83\u986f\u793a\u4e86 SQL Server \u5982\u4f55\u8a2a\u554f\u6578\u64da\uff0c\u5305\u62ec\u4f7f\u7528\u7684\u7d22\u5f15\u3001\u806f\u63a5\u985e\u578b\u3001\u904e\u6ffe\u689d\u4ef6\u7b49\u3002\u901a\u904e\u5206\u6790\u57f7\u884c\u8a08\u5283\uff0c\u958b\u767c\u4eba\u54e1\u548c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u53ef\u4ee5\u8b58\u5225\u6027\u80fd\u74f6\u9838\uff0c\u4e26\u9032\u884c\u76f8\u61c9\u7684\u512a\u5316\u3002<\/p>\n<h2 id=\"%e5%a6%82%e4%bd%95%e7%8d%b2%e5%8f%96%e5%9f%b7%e8%a1%8c%e8%a8%88%e5%8a%83-oiDNTPGcji\">\u5982\u4f55\u7372\u53d6\u57f7\u884c\u8a08\u5283<\/h2>\n<p>\u5728 SQL Server \u4e2d\uff0c\u6709\u5e7e\u7a2e\u65b9\u6cd5\u53ef\u4ee5\u7372\u53d6\u57f7\u884c\u8a08\u5283\uff1a<\/p>\n<ul>\n<li><strong>\u5be6\u6642\u57f7\u884c\u8a08\u5283\uff1a<\/strong>\u5728 SQL Server Management Studio (SSMS) \u4e2d\uff0c\u53ef\u4ee5\u901a\u904e\u9ede\u64ca\u201c\u986f\u793a\u5be6\u969b\u57f7\u884c\u8a08\u5283\u201d\u6309\u9215\u4f86\u7372\u53d6\u67e5\u8a62\u7684\u5be6\u6642\u57f7\u884c\u8a08\u5283\u3002<\/li>\n<li><strong>\u5b58\u5132\u7684\u57f7\u884c\u8a08\u5283\uff1a<\/strong>\u4f7f\u7528 T-SQL \u67e5\u8a62\u8a9e\u53e5\uff0c\u53ef\u4ee5\u7372\u53d6\u5df2\u7d93\u57f7\u884c\u904e\u7684\u67e5\u8a62\u7684\u57f7\u884c\u8a08\u5283\u3002\u4f8b\u5982\uff0c\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/li>\n<\/ul>\n<pre><code>SELECT * FROM sys.dm_exec_query_stats\nCROSS APPLY sys.dm_exec_sql_text(sql_handle) AS sql_text\nCROSS APPLY sys.dm_exec_query_plan(plan_handle);<\/code><\/pre>\n<h2 id=\"%e5%88%86%e6%9e%90%e5%9f%b7%e8%a1%8c%e8%a8%88%e5%8a%83-oiDNTPGcji\">\u5206\u6790\u57f7\u884c\u8a08\u5283<\/h2>\n<p>\u7372\u53d6\u57f7\u884c\u8a08\u5283\u5f8c\uff0c\u63a5\u4e0b\u4f86\u7684\u6b65\u9a5f\u662f\u5206\u6790\u5b83\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u95dc\u9375\u6307\u6a19\u548c\u5143\u7d20\uff1a<\/p>\n<ul>\n<li><strong>\u6210\u672c\uff1a<\/strong>\u57f7\u884c\u8a08\u5283\u4e2d\u7684\u6bcf\u500b\u64cd\u4f5c\u90fd\u6709\u4e00\u500b\u6210\u672c\u503c\uff0c\u9019\u8868\u793a\u8a72\u64cd\u4f5c\u5728\u6574\u500b\u67e5\u8a62\u4e2d\u7684\u76f8\u5c0d\u958b\u92b7\u3002\u9ad8\u6210\u672c\u7684\u64cd\u4f5c\u901a\u5e38\u662f\u6027\u80fd\u74f6\u9838\u7684\u4f86\u6e90\u3002<\/li>\n<li><strong>\u7d22\u5f15\u4f7f\u7528\u60c5\u6cc1\uff1a<\/strong>\u6aa2\u67e5\u57f7\u884c\u8a08\u5283\u4e2d\u662f\u5426\u4f7f\u7528\u4e86\u9069\u7576\u7684\u7d22\u5f15\u3002\u5982\u679c\u67d0\u500b\u67e5\u8a62\u672a\u80fd\u4f7f\u7528\u7d22\u5f15\uff0c\u5247\u53ef\u80fd\u9700\u8981\u5275\u5efa\u6216\u8abf\u6574\u7d22\u5f15\u3002<\/li>\n<li><strong>\u806f\u63a5\u985e\u578b\uff1a<\/strong>\u4e0d\u540c\u7684\u806f\u63a5\u985e\u578b\uff08\u5982 Nested Loops\u3001Hash Join\u3001Merge