{"id":1063,"date":"2017-03-10T11:48:44","date_gmt":"2017-03-10T06:18:44","guid":{"rendered":"http:\/\/pramodsingla.com\/?p=1063"},"modified":"2017-03-10T11:48:44","modified_gmt":"2017-03-10T06:18:44","slug":"sql-server-tuning-find-duplicate-stats","status":"publish","type":"post","link":"https:\/\/pramodsingla.com\/?p=1063","title":{"rendered":"SQL Server Tuning – Find Duplicate Stats"},"content":{"rendered":"

Problem Statement: <\/strong>Script to find\u00a0the duplicate stats.
\nSolution:<\/strong>\u00a0SQL server allows to create duplicate statistics but having duplicate statistics are overkill to system.Use following script to find the duplicate statistics.<\/h2>\n

;<\/i><\/span>WITH<\/span>\u00a0all_stats<\/span>
\nAS<\/span>\u00a0(<\/span>SELECT<\/span>\u00a0s<\/span>.<\/span>object_id<\/span>,<\/span>
\ns<\/span>.<\/span>NAME<\/span>\u00a0AS<\/span>\u00a0stats_name<\/span>,<\/span>
\ns<\/span>.<\/span>stats_id<\/span>,<\/span>
\ns<\/span>.<\/span>has_filter<\/span>,<\/span>
\ns<\/span>.<\/span>auto_created<\/span>,<\/span>
\nsc<\/span>.<\/span>stats_column_id<\/span>,<\/span>
\nsc<\/span>.<\/span>column_id<\/span>,<\/span>
\nc<\/span>.<\/span>NAME<\/span>\u00a0AS<\/span>\u00a0column_name<\/span>
\nFROM<\/span>\u00a0\u00a0\u00a0sys<\/span>.<\/span>stats<\/span>\u00a0AS<\/span>\u00a0s<\/span>
\nINNER<\/span>\u00a0JOIN<\/span>\u00a0sys<\/span>.<\/span>stats_columns<\/span>\u00a0AS<\/span>\u00a0sc<\/span>
\nON<\/span>\u00a0s<\/span>.<\/span>stats_id<\/span>\u00a0=<\/span>\u00a0sc<\/span>.<\/span>stats_id<\/span>
\nAND<\/span>\u00a0s<\/span>.<\/span>object_id<\/span>\u00a0=<\/span>\u00a0sc<\/span>.<\/span>object_id<\/span>
\nAND<\/span>\u00a0sc<\/span>.<\/span>stats_column_id<\/span>\u00a0=<\/span>\u00a01<\/span>
\nINNER<\/span>\u00a0JOIN<\/span>\u00a0sys<\/span>.<\/span>columns<\/span>\u00a0AS<\/span>\u00a0c<\/span>
\nON<\/span>\u00a0c<\/span>.<\/span>object_id<\/span>\u00a0=<\/span>\u00a0s<\/span>.<\/span>object_id<\/span>
\nAND<\/span>\u00a0c<\/span>.<\/span>object_id<\/span>\u00a0=<\/span>\u00a0sc<\/span>.<\/span>object_id<\/span>
\nAND<\/span>\u00a0c<\/span>.<\/span>column_id<\/span>\u00a0=<\/span>\u00a0sc<\/span>.<\/span>column_id<\/span>
\nWHERE<\/span>\u00a0\u00a0objectproperty<\/b><\/span>(<\/span>s<\/span>.<\/span>object_id<\/span>,<\/span>\u00a0‘IsUserTable’<\/span>)<\/span>\u00a0=<\/span>\u00a01<\/span>)<\/span>
\nSELECT<\/span>\u00a0row_number<\/b><\/span>(<\/span>)<\/span>
\nOVER<\/span>(<\/span>
\npartition<\/span>\u00a0BY<\/span>\u00a0s1<\/span>.<\/span>object_id<\/span>,<\/span>\u00a0s1<\/span>.<\/span>column_name<\/span>
\nORDER<\/span>\u00a0BY<\/span>\u00a0s1<\/span>.<\/span>column_name<\/span>)<\/span>\u00a0AS<\/span>\u00a0stats_no<\/span>,<\/span>
\nObject_name<\/i><\/span>(<\/span>s1<\/span>.<\/span>object_id<\/span>)<\/span>\u00a0\u00a0\u00a0\u00a0AS<\/span>\u00a0table_name<\/span>,<\/span>
\ns1<\/span>.<\/span>stats_name<\/span>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0AS<\/span>\u00a0stats_name<\/span>,<\/span>
\ns2<\/span>.<\/span>stats_name<\/span>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0AS<\/span>\u00a0identical_stats_name<\/span>,<\/span>
\ns2<\/span>.<\/span>column_name<\/span>
\nFROM<\/span>\u00a0\u00a0\u00a0all_stats<\/span>\u00a0AS<\/span>\u00a0s1<\/span>
\nINNER<\/span>\u00a0JOIN<\/span>\u00a0all_stats<\/span>\u00a0AS<\/span>\u00a0s2<\/span>
\nON<\/span>\u00a0s1<\/span>.<\/span>object_id<\/span>\u00a0=<\/span>\u00a0s2<\/span>.<\/span>object_id<\/span>
\nAND<\/span>\u00a0s1<\/span>.<\/span>stats_id<\/span>\u00a0!=<\/span>\u00a0s2<\/span>.<\/span>stats_id<\/span>
\nAND<\/span>\u00a0s1<\/span>.<\/span>stats_column_id<\/span>\u00a0=<\/span>\u00a0s2<\/span>.<\/span>stats_column_id<\/span>
\nAND<\/span>\u00a0s1<\/span>.<\/span>column_id<\/span>\u00a0=<\/span>\u00a0s2<\/span>.<\/span>column_id<\/span>
\nAND<\/span>\u00a0s1<\/span>.<\/span>has_filter<\/span>\u00a0=<\/span>\u00a0s2<\/span>.<\/span>has_filter<\/span>
\nAND<\/span>\u00a0s1<\/span>.<\/span>auto_created<\/span>\u00a0!=<\/span>\u00a0s2<\/span>.<\/span>auto_created<\/span><\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"

Problem Statement: Script to find\u00a0the duplicate stats. Solution:\u00a0SQL server allows to create duplicate statistics but having duplicate statistics are overkill[…]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0},"categories":[23,29],"tags":[75,76],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/pramodsingla.com\/index.php?rest_route=\/wp\/v2\/posts\/1063"}],"collection":[{"href":"https:\/\/pramodsingla.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/pramodsingla.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/pramodsingla.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/pramodsingla.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1063"}],"version-history":[{"count":0,"href":"https:\/\/pramodsingla.com\/index.php?rest_route=\/wp\/v2\/posts\/1063\/revisions"}],"wp:attachment":[{"href":"https:\/\/pramodsingla.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1063"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pramodsingla.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1063"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pramodsingla.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1063"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}