{"id":138443,"date":"2024-10-31T14:31:19","date_gmt":"2024-10-31T06:31:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/138443\/"},"modified":"2024-10-31T14:31:20","modified_gmt":"2024-10-31T06:31:20","slug":"sql-server%e6%9f%a5%e8%a9%a2%e9%80%9f%e5%ba%a6%e6%85%a2%e7%9a%84%e5%8e%9f%e5%9b%a0","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/138443\/","title":{"rendered":"SQL Server\u67e5\u8a62\u901f\u5ea6\u6162\u7684\u539f\u56e0"},"content":{"rendered":"

SQL Server\u67e5\u8a62\u901f\u5ea6\u6162\u7684\u539f\u56e0<\/h1>\n

\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0cSQL Server\u4f5c\u70ba\u4e00\u7a2e\u6d41\u884c\u7684\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u696d\u52d9\u548c\u61c9\u7528\u7a0b\u5e8f\u4e2d\u3002\u7136\u800c\uff0c\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\u548c\u67e5\u8a62\u9700\u6c42\u7684\u589e\u52a0\uff0c\u8a31\u591a\u7528\u6236\u6703\u767c\u73feSQL Server\u7684\u67e5\u8a62\u901f\u5ea6\u8b8a\u5f97\u7de9\u6162\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5c0e\u81f4SQL Server\u67e5\u8a62\u901f\u5ea6\u6162\u7684\u5e7e\u500b\u4e3b\u8981\u539f\u56e0\uff0c\u4e26\u63d0\u4f9b\u76f8\u61c9\u7684\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n

1. \u4e0d\u826f\u7684\u67e5\u8a62\u8a2d\u8a08<\/h2>\n

\u67e5\u8a62\u7684\u8a2d\u8a08\u5c0d\u6027\u80fd\u6709\u8457\u76f4\u63a5\u7684\u5f71\u97ff\u3002\u8907\u96dc\u7684\u67e5\u8a62\u3001\u904e\u591a\u7684\u806f\u63a5\u3001\u4ee5\u53ca\u4e0d\u5fc5\u8981\u7684\u5b50\u67e5\u8a62\u90fd\u53ef\u80fd\u5c0e\u81f4\u67e5\u8a62\u901f\u5ea6\u8b8a\u6162\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u67e5\u8a62\u53ef\u80fd\u6703\u56e0\u70ba\u4e0d\u5fc5\u8981\u7684\u806f\u63a5\u800c\u8b8a\u5f97\u7de9\u6162\uff1a<\/p>\n

