{"id":142857,"date":"2024-10-31T23:15:21","date_gmt":"2024-10-31T15:15:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/142857\/"},"modified":"2024-10-31T23:15:21","modified_gmt":"2024-10-31T15:15:21","slug":"sql-server-%e9%8c%af%e8%aa%a4-15661-sp_estimate_data_compression_savings-%e5%ad%98%e5%84%b2%e9%81%8e%e7%a8%8b%e4%b8%8d%e8%83%bd%e7%94%a8%e6%96%bc%e8%87%a8%e6%99%82%e8%a1%a8%e3%80%82%e6%95%85%e9%9a%9c","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/142857\/","title":{"rendered":"SQL Server \u932f\u8aa4 15661 sp_estimate_data_compression_savings \u5b58\u5132\u904e\u7a0b\u4e0d\u80fd\u7528\u65bc\u81e8\u6642\u8868\u3002\u6545\u969c\u8655\u7406\u4fee\u5fa9\u652f\u6301\u9060\u7a0b"},"content":{"rendered":"<h1 id=\"sql-server-%e9%8c%af%e8%aa%a4-15661%ef%bc%9asp_estimate_data_compression_savings-%e5%ad%98%e5%84%b2%e9%81%8e%e7%a8%8b%e4%b8%8d%e8%83%bd%e7%94%a8%e6%96%bc%e8%87%a8%e6%99%82%e8%a1%a8-SMygnEuKDu\">SQL Server \u932f\u8aa4 15661\uff1asp_estimate_data_compression_savings \u5b58\u5132\u904e\u7a0b\u4e0d\u80fd\u7528\u65bc\u81e8\u6642\u8868<\/h1>\n<p>\u5728\u4f7f\u7528 SQL Server \u9032\u884c\u6578\u64da\u5eab\u7ba1\u7406\u6642\uff0c\u958b\u767c\u8005\u548c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u7d93\u5e38\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\u548c\u6311\u6230\u3002\u5176\u4e2d\uff0c\u932f\u8aa4 15661 \u662f\u4e00\u500b\u76f8\u5c0d\u5e38\u898b\u7684\u554f\u984c\uff0c\u7279\u5225\u662f\u5728\u4f7f\u7528 <code>sp_estimate_data_compression_savings<\/code> \u5b58\u5132\u904e\u7a0b\u6642\u3002\u9019\u7bc7\u6587\u7ae0\u5c07\u6df1\u5165\u63a2\u8a0e\u9019\u500b\u932f\u8aa4\u7684\u539f\u56e0\u3001\u5f71\u97ff\u4ee5\u53ca\u53ef\u80fd\u7684\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a4-15661-%e7%9a%84%e8%83%8c%e6%99%af-SMygnEuKDu\">\u932f\u8aa4 15661 \u7684\u80cc\u666f<\/h2>\n<p>SQL Server \u7684 <code>sp_estimate_data_compression_savings<\/code> \u5b58\u5132\u904e\u7a0b\u7528\u65bc\u4f30\u7b97\u6578\u64da\u58d3\u7e2e\u7684\u6f5b\u5728\u7bc0\u7701\u3002\u9019\u500b\u904e\u7a0b\u901a\u5e38\u7528\u65bc\u8868\u6216\u7d22\u5f15\uff0c\u4ee5\u5e6b\u52a9\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u6c7a\u5b9a\u662f\u5426\u61c9\u8a72\u5be6\u65bd\u6578\u64da\u58d3\u7e2e\u3002\u7136\u800c\uff0c\u7576\u5617\u8a66\u5728\u81e8\u6642\u8868\u4e0a\u4f7f\u7528\u6b64\u5b58\u5132\u904e\u7a0b\u6642\uff0c\u6703\u51fa\u73fe\u932f\u8aa4 15661\uff0c\u63d0\u793a\u300c\u5b58\u5132\u904e\u7a0b\u4e0d\u80fd\u7528\u65bc\u81e8\u6642\u8868\u300d\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a4%e5%8e%9f%e5%9b%a0%e5%88%86%e6%9e%90-SMygnEuKDu\">\u932f\u8aa4\u539f\u56e0\u5206\u6790<\/h2>\n<p>\u9019\u500b\u932f\u8aa4\u7684\u6839\u672c\u539f\u56e0\u5728\u65bc