Join\uff09\u5c0d\u6027\u80fd\u7684\u5f71\u97ff\u4e0d\u540c\u3002\u6839\u64da\u6578\u64da\u91cf\u548c\u67e5\u8a62\u7684\u7279\u6027\uff0c\u9078\u64c7\u5408\u9069\u7684\u806f\u63a5\u985e\u578b\u81f3\u95dc\u91cd\u8981\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%84%aa%e5%8c%96%e5%bb%ba%e8%ad%b0-oiDNTPGcji\">\u512a\u5316\u5efa\u8b70<\/h2>\n<p>\u5728\u5206\u6790\u57f7\u884c\u8a08\u5283\u5f8c\uff0c\u53ef\u4ee5\u8003\u616e\u4ee5\u4e0b\u512a\u5316\u5efa\u8b70\uff1a<\/p>\n<ul>\n<li><strong>\u5275\u5efa\u6216\u8abf\u6574\u7d22\u5f15\uff1a<\/strong>\u6839\u64da\u67e5\u8a62\u7684\u9700\u6c42\uff0c\u5275\u5efa\u5408\u9069\u7684\u7d22\u5f15\uff0c\u6216\u8abf\u6574\u73fe\u6709\u7d22\u5f15\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/li>\n<li><strong>\u91cd\u5beb\u67e5\u8a62\uff1a<\/strong>\u6709\u6642\u5019\uff0c\u7c21\u55ae\u5730\u91cd\u5beb\u67e5\u8a62\u8a9e\u53e5\u53ef\u4ee5\u986f\u8457\u6539\u5584\u6027\u80fd\u3002\u4f8b\u5982\uff0c\u907f\u514d\u4f7f\u7528 SELECT *\uff0c\u800c\u662f\u9078\u64c7\u5fc5\u8981\u7684\u5217\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\u6709\u52a9\u65bc SQL Server \u66f4\u597d\u5730\u9078\u64c7\u57f7\u884c\u8a08\u5283\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-oiDNTPGcji\">\u7d50\u8ad6<\/h2>\n<p>\u57f7\u884c\u8a08\u5283\u662f SQL Server \u6027\u80fd\u8abf\u512a\u7684\u91cd\u8981\u5de5\u5177\uff0c\u901a\u904e\u6709\u6548\u7684\u5206\u6790\u548c\u512a\u5316\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002\u638c\u63e1\u57f7\u884c\u8a08\u5283\u7684\u4f7f\u7528\u548c\u5206\u6790\u6280\u5de7\uff0c\u5c0d\u65bc\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u548c\u958b\u767c\u4eba\u54e1\u4f86\u8aaa\u90fd\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u6280\u80fd\u3002\u82e5\u60a8\u9700\u8981\u9032\u4e00\u6b65\u7684\u652f\u6301\u6216\u89e3\u6c7a\u65b9\u6848\uff0c\u8acb\u8003\u616e\u4f7f\u7528 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u670d\u52d9\uff0c\u4ee5\u7372\u5f97\u66f4\u9ad8\u6548\u7684\u6578\u64da\u5eab\u904b\u884c\u74b0\u5883\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22SQL Server\u6027\u80fd\u8abf\u512a\u7684\u57f7\u884c\u8a08\u5283\uff0c\u5b78\u7fd2\u5982\u4f55\u5206\u6790\u548c\u512a\u5316\u67e5\u8a62\u4ee5\u63d0\u5347\u6578\u64da\u5eab\u6548\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-140776","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/140776","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=140776"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/140776\/revisions"}],"predecessor-version":[{"id":140777,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/140776\/revisions\/140777"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=140776"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=140776"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=140776"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}