{"id":2183,"date":"2017-01-17T19:26:29","date_gmt":"2017-01-17T17:26:29","guid":{"rendered":"http:\/\/soci.hu\/blog\/?p=2183"},"modified":"2017-01-17T19:26:29","modified_gmt":"2017-01-17T17:26:29","slug":"nagy-tablak-join-olasa-eredmenyek","status":"publish","type":"post","link":"https:\/\/soci.hu\/blog\/index.php\/2017\/01\/17\/nagy-tablak-join-olasa-eredmenyek\/","title":{"rendered":"Nagy t\u00e1bl\u00e1k join-ol\u00e1sa eredm\u00e9nyek"},"content":{"rendered":"<p>Kor\u00e1bbi <a href=\"http:\/\/soci.hu\/blog\/index.php\/2016\/11\/22\/nagy-tablak-joinolasa\/\">bejegyz\u00e9semben<\/a> \u00edrtam, hogy dem\u00f3 k\u00f6rnyezetben a columnstore indexek nagyon jelent\u0151s gyorsul\u00e1st okoznak.<\/p>\n<p>\u00c9l\u0151 adatb\u00e1zisban azt tapasztaltuk, hogy integer kulcsokon v\u00e9gzett join-okon 5-10-szeres gyorsul\u00e1st okozott a norm\u00e1l indexekhez k\u00e9pest.<\/p>\n<p>Azonban GUID-os oszlopokkal nem okozott \u00e9rt\u00e9kelhet\u0151 gyorsul\u00e1st, annak ellen\u00e9re, hogy batch m\u00f3d\u00faak voltak a m\u0171veletek. Erre \u00fagy l\u00e1tszik nem gy\u00fartak m\u00e9g r\u00e1, vagy a guid randoms\u00e1ga miatt nem tud \u00e9rdelmes teljes\u00edtm\u00e9nyt el\u00e9rni.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Kor\u00e1bbi bejegyz\u00e9semben \u00edrtam, hogy dem\u00f3 k\u00f6rnyezetben a columnstore indexek nagyon jelent\u0151s gyorsul\u00e1st okoznak. \u00c9l\u0151 adatb\u00e1zisban azt tapasztaltuk, hogy integer kulcsokon v\u00e9gzett join-okon&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,4,30,95],"tags":[],"class_list":["post-2183","post","type-post","status-publish","format-standard","hentry","category-adatbazisok","category-szakmai-elet","category-sql-server","category-sql-server-2016"],"_links":{"self":[{"href":"https:\/\/soci.hu\/blog\/index.php\/wp-json\/wp\/v2\/posts\/2183","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/soci.hu\/blog\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/soci.hu\/blog\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/soci.hu\/blog\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/soci.hu\/blog\/index.php\/wp-json\/wp\/v2\/comments?post=2183"}],"version-history":[{"count":1,"href":"https:\/\/soci.hu\/blog\/index.php\/wp-json\/wp\/v2\/posts\/2183\/revisions"}],"predecessor-version":[{"id":2184,"href":"https:\/\/soci.hu\/blog\/index.php\/wp-json\/wp\/v2\/posts\/2183\/revisions\/2184"}],"wp:attachment":[{"href":"https:\/\/soci.hu\/blog\/index.php\/wp-json\/wp\/v2\/media?parent=2183"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/soci.hu\/blog\/index.php\/wp-json\/wp\/v2\/categories?post=2183"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/soci.hu\/blog\/index.php\/wp-json\/wp\/v2\/tags?post=2183"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}