SQL Server \u7684\u8a2d\u8a08\u9650\u5236\u3002<code>sp_estimate_data_compression_savings<\/code> \u5b58\u5132\u904e\u7a0b\u4e0d\u652f\u6301\u81e8\u6642\u8868\uff0c\u56e0\u70ba\u81e8\u6642\u8868\u7684\u7d50\u69cb\u548c\u751f\u547d\u9031\u671f\u8207\u5e38\u898f\u8868\u4e0d\u540c\u3002\u81e8\u6642\u8868\u901a\u5e38\u5728\u6703\u8a71\u7d50\u675f\u6642\u81ea\u52d5\u522a\u9664\uff0c\u9019\u4f7f\u5f97 SQL Server \u7121\u6cd5\u5728\u9019\u4e9b\u8868\u4e0a\u9032\u884c\u6301\u4e45\u7684\u58d3\u7e2e\u4f30\u7b97\u3002<\/p>\n<h3 id=\"%e8%87%a8%e6%99%82%e8%a1%a8%e7%9a%84%e7%89%b9%e6%80%a7-SMygnEuKDu\">\u81e8\u6642\u8868\u7684\u7279\u6027<\/h3>\n<ul>\n<li>\u81e8\u6642\u8868\u7684\u751f\u547d\u9031\u671f\uff1a\u81e8\u6642\u8868\u5728\u5275\u5efa\u5f8c\u50c5\u5728\u7576\u524d\u6703\u8a71\u4e2d\u5b58\u5728\uff0c\u6703\u8a71\u7d50\u675f\u5f8c\u81ea\u52d5\u522a\u9664\u3002<\/li>\n<li>\u81e8\u6642\u8868\u7684\u547d\u540d\uff1a\u81e8\u6642\u8868\u4ee5 # \u958b\u982d\uff0c\u4e26\u4e14\u53ef\u4ee5\u662f\u5168\u5c40\u6216\u672c\u5730\u7684\u3002<\/li>\n<li>\u81e8\u6642\u8868\u7684\u5b58\u5132\u4f4d\u7f6e\uff1a\u81e8\u6642\u8868\u5b58\u5132\u5728 tempdb \u6578\u64da\u5eab\u4e2d\uff0c\u9019\u4f7f\u5f97\u5176\u6027\u80fd\u548c\u7ba1\u7406\u65b9\u5f0f\u8207\u5e38\u898f\u8868\u6709\u6240\u4e0d\u540c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88%e8%88%87%e6%95%85%e9%9a%9c%e6%8e%92%e9%99%a4-SMygnEuKDu\">\u89e3\u6c7a\u65b9\u6848\u8207\u6545\u969c\u6392\u9664<\/h2>\n<p>\u96d6\u7136 <code>sp_estimate_data_compression_savings<\/code> \u4e0d\u80fd\u76f4\u63a5\u7528\u65bc\u81e8\u6642\u8868\uff0c\u4f46\u6709\u5e7e\u7a2e\u65b9\u6cd5\u53ef\u4ee5\u7e5e\u904e\u9019\u500b\u9650\u5236\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8%e5%b8%b8%e8%a6%8f%e8%a1%a8-SMygnEuKDu\">1. \u4f7f\u7528\u5e38\u898f\u8868<\/h3>\n<p>\u5982\u679c\u9700\u8981\u9032\u884c\u6578\u64da\u58d3\u7e2e\u4f30\u7b97\uff0c\u5efa\u8b70\u5c07\u81e8\u6642\u8868\u7684\u6578\u64da\u63d2\u5165\u5230\u4e00\u500b\u5e38\u898f\u8868\u4e2d\uff0c\u7136\u5f8c\u5728\u8a72\u8868\u4e0a\u904b\u884c <code>sp_estimate_data_compression_savings<\/code>\u3002\u9019\u6a23\u53ef\u4ee5\u7372\u5f97\u6e96\u78ba\u7684\u58d3\u7e2e\u4f30\u7b97\u3002<\/p>\n<pre><code>-- \u5275\u5efa\u4e00\u500b\u5e38\u898f\u8868\nCREATE TABLE dbo.MyRegularTable (\n    ID INT PRIMARY KEY,\n    Data NVARCHAR(100)\n);\n\n-- \u5c07\u81e8\u6642\u8868\u7684\u6578\u64da\u63d2\u5165\u5e38\u898f\u8868\nINSERT INTO dbo.MyRegularTable (ID, Data)\nSELECT ID, Data FROM #MyTempTable;\n\n-- \u57f7\u884c\u58d3\u7e2e\u4f30\u7b97\nEXEC sp_estimate_data_compression_savings \n    @schema_name = 'dbo', \n    @object_name = 'MyRegularTable', \n    @index_id = NULL, \n    @partition_number = NULL;\n<\/code><\/pre>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8-sql-server-management-studio-ssms-SMygnEuKDu\">2. \u4f7f\u7528 SQL Server Management Studio (SSMS)<\/h3>\n<p>\u5728 SQL Server Management Studio \u4e2d\uff0c\u53ef\u4ee5\u901a\u904e\u5716\u5f62\u754c\u9762\u4f86\u4f30\u7b97\u6578\u64da\u58d3\u7e2e\u3002\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u76f4\u63a5\u4f7f\u7528\u5b58\u5132\u904e\u7a0b\uff0c\u4e26\u4e14\u53ef\u4ee5\u66f4\u76f4\u89c0\u5730\u67e5\u770b\u7d50\u679c\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-SMygnEuKDu\">\u7d50\u8ad6<\/h2>\n<p>\u932f\u8aa4 15661 \u662f SQL Server \u4e2d\u4e00\u500b\u5e38\u898b\u7684\u554f\u984c\uff0c\u7279\u5225\u662f\u5728\u4f7f\u7528 <code>sp_estimate_data_compression_savings<\/code> \u5b58\u5132\u904e\u7a0b\u6642\u3002\u4e86\u89e3\u9019\u500b\u932f\u8aa4\u7684\u539f\u56e0\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\u5c0d\u65bc\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u4f86\u8aaa\u81f3\u95dc\u91cd\u8981\u3002\u901a\u904e\u4f7f\u7528\u5e38\u898f\u8868\u6216\u5229\u7528 SQL Server Management Studio\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u5730\u7e5e\u904e\u9019\u4e00\u9650\u5236\uff0c\u9032\u884c\u6578\u64da\u58d3\u7e2e\u7684\u4f30\u7b97\u3002<\/p>\n<p>\u5982\u9700\u9032\u4e00\u6b65\u4e86\u89e3\u6709\u95dc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u548c\u5176\u4ed6\u6578\u64da\u5eab\u7ba1\u7406\u89e3\u6c7a\u65b9\u6848\u7684\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3 SQL Server \u932f\u8aa4 15661\uff0c\u5982\u4f55\u8655\u7406 sp_estimate_data_compression_savings \u5b58\u5132\u904e\u7a0b\u5728\u81e8\u6642\u8868\u4e2d\u7684\u9650\u5236\u53ca\u6545\u969c\u4fee\u5fa9\u652f\u6301\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-142857","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/142857","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=142857"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/142857\/revisions"}],"predecessor-version":[{"id":142858,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/142857\/revisions\/142858"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=142857"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=142857"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=142857"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}