SELECT a.*, b.*\nFROM TableA a\nJOIN TableB b ON a.id = b.a_id\nWHERE a.status = 'active';\n<\/code><\/pre>\n
\u5728\u9019\u7a2e\u60c5\u6cc1\u4e0b\uff0c\u512a\u5316\u67e5\u8a62\u7d50\u69cb\uff0c\u6e1b\u5c11\u4e0d\u5fc5\u8981\u7684\u806f\u63a5\uff0c\u6216\u4f7f\u7528\u7d22\u5f15\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n
2. \u7f3a\u4e4f\u7d22\u5f15<\/h2>\n
\u7d22\u5f15\u662f\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u7684\u95dc\u9375\u5de5\u5177\u3002\u7f3a\u4e4f\u9069\u7576\u7684\u7d22\u5f15\u6703\u5c0e\u81f4SQL Server\u5728\u67e5\u8a62\u6642\u9032\u884c\u5168\u8868\u6383\u63cf\uff0c\u9019\u6703\u5927\u5e45\u964d\u4f4e\u67e5\u8a62\u901f\u5ea6\u3002\u70ba\u4e86\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u61c9\u6839\u64da\u67e5\u8a62\u7684\u7279\u9ede\u5275\u5efa\u5408\u9069\u7684\u7d22\u5f15\u3002\u4f8b\u5982\uff1a<\/p>\n
CREATE INDEX idx_status ON TableA(status);\n<\/code><\/pre>\n
\u9019\u6a23\u53ef\u4ee5\u52a0\u901f\u57fa\u65bc\u72c0\u614b\u7684\u67e5\u8a62\u3002<\/p>\n
3. \u9396\u5b9a\u548c\u963b\u585e<\/h2>\n
\u5728\u591a\u7528\u6236\u74b0\u5883\u4e2d\uff0c\u9396\u5b9a\u548c\u963b\u585e\u662f\u5f71\u97ff\u67e5\u8a62\u6027\u80fd\u7684\u5e38\u898b\u554f\u984c\u3002\u7576\u4e00\u500b\u67e5\u8a62\u6b63\u5728\u57f7\u884c\u6642\uff0c\u5176\u4ed6\u67e5\u8a62\u53ef\u80fd\u6703\u88ab\u963b\u585e\uff0c\u5c0e\u81f4\u6574\u9ad4\u6027\u80fd\u4e0b\u964d\u3002\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\u53ef\u4ee5\u6aa2\u67e5\u7576\u524d\u7684\u9396\u5b9a\u60c5\u6cc1\uff1a<\/p>\n
SELECT * FROM sys.dm_tran_locks;\n<\/code><\/pre>\n
\u70ba\u4e86\u6e1b\u5c11\u9396\u5b9a\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u66f4\u7d30\u7c92\u5ea6\u7684\u9396\u5b9a\u7b56\u7565\u6216\u8abf\u6574\u4e8b\u52d9\u7684\u9694\u96e2\u7d1a\u5225\u3002<\/p>\n
4. \u786c\u9ad4\u8cc7\u6e90\u4e0d\u8db3<\/h2>\n
SQL Server\u7684\u6027\u80fd\u4e5f\u53d7\u5230\u786c\u9ad4\u8cc7\u6e90\u7684\u5f71\u97ff\u3002\u5982\u679c\u4f3a\u670d\u5668\u7684CPU\u3001\u5167\u5b58\u6216\u78c1\u789fI\/O\u8cc7\u6e90\u4e0d\u8db3\uff0c\u5c07\u6703\u5c0e\u81f4\u67e5\u8a62\u901f\u5ea6\u8b8a\u6162\u3002\u76e3\u63a7\u4f3a\u670d\u5668\u7684\u6027\u80fd\u6307\u6a19\uff0c\u4e26\u6839\u64da\u9700\u8981\u5347\u7d1a\u786c\u9ad4\u8cc7\u6e90\u662f\u5fc5\u8981\u7684\u3002\u4f8b\u5982\uff0c\u589e\u52a0\u5167\u5b58\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u7684\u7de9\u5b58\u80fd\u529b\uff0c\u5f9e\u800c\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n
5. \u6578\u64da\u5eab\u8a2d\u8a08\u4e0d\u7576<\/h2>\n
\u6578\u64da\u5eab\u7684\u8a2d\u8a08\u5c0d\u6027\u80fd\u6709\u8457\u6df1\u9060\u7684\u5f71\u97ff\u3002\u6b63\u898f\u5316\u904e\u5ea6\u6216\u4e0d\u7576\u7684\u6578\u64da\u7d50\u69cb\u53ef\u80fd\u6703\u5c0e\u81f4\u67e5\u8a62\u6548\u7387\u4f4e\u4e0b\u3002\u5408\u7406\u7684\u6578\u64da\u5eab\u8a2d\u8a08\u61c9\u8a72\u5e73\u8861\u6b63\u898f\u5316\u548c\u53cd\u6b63\u898f\u5316\uff0c\u4ee5\u4fbf\u5728\u4fdd\u6301\u6578\u64da\u5b8c\u6574\u6027\u7684\u540c\u6642\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/p>\n
6. \u66f4\u65b0\u7d71\u8a08\u4fe1\u606f<\/h2>\n
SQL Server\u4f7f\u7528\u7d71\u8a08\u4fe1\u606f\u4f86\u751f\u6210\u67e5\u8a62\u8a08\u5283\u3002\u5982\u679c\u7d71\u8a08\u4fe1\u606f\u904e\u6642\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u4e0d\u4f73\u7684\u67e5\u8a62\u8a08\u5283\uff0c\u5f9e\u800c\u5f71\u97ff\u6027\u80fd\u3002\u5b9a\u671f\u66f4\u65b0\u7d71\u8a08\u4fe1\u606f\u53ef\u4ee5\u5e6b\u52a9SQL Server\u751f\u6210\u66f4\u6709\u6548\u7684\u67e5\u8a62\u8a08\u5283\uff1a<\/p>\n
UPDATE STATISTICS TableA;\n<\/code><\/pre>\n
\u7e3d\u7d50<\/h2>\n
SQL Server\u67e5\u8a62\u901f\u5ea6\u6162\u7684\u539f\u56e0\u591a\u7a2e\u591a\u6a23\uff0c\u5305\u62ec\u4e0d\u826f\u7684\u67e5\u8a62\u8a2d\u8a08\u3001\u7f3a\u4e4f\u7d22\u5f15\u3001\u9396\u5b9a\u548c\u963b\u585e\u3001\u786c\u9ad4\u8cc7\u6e90\u4e0d\u8db3\u3001\u6578\u64da\u5eab\u8a2d\u8a08\u4e0d\u7576\u4ee5\u53ca\u904e\u6642\u7684\u7d71\u8a08\u4fe1\u606f\u3002\u901a\u904e\u91dd\u5c0d\u9019\u4e9b\u554f\u984c\u9032\u884c\u5206\u6790\u548c\u512a\u5316\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002\u82e5\u60a8\u9700\u8981\u66f4\u9ad8\u6548\u7684\u6578\u64da\u8655\u7406\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528\u9999\u6e2fVPS<\/a>\u6216\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u4f86\u652f\u6301\u60a8\u7684\u696d\u52d9\u9700\u6c42\uff0c\u78ba\u4fdd\u60a8\u7684SQL Server\u904b\u884c\u6d41\u66a2\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e86\u89e3SQL Server\u67e5\u8a62\u901f\u5ea6\u6162\u7684\u539f\u56e0\uff0c\u5305\u62ec\u7d22\u5f15\u7f3a\u5931\u3001\u67e5\u8a62\u512a\u5316\u3001\u8cc7\u6e90\u7af6\u722d\u53ca\u6578\u64da\u5eab\u8a2d\u8a08\u7b49\u56e0\u7d20\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-138443","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/138443","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=138443"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/138443\/revisions"}],"predecessor-version":[{"id":138444,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/138443\/revisions\/138444"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=138443"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=138443"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=138443"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}