{"id":3275,"date":"2020-01-28T22:16:54","date_gmt":"2020-01-28T21:16:54","guid":{"rendered":"http:\/\/van-maanen.com\/?p=3275"},"modified":"2020-01-28T22:16:54","modified_gmt":"2020-01-28T21:16:54","slug":"ranking-in-oracle","status":"publish","type":"post","link":"http:\/\/archief.van-maanen.com\/?p=3275","title":{"rendered":"Ranking in Oracle"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Oracle has 3 analytical functions to rank data. They provide approximately the same results, but with little deviations.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">First the code:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">select salary,\nrank() over (order by salary) rank,\n       dense_rank() over (order by salary) dense_rank,\n       row_number() over (order by salary) row_number\n       from hr.employees\n       order by salary;<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Inspecting the results shows the deviations. Look at the ties<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"http:\/\/van-maanen.com\/wp-content\/uploads\/2020\/01\/Capture-17-1-16-1-1.png\" alt=\"\" class=\"wp-image-3276\"\/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Oracle has 3 analytical functions to rank data. They provide approximately the same results, but with little deviations. First the code: select salary, rank() over (order by salary) rank, dense_rank() over (order by salary) dense_rank, row_number() over (order by salary) row_number from hr.employees order by salary; Inspecting the results shows the deviations. Look at the [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-3275","post","type-post","status-publish","format-standard","hentry","category-allgemein"],"_links":{"self":[{"href":"http:\/\/archief.van-maanen.com\/index.php?rest_route=\/wp\/v2\/posts\/3275","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/archief.van-maanen.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/archief.van-maanen.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/archief.van-maanen.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/archief.van-maanen.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3275"}],"version-history":[{"count":0,"href":"http:\/\/archief.van-maanen.com\/index.php?rest_route=\/wp\/v2\/posts\/3275\/revisions"}],"wp:attachment":[{"href":"http:\/\/archief.van-maanen.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3275"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/archief.van-maanen.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3275"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/archief.van-maanen.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3275"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}